Review Update Lenovo ThinkPad X121e (AMD E-300) Notebook
In September 2011, we reviewed the Lenovo ThinkPad X121e featuring an AMD E-350 CPU. In this review, we consider a variant of the X121e that features the AMD E-300 APU, 4 GB RAM, a 320 GB hard drive, and the FreeDOS operating system. Lenovo IdeaPad G575L Charger This particular variant is in most aspects similar to the X121e already reviewed and, as a result, we will limit our review to highlighting the differences of this variant. Information regarding the features and input devices can be found in the original review.
Both the AMD E-450 APU and an Intel CPU are available for slightly more than our test system with its entry model configuration and the optional Windows 7 that we selected. Lenovo IdeaPad G575M Charger As a result, we will consider both the performance-to-price ratio and feasibility of this notebook in
the course of our review.
As with the previous X121e, the case shows weaknesses in several keys areas such as the touchpad and battery. Users have reported that the casing lifts slightly around the upper part of the display frame and around the wrist rest. While the middle of the display lid has rubber standoffs on the display frame that allow for a good fit, those for the edges of the display are not thick enough to fill the gap when the unit is closed. Lenovo G470 Charger This does not cause any real issues but can lead to dirt and grime on the display during frequent use. This defect is unlikely to cause serious harm to the display in regular use, but the display is more susceptible to damage if pressure is applied to the display lid directly. This is something that should be avoided in all notebooks, however.
Lenovo G470A Charger The display in our sample unit is identical to that of the previously reviewed X121e – an 11.6-inch LED-backlit 1366x768 (WXGA) display. Lenovo's datasheet confirms that the specifications remain unchanged.
The WXGA resolution provides a good balance between available work space and the size of icons and text. This balance is perhaps the only good aspect of the display. Our measurements demonstrated that the display brightness has significantly dropped. Lenovo G470AH Charger The previously reviewed model featured an average brightness of 192 cd/m2 whereas the sample in this review was only capable of an average brightness of 137 cd/m2, reflecting a reduction of 50 cd/m2. This brightness is barely enough for indoor use despite its matte screen. This low brightness may make the unit unusable even under bright interior lighting and represents a clear step backward. This display does not meet the versatility requirements of modern notebooks. Lenovo G470G Charger The primary benefit of the display – being able to use maximum brightness without a significant increase in battery consumption – is entirely offset by the lack of screen visibility. Contrast, colors, and viewing angles show no discernible improvements over the previous variant. This allows us to conclude that this is one of the worst displays we have reviewed in the past several years. Lenovo IdeaPad G470 Charger
Compared to the AMD E-350 APU from the previously reviewed X121e, this variant uses the AMD E-300 APU, lacks dual-channel memory support, and has a CPU clock of 1.3 GHz, 300 MHz less than the
E-350. The Radeon HD 6310 still serves as the graphics card and maintains its 500 MHz clock speed. The 18 Watt Thermal Design Power (TDP) also remains unchanged. Lenovo IdeaPad G470A Charger
It should go without saying that the slower AMD E-300 underperforms the AMD E-350 used in the previous ThinkPad X121e. In our CPU benchmarks, we observed a performance reduction of about 20 percent due to the reduction in CPU clock speed. The E-300 achieved 941 points and 1809 points in Cinebench R10 64-bit Single- and Multi-CPU benchmark tests respectively. By comparison, the E-350 achieved 1158 points and 2196 points in the same tests respectively. The SuperPi 32m test took 2920 seconds instead of 2427 seconds as well. Lenovo IdeaPad G470AH Charger
We observed no throttling due to overheating or power constraints. The included 65 Watt power supply was adequate and the cooling was sufficient to keep the system temperatures quite low.
On battery power, we observed a CPU clock speed reduction. In the Cinebench R10 64-bit tests, the CPU scored 921 points (down from 941 points) and 1794 points (down from 1809 points) for Single-
and Multi-CPU tests respectively. Lenovo IdeaPad G470G Charger
In practical use, there is barely any noticeable difference in speed compared to the AMD E-350 model. Productivity programs and light photo editing were both smooth and one could work without interruption. Heavier tasks such as audio and video conversion highlighted the decreased clock speed. For example, converting MP3s using iTunes was done at a 9.2 speed instead of the 11.1 speed achieved by the E-350. Lenovo B570 Charger By comparison, the Intel Core i7-3610QM CPU achieved a speed of over 50 in iTunes. One might easily experience an increased conversion time of several minutes going from the E-350 to the E-300, depending on the number of MP3s that need to be converted.
The test ThinkPad was equipped with a slim 7 mm (0.28 in) 7200 RPM Seagate hard drive. This drive proved to be relatively fast but also relatively noisy.
Lenovo B570A Charger A solid state drive (SSD) would definitely improve the performance but would far exceed the total
cost of the system. As well, the weaker CPU could potentially throttle the SSD. Our sample did not support any mSATA SSDs. We attempted to use a 64 GB Crucial M4 in this slot and our test
notebook was unable to detect it. From this, we conclude that the slot is reserved for 3G modules with integrated antennae. Lenovo
The ThinkPad X121e's graphics card is the CPU-integrated AMD Radeon HD 6310 and features identical technical specifications as in the AMD E-350 APU. We expected worse results considering the weaker CPU. However, we achieved a 3DMark06 score of 2211 points reflecting a 200 point gain over the previous ThinkPad x121e with the E-350 APU. We attribute this performance gain to improved drivers that optimize performance. Lenovo IdeaPad B570 Charger In 3DMark Vantage, we observed almost identical results with the AMD E-300 scoring 707 points and the E-350 scoring 720 points. The E-350 also came out ahead in the Cinebench R10 64-bit OpenGL shading test with 1881 points compared to the E-300's 1707 points. These differences are measurable but perhaps not significantly noticeable. In the real world gaming performance of StarCraft 2, the difference corresponds to a reduction of only 2 fps. Lenovo IdeaPad B570A Charger
On battery power, the Cinebench 64-bit shading test result dropped from 1707 points to 1590 points. This difference was amplified in 3DMark06, dropping the score from 2211 points to 1627 points.
It is clear that one should expect graphical performance losses when running on battery power.
Lenovo IdeaPad B570G Charger The previously reviewed sample had a very good life and our current sample is almost
on the same level. The lower CPU clock speed and brightness yield better results in Wi-Fi surfing and the BatteryEater Classic Test. In typical usage with maximum brightness, one should expect
five to seven hours of battery life.
Lenovo V370 Charger Despite its low price, we do not recommend this configuration of the Lenovo ThinkPad X121e. The dimly lit display, and its corresponding low contrast, is not on par with modern notebooks and limits its usefulness. While battery life, weight, and size are suitable for portability, the impractical display makes no sense.
Lenovo V370A Charger The reduced CPU clock speed of the AMD E-300 APU is barely noticeable but this speed loss yields no real benefits. The price difference between the E-300 and E-350 is marginal and the battery life difference is negligible.
Lenovo V370G Charger The case's build quality and the reaction time of the touchpad remain irritating. The remaining qualities of the system are the low entry price for the Windows-less version, 3G-readiness, and high mobility in terms of battery life, weight, and size. These positive aspects, however, will only appeal to those who are unaware of the rather large drawbacks.
Quick Review Acer Aspire 7739Z-P624650MNKK Notebook
The Aspire family offers a variety of differently equipped models in various sizes. The 7739z is a 17.3-inch laptop at the lower-end of the performance spectrum. Acer Aspire Timeline Ultra M3 battery The system, which features an Intel P6200 processor and integrated Intel HD Graphics, has enough performance to tackle everyday tasks like internet browsing, office work, and videos - but unlike the Aspire members featuring a "G" in their name, it's not really suitable for more demanding 3D tasks (think modern computer games).
The exterior of the Aspire 7739Z is, except for the form factor, nearly identical to the 15-inch Acer-TravelMate-5744Z-P624G50Mikk. The black / charcoal gray chassis is made entirely out of plastic which is partially textured. Acer Aspire M5 battery
The main unit appears to be solidly built, is resistant to deformation and torsionally rigid. Because of the size and weight (3.3 kg), the display doesn't really lend itself to being opened from the corner but it resists twisting surprisingly well. The screen handles pressure reasonably well; only a fair amount of force will cause a change in the picture.
ACER Aspire S Series battery When we examined the Aspire closely, we discovered the same minor flaws that we noted when testing the TravelMate-5744Z: a few sharp edges and inconsistent gaps, especially around the display frame.
Considering the size of the LCD panel, the display hinges are stiff and comparatively small which causes the lid to rock back and forth after it's been opened. Opening the lid one-handed causes the base of the laptop to lift up a bit. ACER Aspire S7 Series battery
During idle, the notebook consumes between 11.3 and 20.4 watts which is in the same range as other systems like the HP 630-LH384EA or the Acer TravelMate 5744Z-P624G50Mikk. During maximum load, the 7739Z is the most power hungry out of the three systems - we need to consider though that the screen brightness is superior; the Travelmate also only features a smaller 15" monitor. Acer Aspire S Series battery The higher power consumption seems to be justified; and overall it doesn't seem to be too excessive. Compared to the more modern and significantly more powerful Sandy Bridge or Ivy Bridge architecture, this Arrandale-based systems seems downright archaic though.
The 7739Z comes equipped with a 48WH lithium-ion battery - a similar capacity battery is included with the HP 630-LH384EA and the Acer TravelMate 5744Z-P624G50Mikk. Since our test model consumes more power, it's not surprising that battery runtime is the lowest of the bunch. Acer Aspire S3 battery
For our BatteryEater Reader's Test, we turned down screen brightness to the lowest level, turned of WLAN, and chose the "energy saving" power profile. The laptop lasted for 270 min before shutting down wth 5% capacity left. During the more realistic WLAN test, the laptop reached the 5% threshold after 92 min. We wanted to change the 5%-capacity setting to 3% but where unable to do so. ACER Aspire V3 battery
For a 17.3-inch laptop the connectivity options are fairly limited - something one should expect in this price range. On the plus side, both VGA and HDMI ports are included, allowing for analog and digital display connections. The built-in 2-in-1 card reader supports SD and MMC. Unfortunately the 7739Z only offers 3 USB 2.0 ports but no faster options like eSATA or USB 3.0 for transmitting data from and to external storage devices. ACER Aspire 8943G battery
The placement of the ports towards the front of the laptop is less than ideal if they are utilized heavily because cables can get in the way. In addition, some ports (for example the USB ports on the right hand side) are placed very closely together. On the other hand all ports are within easy reach.
ACER Aspire Ethos 8943G battery The cabled ethernet connection via the Atheros AR8152 PCI-E Fast Ethernet Controller operates at 10/100MBit but not GigaBit speeds. Wireless connectivity to WiFi-Hotspots is provided by the Atheros AR5B125 Wireless Network Adapter (bgn) which also supports standard N. Bluetooth or an integrated broadband modem are not available.
ACER Aspire One E100 battery The low-resolution Acer Crystal Eye Webcam (640x480 Pixel; 0.3 MP) is adequate for video conferencing but not for more demanding applications.
What's in the box
Included are only the most basic necessities like the power adapter, battery, and informational material like quick-start guide and warranty information. The user is responsible for creating a system recovery DVD as one isn't included. This task can be easily accomplished using Acer's eRecovery Manager.
Acer Iconia 6120 battery The covers on the underside of the laptop only allow access to the hard disk drive, the RAM module, and the WLAN module. The battery is user replaceable but the laptop can be used sans battery without any issues.
According to the Homepage, Acer offers a 2 year standard warranty for all Aspire models in Germany; the first year is ITW (International Travelers Warranty).
Acer Iconia 6886 battery As far as the internal components are concerned, our laptop mirrors the 15-inch TravelMate-5744Z. Here is a quick synopsis:
The Pentium P6200 is based on the (now two year-old) Arrandale architecture. Potential buyers have to do without Turbo Boost or Hyperthreading.
Acer TravelMate 8372 battery The P6200 integrates a DDR3 memory controller and the DirectX 10 capable Intel GMA HD Graphics, which runs at 500 MHz (Turbo up to 667 MHz). The 2.13 GHz dual-core processor has, according to Intel, a TDP of 35 Watts. Thanks to the 4GB of available RAM (1 slot) and the 500GB hard disk, the laptop handles normal office tasks well; for much more the hardware configuration just isn't sufficient.
Acer TravelMate 8372G battery Subjected to the Cinebench R11.5 64-bit test, the 7739Z was only able to eke out a fairly mediocre 0.71 points during single-core rendering and 1.4 points during multi-core rendering. The results are in line with other P6200-equipped laptops though. Newer Core i3 entry-level processors offer quite a bit more performance. For additional information, check out our processor page; to compare other processors, take a look at our CPU benchmark comparison.
Acer TravelMate 8372T battery PCMark Vantage evaluates the overall system performance and its core components. Our test system reached a score of 4357 here - since the laptop uses the same components as the TravelMate-5744Z, it shouldn't come as a surprise that the performance of the two laptops is nearly identical. Considering the hardware being used, this is pretty much exactly what we expected performance-wise.
Acer TravelMate 8372TG battery The hard drive the system ships with is a Western Digital-sourced Scorpio Blue WD5000BPVT-22A1YT0 spinning at 5400 rpm and offering a capacity of 500GB. The hard drive is partitioned: 13.5GB are assigned to the Recovery Partition; 452.16GB are available as the C: - drive for system- and user data. The benchmark results mirror what we've come to expect from 5400 rpm hard disk drives.
Acer Iconia Tab W500 battery Intels HD Graphics offer the manufacturers of notebook systems an inexpensive graphics solutions since the card is packaged with the CPU. The video decoder is capable of smooth playback of movies and trailer at 1080p; 3D-performance is extremely low though. The Acer reached 1567 points during 3DMark 06 - a fairly typical result for this kind of hardware. The graphics card can't handle 3DMark Vantage and errors out with a "std::exception Device removed".
Acer Iconia Tab W501 battery Considering the hardware specs, there is no doubt that the 7739Z is not a gaming system. Games with low demands on the hardware are playable though. We tested the (slightly more) taxing Diablo 3, and managed a not-so-smooth 20 fps at the lowest setting. We performed additional tests of various games during our review of the TravelMate-5744Z, which uses the same hardware. Our list of games shows the performance of various games using different graphics solutions.
Acer Iconia Tab A100 battery The fan rarely kicks in during system idle and is almost inaudible at 31.5 dB(A). Hard drive access noise increases the level to 33.2 dB(A). The high-frequency humming of the power adapter gets annoying after a while. Under load, noise levels increase to a value of 38.3 dB(A) which is still fairly quiet. When playing movies, the DVD drive is very audible at 40.2 dB(A).
Acer Aspire 4250 battery Our test candidate stayed cool during idle. As one would expect, the temperature increases under load - we measured 38 degrees Celsius (100.4 Fahrenheit) on the bottom, and 43 degrees Celsius (109.4 Fahrenheit) on the top, respectively. The hand rest remains cool to the touch.
Acer Aspire 4251 battery During full load, internal temperatures can reach 70 degrees Celsius (158 Fahrenheit) - still
an OK number. The CPU does not get throttled - which is something 3DMark06 confirmed: the values after our load test are identical to ones we got during the "cold" system performance test.
Acer Aspire 4252 battery The speakers are located above the keyboard. The maximum volume could be a bit higher but the sound remains distortion-free. We found the bass to be lacking - a pretty common scenario with built-in speakers. The 3.5mm audio jack functions without any issues. HDMI allows for digital transmission of audio signals.
Acer Aspire 4253 battery You just can't expect too much from this value-priced 17-inch system. It doesn't have a lot of interface options and no fast ports for connecting external storage. The display is a glare-type and unsuitable for extended (professional) use. The hardware dates back to 2010 and is not sufficient to run demanding 3D games.
On the other hand, performance is more than adequate for running office applications or internet use. Considering the price point, the quality of the input devices and the chassis is not bad at all and the display is at least bright enough. Acer Aspire 4253G battery
Target audience for the Aspire 7739Z is the value-conscious home user who doesn't intend to play games. This price bracket offers a never-ending supply of constantly updated systems - some utilizing more current hardware. Shopping around pays off - if 500 Euros is your upper limit, take a look at the (AMD based) HPs Pavilion g7 or Packard-Bell EasyNote LK11.
Review Asus N56VZ-S4044V Notebook
Asus presents its new products with Ivy Bridge and installs a fast Intel Core i7-3610QM with four cores in the N56. For graphics cards, customers can choose between the tried and tested Nvidia GeForce GT650M in the N56VZ and the GeForce GT630M (based on the old Fermi architecture sporting a lower price) in the N56VM (here in the test update). ASUS G73SW-TZ096V battery Together with 8GB RAM, this combination should be sufficient for current games and HD Video playback, promising high application performance.
To make games and movies more enjoyable, more and more notebook manufacturers bet on higher quality speakers. For this, they work together with established audio brands. Asus took this a step further, like its predecessor; the N56VZ is delivered with a small, external sub-woofer, to augment the notebook's frequency range, typically heavy on treble and the midrange. The Danish manufacturer Bang & Olufsen provides the technology. ASUS G73SW-TZ120Z battery
While Asus' preceding mode, the N55 featured glossy surfaces and much plastic, the design of the N56 was completely revamped. The choice of materials, at least visually, tends strongly toward metal, rather than plastic. Did they make a worthy, maybe even a better successor? We will find out in this review. ASUS G73SW-TZ121V battery
The Asus N56 sports a new design and differs considerably from the previous N55. While we criticized the glossy surface of the N55's display lid, we're happy to find brushed metal on the new model. The Asus logo is inlaid into the surface and seems to be lit by the display back light. Even though the surface is not as sensitive to smudges and fingerprints anymore, they can still be noticeable on the new metal surface. ASUS G73SW-TZ146V battery
A matte, black plastic bezel frames the display, with a shiny silver Asus logo inlay below the screen. The top of the base unit is covered with a relatively thin sheet of aluminum with a separate cut-out for each of the keyboard's chiclet keys, as well as for the touch pad, breaking the otherwise homogeneous surface. ASUS G73SW-TZ200V battery
The touchpad suffers from flawed workmanship, as it is not recessed to an even depth. While its sides are recessed, the center of the lower edge is on a level with the wrist rest. The top edge actually rises above the aluminum plate. Sometimes we also hear rattling sounds in the pre-manufacturing sample of the N56VM we tested. ASUS G73SW-TZ202V battery
On the opposite side from the round, polished power button, there is a second button, which allows the user to assign a function. Around these two keys, there are concentric rings of gray dots bored into the aluminum. Beneath these holes, the laptop's speakers are mounted. The bottom of the notebook is made of matte black plastic. ASUS G73SW-TZ221V battery
Stability is good for the most part: The display lid hardly gives to pressure, though it can be twisted slightly. The hinges hold the display in place well with no wobbling. The top surface of the base unit does not give in the areas of keyboard and speakers. The area to the right, above the optical drive and the wrist rest do sag under a little bit of pressure though. ASUS G73SW-XA1 battery
The results for the case bottom are similarly mixed: The area toward the rear is very stable, but in the front, the plastic bends very easily. Overall, the base unit is very stiff, thanks to the aluminum sections, with good torsional rigidity. ASUS G73SW-XT1 battery
The sub-woofer had been slightly modified in comparison to the previous model. Its surface is now matte instead of reflective. The cable for it can now be stowed behind a cover.
Power Consumption ASUS G73SX battery
Depending on application, the power draw can vary widely. At idle, the notebook draws about 17W. It can't keep up with mobile sub-notebooks in that regard, but for the performance offered, the energy consumption is appropriate. This is achieved by deactivating the dedicated GPU and throttling down the CPU's clock speed. ASUS G75 battery
Under full load, the Notebook draws a full 120W, showing its untamed side. The juice required for the strong GPU, the fast quad core processor and the bright display start to add up. The 120W
power supply is a bit tight for the requirements of the laptop. Simultaneous charging of the battery at load is not possible. Stressing a power supply with 100% load is never a good idea, since
most power supplies have a sweet spot at around 80% utilization. ASUS G75V battery
The longest possible battery runtime was investigated with the BatteryEater Reader's Test (all wireless radios deactivated, minimum brightness), with the battery holding out for about 6 hours.
Much closer to everyday use is the WiFi surf test (WiFi radio active, display brightness medium at 150 cd/m², loading various web pages). Battery runtime drops considerably to just over half. ASUS G75VM battery At 3.25 hours, the notebook was not designed for long trips without power.
Watching a DVD on the notebook is usually without problems. With the battery fully charged, one can watch for up to 3 hours, which is sufficient for most movies.
Battery runtime under load is determined with the BatteryEater Classic test (maximum display brightness, a 3D scene being rendered to place a load on CPU and GPU). ASUS G75VW battery The Asus N56 reaches just under 2 hours of run time in this mode. The processor performance is identical whether the
notebook is plugged in or running on battery.
The N56VZ is based on Intel's new Ivy Bridge architecture, using the HM76 chip set. The support for USB 3.0 is to be viewed as the biggest improvement here, and Asus says good bye to USB 2.0 for this model as well. ASUS G75V 3D battery
The processor is a Quad Core i7-3610QM with a 45W TDP and a clock speed of 2.3GHz, which can be boosted up to 3.3GHz for a single core. When all four cores are used, they reach a maximum of 3.1GHz. The difference to the Sandy Bridge architecture is mainly the process node size, which was reduced from 32nm to 22nm. ASUS G75VM 3D battery This allows higher performance with unchanged power draw. So, the CPU performance of the Core i7-3610QM roughly matches the performance of the high end Sandy Bridge processor Core i7-2920XM.
The performance increase is just as significant for the integrated HD4000 GPU. In comparison to the old HD3000, the new GPU supports DirectX 11 and shows a performance increase of 80% in 3DMark. The older, but popular Nvidia GeForce GT540 GPU is only ahead by 16% now. ASUS G75VW 3D battery
Whenever performance of the integrated GPU is insufficient, the dedicated GeForce GT650M gets activated by Nvidia's Optimus technology. Notebook manufacturers are able to choose the core clock speed above the normal 735 MHz, provided the cooling system can handle the extra heat. Asus chose to increase the clock speed by 100 MHz and runs the GPU at 835 MHz for improved performance. Asus 15G10N373800
The otherwise identical Asus N56VM only differs from the N56VZ by using the weaker GeForce GT630M. You can find out what performance you can expect from it on our detail page about the GeForce GT630M, which is based on the older Fermi architecture. Asus 90-NED1B2100Y
RAM consists of two 4GB DDR3-1333 modules. The available 8GB should completely suffice for most applications. A Seagate 5400rpm hard drive with 1 TB capacity serves as storage.
We use Cinebench to evaluate processor performance. For this, a 3D scene is rendered over time. Here, Intel's Core i7-3610QM profits from its four cores, which can process two threads each. The N56VZ scores 6.2 points in Cinebench R11.5, which is an average score among notebooks with the i7-3610QM. Asus 90-NWF1B2000Y
To compare the gaming performance with other notebooks, we used the new DiRT Showdown. This game can be played relatively fluidly with high detail settings with an average of 54fps. With that, it exactly matches the Samsung 550P7C-S02DE (3610QM/GT650M), which also averaged 54fps. With maximum settings, frame rates fell to 19fps, which is too low for smooth game play, but is in the expected range for this GPU. Asus A32-M50
In native Full-HD resolution, 4x anti-aliasing and the "high" preset, DiRT Showdown can be played with an average of 38fps. The frame rate may sometimes dip to 32fps, but that is still a perfectly playable frame rate.
The N56VZ sports a potent all-round graphics solution with the GT650M, which manages to run current games with fluid frame rates. Asus A32-N61 For native Full-HD resolution game play, older or less demanding games will be satisfied with the prowess of the GT650M. Reducing resolution or graphics detail, one can always achieve a playable frame rates in newer games, while the games still look decent.
More benchmark results of the Geforce GT650M GPU are available in our article about the Nvidia Geforce GT650M and in our comprehensive Computer games on laptop graphics cards guide.
The first impression of this notebook is promising. The case has good stability and shows good workmanship for the most part. Surfaces are all matte and hence less susceptible to smudges and fingerprints. The external sub-woofer is also of good quality. Still, we found weaknesses here and there. Asus A33-M50
With interfaces, the N56VZ shines with four USB 3.0 connectors. But the fold-out LAN connector is dodgy at best and makes disconnection difficult. All connectors are placed unfavorably toward the front of the notebook. WiFi b/g/n and Bluetooth 4.0 are available for wireless connectivity. Asus L062066
The keyboard is well designed. One can type on it comfortably, even for longer periods of time. Thanks to the back light, it's possible to work or play in darkness as well. The touch pad is alright in regards to recognition of finger movement, but the implementation of the click pad is a failure. As usual, missing dedicated buttons are particularly annoying for drag and drop operations. Asus L072051
The Full-HD display is very bright and non-reflective, permitting comfortable use in bright surroundings and outdoors as well. Thanks to the good black value, contrast is pleasantly high.
The performance of the Asus N56 ranks in the upper levels, thanks to the high quality components. The notebook makes good use of the GPU's potential; it is perfectly suitable to play games on it, if not at the highest detail settings in its native Full-HD resolution. Asus L0790C6
It remains mostly silent, though it does get warm. Sound is very good thanks to the external sub-woofer and largely obviates the need for a separate sound system. Battery runtime is as it should be for this type of notebook. Asus C22-UX31
Overall, Asus has created a well-rounded product, which may attract a large group of buyers at just over EUR 1,000 (~$1250). Apart from some smaller weaknesses here and there, some of which may be attributed to the pre-production status of our test unit, it is not a target for severe criticism, and can be recommended for multimedia enthusiasts.
Tips on how to choose acer notebook ac adapter?
Acer producers notebooks as well as a range of notebook air conditioning plugs. It is actually obvious why everyone desires to have notebook hvac adapter when making use of the Acer laptop computer. toshiba satellite l515-sp4904a battery The actual superior reports is that Acer is often a throughout the world known corporation and contains a lot of of their limbs within lots of some other countries. In the occasions involving today everyone will be able to purchase them off of the on the internet retailers. notebook alternating current plugs tend to be really essential along with on the list of most significant laptop computer add-ons. toshiba satellite l630-01s battery Acer ac adapter comes in several distinctive size and shapes (versions). You must always be incredibly careful when getting a great Acer 12v charger mainly because that needs to be agreeable along with your laptop. Today's market place can be flooding with replicate chargers, thus end up being quite cautious with these illegal copies. You could locate these more affordable compared to unique kinds, but it may well cause damage for your notebook. toshiba satellite l630-05r battery
Acer laptop computers are available in a number of diverse versions that have distinctly unique capabilities. Therefore with this inside thoughts we know in which particular Acer laptop computer style provides their own specified wall chargers. toshiba satellite l630-13m battery Let's currently review the particular a variety of kinds of Acer laptop air conditioning plugs:
Wall charger for any particular Acer 19V three.Of sixteen The 60w: 60w adaptor which helps in converting Alternating current capability to DC power.
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Battery charger for the Sixty w NAC-11 Laptop Air conditioning adapter with power cord: adaptor together with 62 watt strength, a Electricity creation of 16V- 3.75A.
Wall charger for the certain Acer Would like 3600, collection: 65w adapter that assists in changing AC chance to Electricity strength. toshiba satellite l650-19p battery
Charger to get a distinct Acer Would like 3680 collection: 65w adapter that helps throughout converting AC capability to Electricity strength.
The superior technology in addition gives regarding charging the Acer on the run. Automobile wall chargers are usually obtainable that allows a user in order to fee an Acer laptop computer whenever happening long outings inside automobiles. toshiba satellite l650d-13u battery Nevertheless, 1 problem with these kinds of Acer pcs is that that they do not possess pv battery chargers. Photo voltaic chargers get distinctive benefits over the actual conventional chargers. Solar wall chargers help make asking less difficult comparatively. Some organizations have fallen track of their versions in the solar laptop computer ac adapters. toshiba satellite l655-s5059 battery So Acer undoubtedly is actually lacking upon that will count number, nevertheless apart from in which, a good Acer adapter which fits your own type of will be worth the actual obtain.
How to Buy the Low cost Acer Laptop computer Battery
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So there is absolutely no will need associated with getting chances along with your notebook due to lacking battery packs so when you would like to go for low-cost battery, usually choose cheap acer battery. toshiba satellite l670d-105 battery
There are the ones battery packs which have an appropriate denture that will perfectly match around the laptops bottom part as well as even though that they add some bodyweight on the laptop, additionally, they include extra duration of battery.
Nowadays you will discover perhaps people notebook computers which have a new particular slot created specifically for a subsequent battery pack so that you can include lifestyle for the unique electric battery within the mobile computer. toshiba satellite l670d-106 battery
When looking for a battery pack, make sure that you get a battery power that has a greater amount of tissues in it as well as preferably a single mobile or portable need to be capable of use a minimum associated with 50% capacity more than the usual electric battery although various laptops have got diverse power specifications. toshiba satellite l675 battery
If you obtain confusing with regards to which is the right battery pack on your pc, often ask the dealership or perhaps greater nevertheless attempt conversing with friends or even family that have the particular recognize how of the concern as well as within the finish visit the internet with regard to affirmation.
Online, you will find good quality and also low cost acer batteries that may unquestionably come having a one yr ensure. toshiba satellite l675d-s7012 battery
Dell Latitude E6410 Laptop Review
The Dell Latitude E6410 delivers all of the qualities an The idea division may desire in the well-known business-notebook program, in addition to the velocity, attributes, as well as creature comforts to make the particular finish customers in a organization pleased. That isn't the sexiest notebook Dell provides, yet qualities similar to longevity, prevalent factors, the actual ability to arrange, and also podium stableness have got their own allure inside it circles. toshiba satellite m645 battery
Processor: Intel i7-620M (2.66GHz)
Chipset: Intel QM57
Memory: 4G DDR3 (up to 8G safe-keeping)
Graphics: NVIDIA Quadro NVS 3100M Dedicated Graphics(512M VRAM)
Screen: 141-inch backlit WXGA, 1440X900 (16:10)
Hard Drive: 250GB 7200RPM
Battery: 85Wh 9-cell Li-ion
Dimension: 335x238x31.2 mm
Pre-install OS: Glass windows 7 Professional
Ports: the IEEE1394a, the Esata Combo (eSATA/USB2.0), VGA, RJ45, audio input/output jack port, DC electrical power jack, safety lock, Present Port
Design toshiba satellite m645-s4049 battery
The Dell Latitude E6410 provides a very modern day look and feel, having a couple of adjustments this kind of generation to present the nod in direction of past types. The particular E6400 introduced the most recent body fashion, with a african american alloy shell. toshiba satellite m645-s4055 battery The particular E6410 now about will keep the body design, but buttons back for the gunmetal dreary color scheme that has been located around the D630 along with D620 prior to it. The tip carries a pseudo-brushed appearance (decorated, not really actual cleaned metal like about the Horsepower EliteBook) which seems to resist finger prints more than the genuine thing. toshiba satellite pro c650-198 battery The reduced 50 percent of the notebook computer maintains the dark-colored metal design, using a large services solar panel that lets you access every thing inside the laptop by eliminating one particular twist. Inside the E6410 the look is actually flat african american upon every little thing in addition to the key pad as well as design letters. In comparison to just what you might uncover in the customer style, you'll find absolutely no lustrous or refractive surfaces besides the smaller opera letters on the Dell personalisation logo design. toshiba satellite pro l630 battery This is nice if you make use of notebook inside brightly ignited locations where insights may be distracting. In addition, it indicates in which streaks along with finger prints won't always be an issue via day-to-day use.
Your Latitude E6410 is packed having a a lot of extra contacts, such as 3 Hardware 2.3 plug-ins, an eSATA/USB mix interface, VGA as well as DisplayPort-out, music jacks, LAN, and FireWire-400. toshiba satellite pro l640 battery Various other attributes incorporate the eye push, SDHC-card viewer, along with a SmartCard reader.
Fundamentally, the exact same keyboard product is built to the Latitude E6410 while currently in the forerunner, E6400. Even so, the British isles examination unit proved to have the expected differences in the mapping regarding individual keys. When you get from Philippines, you'll obviously have the country-specific format. toshiba satellite pro l630-143 battery All purchases contain the now illuminated keyboard set within typical, that is seen really particularly inside undesirable lighting conditions.
The key dimension is nonetheless extremely large, whilst you'll be able to acquire delight in well-sized transfer, alt along with control tips. The actual arrow tips will also be pleasurable to utilize. They have been recently divided a bit in the remainder from the key pad and also have a regular key size. toshiba satellite pro l650-15p battery
Typing about the keyboard is simple along with with no noteworthy problem rates. We specially appreciated the unique force stage, the well-sized cerebrovascular event duration and also the nice soundscape, even in the course of the somewhat extra vigorous typing.
Dell integrates a couple of insight solutions being a portable computer mouse button substitute instantly. toshiba satellite pro l650-176 battery With regard to one particular thing, you will obtain the touch pad that will elevates by itself through the specifically gliding-eager floor and also a extremely good reaction. For another, the particular Latitude even offers a new TrackStick, which usually permits navigating without having readjusting and therefore includes a clear advantage within specific apps. toshiba satellite pro l650-1cr battery However, your TrackStick didn't completely encourage people inside useful utilize. Your TrackStick's feel cannot preserve the little finger through sliding away from, making the aforementioned readjusting crucial below. The particular not really really effective responsiveness is actually likely on account of that, way too.
Dell offer any 90W PSU as common even though your specs show that 65W is adequate to have an E6410 using the apple company GPU. toshiba satellite pro l670-15t battery Electrical power consumption at the mains socket actually peaked with 48W through benchmarking which usually foliage some margin pertaining to electric battery charging.
My E6410 arrived having a 90Wh 9-cell battery power (which is back suitable with the E6400 and also E6500). TOSHIBA Satellite E205 battery You will find additional possibilities starting from the hard-to-find 4-cell electric battery to your 12-cell electric battery cut. Dell didn??¡ê¡èt take consumer grumbles about the deficiency of the advertising these types of electric battery option when making the E6410. The battery sustains ExpressChargeTM, which Dell boasts will refresh jail battery power to be able to 80% entire within 1 hour. Toshiba Dynabook CX/45F battery Personally, I enjoy any reduced fee price to be able to lower the actual risk associated with battery degradation and have disabled ExpressChargeTM within the BIOS. Nevertheless, I am nevertheless seeing a charge price regarding up to concerning 50W.
Does deficiency of a very lower frequency way of your Central processing unit (the minimum rate will be 1200MHz) improve idle energy ingestion?Toshiba Dynabook CX/45G battery My own initial battery pack check ended up being play in the 3-hour Dances using Wolves Digital video disc with the show with 3/4 lighting. Battery capacity has been 36% (32.6Wh) at the finish from the DVD indicating a power strain of approximately 59Wh. Toshiba Dynabook CX/45H battery This is similar to the E6400, which didn't fairly attain the end of this Dvd movie while making use of any 56Wh battery power.
Compatible Models: dell latitude e6400 battery, dell latitude e6410 battery, dell latitude e6500 battery, dell latitude e6510 battery, dell pt434 battery, dell ky265 battery, dell precision m4400 battery, dell precision m4500 battery, dell cp284 battery, dell xx327 battery, dell precision m2400 battery, dell 312-0748 battery, dell 312-0749 battery, dell ky477 battery, dell 4n369 battery Toshiba Dynabook CX/45J battery
As already talked about within the starting, Dell's Latitude E6410 is available in a array of several configurations. Some alternatives aren't readily available within the online configurator, therefore you will also have to speak to if required. Based on your data bed sheet, the actual E6410 may be equipped with Apple company Primary i5 as well as i7 Arrendale CPUs, therefore dual-core chips. Toshiba Dynabook CX/47F battery The best available Central processing unit can be, therefore, the i7-620m, which is in addition utilised in your test system.
You could opt for between the Apple GMA HD built-in around the processor device and the devoted Nvidia NVS 3100M because the graphic minute card. Whilst, the particular integrated artwork remedy manages fundamental duties, i.at the. Windows Aero effects as well as movie rendering, the actual NVS 3100M could provide a little much more performance supplies with regards to Three dimensional representation along with deciphering video clip substance. Toshiba Dynabook CX/47G battery
Nevertheless, the particular Quadro NVS 3100M is only a basic visual card which is attuned with regard to specialist used in regards to drivers, as well as for that reason may be screened with regard to many Computer-aided-design apps. But it shouldn't as a result always be overrated with regards to efficiency abilities. The power utilization of as much as 14W (structurally the same as G210M/G310M) is additionally contra effective, primarily in the course of cell use in the laptop. Toshiba Dynabook CX/47H battery
Durability, stability and also cell connectivity with Dell's around the world assist are generally a lot of the robust selling factors in the Latitude E6410. Clearly, Dell offers performed an excellent task involving developing any effective laptop for way less than price for your worldwide business enterprise community. Toshiba Dynabook CX/47J battery Having its simplicity of restore and basic updates, it could save your corporation each time and dollars on IT assist.
Trouble Using Brand-new Battery power within the brand new sony Vaio Notebook
For all those that have any The Vaio mobile computer as well as experimented with trade electric battery getting the non-genuine, you might move showing a window using this type of distinct alert: Toshiba Dynabook CX/48F battery
Electric battery can't end up being properly connected for your pc or might not suitable for this.
Click "OK" to get in Hibernate function, get rid of and also reinsert battery power.
Begin to determine the User Guidebook VAIO (Ur) at the with regard to additional info on when utilizing sony laptop battery. Asus N10J battery
This can be not comfortable, and when clicking on "OK", laptops would go to hibernate mode. Moreover, there's the particular choice to shut the actual content material that is on additional plans, even if clicking a training course with out a person's understanding your content can again dominate the screen inside a few a few moments.
Having said that, if the occurred for you personally, do not problem your self. Asus N10J-A1 battery Even though Panasonic Vaio laptop computers have got software program that assessments if the battery can be authentic or otherwise not, you are able to disarm the idea via the following process:
Closing your window alert
- Right-click the actual Plugin as well as pick Start Job Manager (or cutting corners Control Adjust Esc or Manage Transform Andel depends around the actual operating-system) Asus N10J-A2 battery
- Click the Processes loss
- Uncover the ISBMgr.exe method and then click Complete Method.
Presently there, your window using the content disappears and also you can normally make use of one's laptop computer. Asus N10Jb battery Even so, the actual warning occurs every single period an individual reactivate laptop computers once more. For you to disable the idea, you certainly need to remain for the process below.
Massive autorun ISBMgr.exe
- Access the start Menu, Run
- Variety msconfig along with press ok Asus N10Jc battery
- Select the particular Startup company loss
- Locate as well as uncheck the ISB Power as well as press Okay to leave (you are able in order to resume your own pc today as well as after, regardless of).
Completed! This particular program will be differently abled and you are going to are working with this having a brand new simple sony laptop battery without needing to invest the particular capital with regard to price involving fifty percent laptop on her behalf! Asus N10JC-A1 battery
Applying the actual sign, this particular might be utilised environment to eliminate Start-up applications which are programs operating with out anyone's expertise whenever property house windows will begin. Some applications appear to be able to come to be quicker throughout simply by performing this particular, however, they are taking up the particular memory space, probably the most common the first is to disarm the actual Acrobat. Asus N10Jh battery
Regardless of the actual truth in which it's currently probable to make using non-original electric battery as part of your notebook computer, examine ahead of anyone obtain! Generally use sony battery which functions with the variety of your laptop. I'm not really accountable for any actual, private, psychological or psychological that will could occur as a result of improper use through the battery power or perhaps the laptop alone, merely presented a few guidance in which toiled to me, by simply employing this kind of procedure reaches your current private danger! Asus U1 battery
Actions to create Li-Ion The new sony Notebook Battery Keep Heading Lengthier:
- Prior to working with battery the particular extremely first occasion, charge electric battery towards the entire capability. Next, absolutely wear out the particular demand before the laptop hibernates as well as powers reduce immediately. Proceed performing this particular charging-tiring approach two or even three more events.
- It's crucial that you just entirely tire out electric battery month to month. Initially, detach notebooks within the AC adapter. Asus U1 battery Completely empty battery power just before the laptop instantly closes reduce as well as would likely go to the actual hibernate setting. Next connect your netbook's Alternating current adaptor. Duplicating this specific strategy month to month could help battery power acquire it's full cycle.
- Alternating current plugs must always be obstructed in anytime working with Dvd movie, online video or perhaps artwork modifying along with additional energy ingesting jobs. Asus U1E battery
- Highest doesn't indicate the perfect. Consequently, it truly is greatest to regulate your exhibit lighting that many carefully fits up your eyes. Furthermore, setting up screen saving bed as well as the snooze setting correctly can surely help save battery energy. Asus U1F battery
Chargeable notebook batteries right now must be recycled within New York
The particular Chargeable laptop batteries Law, authorized by simply then-Gov. David Paterson this past year, forbids the particular removal of standard rechargeable power packs, like those invoved with notebook computers or perhaps cameras, within non-recyclable pots. Asus U2 battery
The particular exclude includes mobile phone batteries, which are generally changed each and every Eighteen for you to Two years, and also normal rechargeable alkaline battery packs.
The actual normal rechargeable laptop battery should be returned to recycling where possible containers in retail shops.
Inside Summer, stores were required to supply these recycling containers for you to buyers of their retailers whenever they sold rechargeable power packs. Small food retailers which promote standard rechargeable power packs are usually exempt. Asus U2E battery
Failing to be able to deliver the actual containers could result in charges involving as much as $5,500 pertaining to suppliers. People, who would have to be verified to possess intentionally thrown out the actual electric batteries, confront charges of $50 for the first crime and $100 for a second. Asus U3 battery
"Those fingertips prohibits are usually quite tough to be able to impose. Anyone don't possess garbage authorities, anyone do not have cities or even non-public haulers filtering by means of people's trash hand bags and saying, 'You're unacceptable for you to toss this kind of out there,'" mentioned Laura Haight, a new elderly enviromentally friendly connect for brand spanking new York Open public Awareness Analysis Team. Asus U3S battery
What the law states addresses many standard rechargeable dried out mobile or portable, non-vehicular electric batteries weighing less when compared with 30 lbs. That provides virtually any standard rechargeable laptop battery since kinds using nickel-cadmium, closed guide, lithium ion or even nickel material hydride. Asus U3Sg battery
"I believe it's heading to make a new significant impact keep poisonous chemical substances away from dumps and also other locations where it could accomplish harm within our environment," stated Assemblyman John Sweeney, D-Suffolk Local, chairman from the Assembly Committee upon Environmental Conservation.
Haight and Sweeney said what the law states so far has been prosperous with regards to the location from the receptacles and also the numbers of folks making use of these people. Asus M50 battery
Battery power producers are necessary for you to get the actual obtained battery packs along with distribute once a year statement to the point out Department involving Environment Conservation.
"It sets primary obligation about the manufacturers as well as the stores to deal with this for the back end, when it is being discarded,In . Sweeney stated.
The first rechargeable hp g60 battery
Up to this point, all existing batteries would be permanently drained when all their chemical reactions were spent. Gaston Plant invented the lead-acid hp g60 battery , the first-ever hp g60 battery that could be recharged by passing a reverse current through it. Toshiba Satellite P500-ST6844 battery A lead acid cell consists of a lead anode and a lead dioxide cathode immersed in sulphuric acid. Both electrodes react with the acid to produce lead sulfate, but the reaction at the lead anode releases electrons whilst the reaction at the lead dioxide consumes them, thus producing a current. Toshiba Satellite P505 battery These chemical reactions can be reversed by passing a reverse current through the hp g60 battery, thereby recharging it.
Plant's first model consisted of two lead sheets separated by rubber strips and rolled into a spiral. His batteries were first used to power the lights in train carriages while stopped at a station. In 1881, Camille Alphonse Faure invented an improved version that consisted of a lead grid lattice into which a lead oxide paste was pressed, forming a plate. Toshiba Satellite P505-S8002 battery Multiple plates could be stacked for greater performance. This design was easier to mass-produce.
Compared to other batteries, Plant's was rather heavy and bulky for the amount of energy it could hold. However, it could produce remarkably large currents in surges. It also had very low internal resistance, meaning that a single hp g60 battery could be used to power multiple circuits. Toshiba Satellite P505-S8010 battery
The lead-acid hp g60 battery is still used today in automobiles and other applications where weight is not a big factor. The basic principle has not changed since 1859, though in the 1970s a variant was developed that used a gel electrolyte instead of a liquid (commonly known as a "gel cell"), allowing the hp g60 battery to be used in different positions without failure or leakage. Toshiba Satellite P505-S8011 battery
Today cells are classified as "primary" if they produce a current only until their chemical reactants are exhausted, and "secondary" if the chemical reactions can be reversed by recharging the
cell. The lead-acid cell was the first "secondary" cell.
1860s - the gravity cell
Main article: Gravity cell Toshiba Satellite P505-S8020 battery
A 1919 illustration of a gravity cell. This particular variant is also known as a crowfoot cell due to distinctive shape of the electrodes.
Sometime during the 1860s, a Frenchman by the name of Callaud invented a variant of the Daniell cell called the gravity cell. Toshiba Satellite P505-S8022 battery This simpler version dispensed with the porous barrier. This reduced the internal resistance of the system and, thus, the hp g60 battery yielded a stronger current. It quickly became the hp g60 battery of choice for the American and British telegraph networks, and was used until the 1950s. In the telegraph industry, this hp g60 battery was often assembled on site by the telegraph workers themselves, and when it ran down it could be renewed by replacing the consumed components. Toshiba Satellite P505-S8025 battery
The gravity cell consisted of a glass jar, in which a copper cathode sat on the bottom and a zinc anode was suspended beneath the rim. Copper sulfate crystals would be scattered around the cathode and then the jar would be filled with distilled water. Toshiba Satellite P505-S8940 battery As the current was drawn, a layer of zinc sulfate solution would form at the top around the anode. This top layer was kept separate from the bottom copper sulfate layer by its lower density and by the polarity of the cell.
The zinc sulfate layer was clear in contrast to the deep blue copper sulfate layer, which allowed a technician to measure the hp g60 battery life with a glance. Toshiba Satellite P505-S8941 battery On the other hand, this setup meant the hp g60 battery could be used only in a stationary
appliance, else the solutions would mix or spill. Another disadvantage was that a current had to be continually drawn to keep the two solutions from mixing by diffusion, so it was unsuitable for
1866 - the Leclanch cell Toshiba Satellite P505-S8945 battery
Main article: Leclanch cell
A 1912 illustration of a Leclanch cell.
In 1866, Georges Leclanch invented a hp g60 battery that consisted of a zinc anode and a manganese dioxide cathode wrapped in a porous material, dipped in a jar of ammonium chloride solution. The manganese dioxide cathode had a little carbon mixed into it as well, which improved conductivity and absorption. It provided a voltage of 1.4 volts. Toshiba Satellite P505-S8946 battery This cell achieved very quick success in telegraphy, signalling and electric bell work.
The dry cell form was used to power early telephonesusually from an adjacent wooden box affixed to the wallbefore telephones could C Battery's Final Voyage power from the telephone line itself. The Leclanch cell could not provide a sustained current for very long. Toshiba Satellite P505-S8950 battery In lengthy conversations, the hp g60 battery would run down, rendering the conversation inaudible.This was because certain chemical reactions in the cell increased the internal resistance and, thus, lowered the voltage.
Dell inspiron 1525 battery customers
Apple battles to help keep Hewlett packard, Dell and other dell inspiron 1525 battery customers through defecting. Toshiba Satellite P505D battery A number of nick colossus Intel's (INTC) greatest clients and companions tend to be discovering a contending microprocessor style, signaling the beginning of the much-anticipated tech donnybrook which experts say might trigger a remarkable transfer of the pc business. Simultaneously, the conflict in between Intel and it is nick dell inspiron 1525 battery challengers could prove a boon for consumers, as it floods shops having a higher variety of gadgets and helps to create added stress to help keep costs reduced. Toshiba Satellite P505-S8970 battery Hewlett-Packard (HPQ) and Dell, which account for another from the Santa claus Clara giant's product sales, are considering utilizing chips in certain dell inspiron 1525 battery according to British firm ARM's energy-efficient style. Intel's longtime collaborator Ms just introduced it will sell a leg tablet.
And some analysts believe Apple (AAPL) -- that currently utilizes dell inspiron 1525 battery the British-designed potato chips in its apple iphone, iPod as well as iPad -- may also use them in its laptops, that right now run on Apple tour. Toshiba Satellite P505-S8971 battery Unwilling to yield sales with no fight, Intel is actually pressing tough to move past pcs and obtain its very own chips in to smartphones along with other devices covered with it's rivals. But when this suffers significant customer desertions, a few experts say, it's iron grip around the microprocessor market might be destabilized. "It's beginning to obtain interesting,Inch stated Paul Feibus associated with TechKnowledge Methods. Toshiba Satellite P505-S8980 battery "Everything that people kind of knew as well as took as a given has been thrown out your window." Life for Apple used to be much simpler whenever computer dell inspiron 1525 battery systems had been big, clunky gadgets and mobile phones had been just for chatting. Its cpus, which use a style known as x86, had been dominant within PCs as well as Microsoft's well-liked Windows software program went solely upon x86. But the business has changed. Toshiba Satellite P505-ST5800 battery
While worldwide product sales of PCs this year are required to grow by less than 5 percent more than 2011, according to the Gartner research company, sales of mobile phones as well as tablets dell inspiron 1525 battery are required to leap through 39 % and 98 %, respectively. Toshiba Satellite P505D-S8000 battery However almost 100 percent of these little mobile device make use of ARM cpus, primarily because individuals circuits are more energy effective -- an advantage Apple is attempting hard to remove. Three,300 mAh battery for dell inspiron 1525 in order to AT&T, support yourself with regard to disappointment. Toshiba Satellite P505D-S8005 battery Intel recently introduced it's potato chips are now being included in 3 smartphones, more than 20 pills along with a variety of tablet-laptop hybrids dubbed ultrabooks. At the same time, Equip chipmakers -- including Nvidia, Texas Instruments, Qualcomm as well as Straight talk samsung -- are seeking to maneuver into servers and personal computer dell inspiron 1525 battery systems, Intel's grass, using a latest version associated with Home windows which runs on their own potato chips. Toshiba Satellite P505D-S8007 battery
Prolonging battery for hp pavilion dv4
Exactly what procedures might be best rely on the sort of battery for hp pavilion dv4 pack. NiCd cells should be completely cleared at times, in any other case it will lose capacity after a while in a very occurrence generally known as "memory effect". Toshiba Satellite P505D-S8930 battery Once a month (once every single 40 charges) is sometimes recommended. This particular runs living with the battery for hp pavilion dv4 pack since memory space result can be stopped whilst steering clear of total demand fertility cycles that are considered to be hard on all sorts of dry-cell power packs, ultimately resulting in a permanent decrease in electric battery potential. Toshiba Satellite P505D-S8934 battery
Modern cell phones, notebooks, and a lot electric powered automobiles make use of Lithium-ion power packs. These types of electric batteries last best if your battery power is frequently charged; fully discharging them will certainly degrade their own capability fairly swiftly. Any time saving nonetheless, lithium electric batteries weaken much more although completely charged than when they are just 40% charged. Toshiba Satellite P505D-S8935 battery Degradation also occurs more rapidly from higher temperatures. Degradation in lithium-ion electric batteries is a result of a heightened inner battery for hp pavilion dv4 weight as a result of cellular oxidation. This kind of reduces the particular productivity of the battery, producing a smaller amount world wide web current accessible to become used by the car battery. Toshiba Satellite P505D-S8960 battery However, when Li-ION cells are generally discharged under some voltage a chemical substance response occurs which make these unsafe if recharged, which is the reason almost certainly these electric batteries within client goods now have an "electronic fuse" that completely disables these people in the event the current drops beneath an arrangement amount. ASUS B80A-4G004 battery The actual digital join draws a tiny bit of present from the electric battery, meaning that if the notebook electric battery for hp pavilion dv4 remains for years without asking for the idea, and with a minimal original point out , it may be once and for all ruined.
Internal combustion motor autos, like fishing boats, RVs, ATVs, bikes, cars, pickup trucks, plus much more use lead Cacid battery for hp pavilion dv4 packs. ASUS B80A-4G004E battery These types of batteries use a sulfuric acidity electrolyte and will usually be charged along with dismissed with out demonstrating recollection result, although sulfation (a new chemical impulse within the battery power which usually debris a new layer regarding sulfates about the direct) will happen as time passes. Preserving the electrolyte degree inside the recommended array is essential. ASUS B80A-4G007C battery Whenever released, these types of electric batteries needs to be charged up again quickly to avoid sulfation. These kinds of sulfates are generally electrically insulating and for that reason restrict the actual move of charge in the sulfuric acid towards the steer, causing a reduced greatest current when compared with could be used by battery. Sulfated guide acid power packs normally break. ASUS B80A-4G007E battery
Lead Cacid power packs are experiencing substantially longer life when a routine maintenance charger can be used GE Builds a Better Battery for you to "float charge" the car battery for hp pavilion dv4. Jetski from it from ever before becoming under 100% charge, stopping sulfate via forming. ASUS B80A-4G019 battery Correct temperatures paid drift voltage must be accustomed to achieve the ideal results
Prepared battery for dell inspiron 1525
It may feel like summer only has simply begun, however battery for dell inspiron 1525 is already preparing with regard to back-to-school using the introduction of their newly remodeled Inspiron laptop loved ones. ASUS B80A-4P018E battery All of the new Inspiron laptops will offer options along with Intel's brand new 3rd Generation Primary we processors (Ivy Link), Windows 7 Home Premium, and will be eligible for the actual Windows Eight update program. The first Inspiron ultrabook, the actual Inspiron 14z, functions Intel Rapid Start Technology or more in order to 7 hours associated with life of the battery for dell inspiron 1525. ASUS B80A-4Q002E battery This ultrabook starts at Four.12 pounds and steps Zero.83-inches (21mm) from its thickest point. The Inspiron 13z features Change covers with regard to designing the ultrabook, as many as seven and a half hrs of life of the battery for dell inspiron 1525, the beginning weight of three.80 lbs, along with a thickness associated with Zero.82-inches (20.7mm). ASUS B80A-4Q008E battery The chassis is just shy of 22mm using the cover shut (and taking into consideration the silicon foundation underneath), and it is cooling system hurts air from vents which are located on the bottom from the battery for dell inspiron 1525 foundation.
Heated air is then pressed with the exhaust port around the backbone, simply in front of the screen. The base obtained a little comfortable once we used it for Web browsing, ASUS B80A-4Q027E battery YouTube watching as well as basic office focus on the clapboard, however it wasn't overly uncomfortable. Enthusiast sound had been bearable once the notebook was within heavy CPU or even images card load. An ultra-low current (17W) Ivy Link Core i7-3517U is at the helm of the configuration, and it has single.9GHz rate battery for dell inspiron 1525 of recurrence, two cores as well as Hyper-Threading. ASUS B80A-A1 battery It's accompanied by 8GB of DDR3 SDRAM (1333Mhz rather than 1600MHz), a good NVIDIA GeForce GT 630M images adapter (along with Optimus changing technologies), the 500GB hard disk (Hitachi HTS545050A7E380) along with a 32GB strong condition drive (Samsung PM830 SSD, m-SATA) to assist fast startup as well as caching. ACER Aspire One D257E battery This particular settings put up overall performance scores that are very good for a notebook battery for dell inspiron 1525 with a slim framework; within Blender Three dimensional it obtained a time period of 43sec, in iTunes MP3 encoding this got 51sec, while in the AutoGordianKnot DVD-to-Xvid test drive it got 53min.
Acer Aspire One 522 battery These answers are faster than the full-voltage, Exotic Link Primary i5-based Acer Aspire Timeline Ultra M3 Ultrabook achieved in the same assessments, and also slightly better than exactly what the One.8GHz, Primary i5-based Fujitsu LifeBook U772 Ultrabook accomplished. The actual Inspiron 15R as well as Inspiron 17R are full-featured laptop computers having a high-definition display, that was faster in HandBrake (One:Forty eight) slower dell 1525 battery in Photoshop, advanced sound along with Waves MaxxAudio Three battery for dell inspiron 1525 technology, and a variety of processor, memory and hard generate options. Acer Farrari 4005WLMi battery These types of laptops also feature optional colour Change covers. The actual Inspiron 15R Special Edition and 17R Special Edition offer Surf MaxxAudio Four audio collection and Skullcandy loudspeakers, as well as standard discrete images from AMD (Inspiron 15R Special Edition) as well as NVIDIA (Inspiron 17R Special Edition).
Frequently Asked Questions about Transporting Lithium Ion hp g60 battery by Air
Must consumer-type lithium ion hp g60 battery always be shipped as Class 9 dangerous good? Acer Ferrari 4000 battery
No. Almost all small Li-ion (less than 100Wh) in consumer products are except from dangerous goods regulations and do not require Class 9 labeling, marking or packaging.
In what quantities can lithium ion hp g60 battery be shipped?Lithium ion batteries can be shipped in small and large quantities. A single package may contain as few as five batteries, while a pallet may contain more than 1,000 packs. Acer Ferrari 4001 battery Why do some packages of Li-ion batteries contain a "Caution" marking and include shipping papers when most consumer lithium ion batteries are except from regulation?
In the US, the marking is mandatory for packages of more than 24 Li-ion cells or 12 Li-ion packs. The documents identify the goods and tell what to do if the package is damaged. Must lithium ion hp g60 battery be tested according to the UN Manual of Tests and Criteria? Acer Ferrari 4002 battery Yes, all Li-ion cells and packs shipped internationally must be tested. In the US, UN testing also includes small, consumer-size lithium ion cells and packs. Read about Building a Lithium-ion Pack.
To assure lithium-based hp g60 battery are designed and packaged to withstand transportation conditions, the US Department of Transportation (DOT) proposes new regulations. Acer Ferrari 4002WLMi battery While the Airline Pilots Association supports tighter restrictions and has called for lithium hp g60
battery to be fully regulated dangerous goods as airline cargo, PRBA recommends dropping the proposed rules in favor of the International Civil Aviation Organization requirement (ICAO), which has
been in effect since 2009 but was never applied in the US. Industry lobbyists say that the government has enough rules to ensure safe battery shipments and express concern that some shippers do
not follow packaging requirements. Acer Ferrari 4003 battery They recommend stronger enforcements there.
Proposed changes by the US Department of Transportation (DOT
Mandate that all hp g60 battery pose a hazard when transported.
Mandate transport documentation to accompany a shipment of small lithium batteries, including notifying the pilot of the location of Li-ion being shipped on the aircraft. Acer Ferrari 4004 battery
Require manufacturers to retain UN-specified tests for all lithium battery types transported.Make cargo locations accessible to crew, place cargo in locations equipped with an FAA-approved fire suppression system the horror of battery farming , or transport cargo in an FAA-approved container. Adopt watt-hours formula in place of equivalent lithium content. Acer Ferrari 4005 battery Put Li-ion not exceeding 100Wh in inner package of 10kg (22lb) limit; attach caution label.
Dell's XPS 13 Ultrabook dell 1525 battery
Dell's XPS 13 Ultrabook dell 1525 battery has been rather lonesome because it released in early Next year, however the company is presenting two new laptops in order to complete the actual up-to-date XPS line. Acer Ferrari 4006 battery These days it introduced the 14-inch XPS Fourteen and also the 15-inch XPS 15, both of which function the same light weight aluminum framework because the XPS 13 as well as run Core i5 or Core i7 Ivy Bridge processors. The actual XPS Fourteen Ultrabook will be available in two configurations, each of which incorporate a backlit computer dell 1525 battery along with a 400-nit, 1600 by Nine hundred show. Acer Ferrari 4006WLMi battery The main difference between your 2 models is online connectivity: the actual higher-end XPS 14 comes with incorporated special broadband and uses Dell's NetReady "pay while you go" service to get on the internet whenever Wi-Fi has run out of variety.
Both variations come with as much as 8GB of Memory and can end up being configured having a 500GB generate spinning from 5,Four hundred RPM combined with the 64gb Solid state drive or a standalone 512GB Solid state drive, and also the WWAN model comes regular having a 500GB generate with a totally free fall sensing unit aboard. Acer TravelMate 2100 batterysAnother dell 1525 battery difference is images: the bottom model ships along with Intel HD Images 4000, while the WWAN model offers an NVIDIA GeForce Gt bike 630M Graphics processing unit. Dell statements the laptop offers as much as 11 hours of runtime, "the greatest life of the battery of any Ultrabook." The actual XPS Fourteen starts from $1,099 and is available today. Acer TravelMate 8000 battery It just so happens which we have currently used the laptop for a full try out: take a look at our evaluation here. Next is the XPS Fifteen, that weighs in at 5.Seventy nine lbs and sports a 1920 x 1080 Corning Gorilla Glass display. Laptops dell 1525 battery consists of whether DVD-RW or Blu-Ray drive and includes as much as 16GB of RAM as well as 1TB of storage space. So far as graphics go, you receive a choice of NVIDIA's GeForce Gt bike 630M chip along with 1GB of devoted memory or GeForce Gt bike 640M images along with 2GB of Memory . Acer TravelMate 8100A battery
Pricing begins at $1,299, and such as the XPS 14 this laptop computer dell 1525 battery can be obtained these days. Check out the hands-on art gallery beneath. The government states this hasn't designed a definitive decision whether or not to deploy the missile batteries. And, if you prefer a thin 14-inch ultrabook laptop having a third-generation Apple Primary i-series processor, discrete graphics, along with a combination of solid-state generate (SSD) and hard-drive storage space, Dell's current Inspiron 14z could also fit the bill, for some hundred dollars less (and it weighs in at only Four.One lbs). Acer TravelMate 8100 battery It also shaves three hrs from the optimum dell 1525 battery life of the very energy-efficient design. The actual dell 1525 battery covers away at a Primary i5 Processor, the display resolution is gloomier, and also the images come from AMD, not Nvidia, however our evaluation settings of that system cost $899, as opposed to $1,199 to have an or else comparable XPS 14. Plus, the actual Inspiron 14z is a pretty sharp-looking system, especially considering the cost. Acer TravelMate 8101 battery No, it is not as sharp, as configurable, or as well built, as the XPS 14 reviewed right here, but hello, it is your cash.
dv4 battery recycling
Battery recycling is a recycling activity that aims to reduce the number of batteries being disposed as municipal solid waste. Batteries contain a number of heavy metals and toxic chemicals,
their dumping has raised concern over risks of soil contamination and water pollution. Acer TravelMate 8102 battery
dv4 battery recycling by type
Most types of batteries can be recycled. However, some batteries are recycled more readily than others, such as lead-acid automotive batteries (nearly 90% are recycled) and button cells
(because of the value and toxicity of their chemicals). Other types, such as alkaline and rechargeable, can also be recycled. Acer TravelMate 8102WLCi battery
These batteries include but are not limited to: car batteries, golf cart batteries, UPS batteries, industrial fork-lift batteries, motorcycle batteries, and commercial batteries. These can be
regular lead acid, sealed lead acid, gel type, or absorbent glass mat (AGM) batteries.These are recycled by grinding them, neutralizing the acid, and separating the polymers from the lead. The
recovered materials are used in a variety of applications, including new batteries.
Recycling the lead from batteries. Acer TravelMate 8103 battery
The lead of lead-acid dv4 battery can be recycled. Elemental lead is toxic and should therefore be kept out of the waste stream.
Lead-acid batteries collected by an auto parts retailer for recycling.
Many cities offer dv4 battery recycling services for lead-acid batteries. In some jurisdictions, including US states and Canadian Provinces, a refundable deposit is paid on batteries. This encourages recycling of old batteries instead of abandonment or disposal with household waste. Acer TravelMate 8103WLMi battery In the United States, about 97% of lead from used batteries is reclaimed for recycling.
Businesses which sell new car batteries may also collect used batteries (and may be required to do so by law) for recycling. Some businesses will accept old batteries on a "walk-in" basis (not in
exchange for a new dv4 battery). Most dv4 battery shops and recycling centres will pay for scrap batteries. This can be a lucrative business, enticing especially to risk-takers because of the
wild fluctuations in the value of scrap lead that can occur overnight. Acer TravelMate 8104 battery When lead prices go up, scrap
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Silver oxide batteries
Used most frequently in watches, toys and some medical devices, silver oxide batteries contain a small amount of mercury. In most jurisdictions there exists legislation to regulate the
appropriate handling and disposal of silver oxide batteries to reduce discharge of mercury to the environment. Silver oxide batteries can be recycled to recover the mercury.
Acer TravelMate 8104AWLMi battery
dv4 battery composition by type
Dell launches laptop battery recycling programme
Italics designates button cell types.
Bold designates secondary types.
All figures are percentages, on account of rounding they may not add up to exactly 100.
Macbook Guru apple macbook 13-inch battery
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Battery for ASUS B53
In 1836, John F. Daniell, an English chemist, developed an improved battery which produced a steadier current than Volta's device. Until then, all batteries had been composed of primary cells, meaning that they could not be recharged. In 1859, the French physician Gaston Platé invented the first rechargeable battery. This secondary Battery for ASUS K42JC was based on lead acid chemistry, a system that is still used today. William Cruickshank, an English chemist, built a battery of electric cells by joining zinc and copper plates in a wooden box filled with electrolyte. This flooded design had the advantage of not drying out with use and provided more energy than Volta’s disc arrangement. ©Cadex Electronics Inc.Battery for ASUS K42JB
Toward the end of the 1800s, giant generators and transformers were built. Transmission lines were installed and electricity was made available to humanity to produce light, heat and movement. In the early twentieth century, the use of electricity was further refined. The invention of the vacuum tube enabled generating controlled signals, amplifications and sound. Soon thereafter, radio was invented, which made wireless communication possible.Battery for ASUS K42JA
In 1899, Waldmar Jungner from Sweden invented the nickel-cadmium battery, which used nickel for the positive electrode and cadmium for the negative. Two years later, Edison produced an alternative design by replacing cadmium with iron. Due to high material costs compared to dry cells or lead acid storage batteries, the practical applications of the nickel-cadmium and nickel-iron batteries were limited.It was not until Shlecht and Ackermann invented the sintered pole plate in 1932 that large improvements were achieved. Battery for ASUS K42J
In full-duplex radio, the two transmitters use different frequencies, so both parties can talk at the same time. Cell phones are full-duplex. Full-duplex vs. half-duplex - Both walkie-talkies and CB radios are half-duplex devices. That is, two people communicating on a CB radio use the same frequency, so only one person can talk at a time. A cell phone is a full-duplex device. That means that you use one frequency for talking and a second, separate frequency for listening.Both people on the call can talk at once. Channels - A walkie-talkie typically has one channel, and a CB radio has 40 channels. Battery for ASUS K52JR
A typical cell phone can communicate on 1,664 channels or more! Range - A walkie-talkie can transmit about 1 mile (1.6 km) using a 0.25-watt transmitter. A CB radio, because it has much higher power, can transmit about 5 miles (8 km) using a 5-watt transmitter. Cell phones operate within cells, and they can switch cells as they move around. Cells give cell phones incredible range. Someone using a cell phone can drive hundreds of miles and maintain a conversation the entire time because of the cellular approach.Battery for ASUS K52JK
In a typical analog cell-phone system in the United States, the cell-phone carrier receives about 800 frequencies to use across the city. The carrier chops up the city into cells. Each cell is
typically sized at about 10 square miles (26 square kilometers). Cells are normally thought of as hexagons on a big hexagonal grid, like this:Because cell phones and base stations use low-power
transmitters, the same frequencies can be reused in non-adjacent cells. The two purple cells can reuse the same frequencies.
Each cell has a base station that consists of a tower and a small building containing the radio equipment. Battery for ASUS K52JE
We'll get into base stations later. First, let's examine the "cells" that make up a cellular system.One of the most remarkable and novel discoveries in the last 400 years has been electricity. One may ask, “Has electricity been around that long?” The answer is yes, and perhaps much longer. But the practical use of electricity has only been at our disposal since the mid-to late 1800s, and in a limited way at first. At the world exposition in Paris in 1900, for example, one of the main attractions was an electrically lit bridge over the river Seine.Battery for ASUS K52JC
The earliest method of generating electricity occurred by creating a static charge. In 1660, Otto von Guericke constructed the first electrical machine that consisted of a large sulphur globe which, when rubbed and turned, attracted feathers and small pieces of paper. Guericke was able to prove that the sparks generated were truly electrical.The first suggested use of static electricity was the so-called “electric pistol”. Invented by Alessandro Volta (1745-1827), an electrical wire was placed in a jar filled with methane gas. Battery for ASUS K52JB
By sending an electrical spark through the wire, the jar would explode.Volta then thought of using this invention to provide long distance communications, albeit only addressing one Boolean bit. An iron wire supported by wooden poles was to be strung from Como to Milan, Italy. At the receiving end, the wire would terminate in a jar filled with methane gas. On command, an electrical spark is sent by wire that would detonate the electric pistol to signal a coded event. This communications link was never built.Battery for ASUS K52J
Volta’s discovery of the decomposition of water by an electrical current laid the foundation of electrochemistry. ©Cadex Electronics Inc.In 1791, while working at Bologna University, Luigi Galvani discovered that the muscle of a frog contracted when touched by a metallic object. This phenomenon became known as animal electricity — a misnomer, as the theory was later disproven. Prompted by these experiments, Volta initiated a series of experiments using zinc, lead, tin or iron as positive plates. Copper, silver, gold or graphite were used as negative plates.Volta discovered in 1800 that a continuous flow of electrical force was generated when using certain fluids as conductors to promote a chemical reaction between the metals or electrodes. Battery for ASUS K52F
This led to the invention of the first voltaic cell, better know as the battery. Volta discovered further that the voltage would increase when voltaic cells were stacked on top of each otherIn the same year, Volta released his discovery of a continuous source of electricity to the Royal Society of London. No longer were experiments limited to a brief display of sparks that lasted a fraction of a second. A seemingly endless stream of electric current was now available.Battery for ASUS K52DR
France was one of the first nations to officially recognize Volta’s discoveries. At the time, France was approaching the height of scientific advancements and new ideas were welcomed with open arms to support the political agenda. By invitation, Volta addressed the Institute of France in a series of lectures at which Napoleon Bonaparte was present as a member of the Institute. Battery for ASUS K52
Volta’s discoveries so impressed the world that in November 1800, he was invited by the French National Institute to lectures in which Napoleon Bonaparte participated. Later, Napoleon himself helped with the experiments, drawing sparks from the Battery for ASUS K52DE , melting a steel wire, discharging an electric pistol and decomposing water into its elements. ©Cadex Electronics Inc.New discoveries were made when Sir Humphry Davy, inventor of the miner’s safety lamp, installed the largest and most powerful electric battery in the vaults of the Royal Institution of London. He connected the battery to charcoal electrodes and produced the first electric light. As reported by witnesses, his voltaic arc lamp produced “the most brilliant ascending arch of light ever seen.”Battery for ASUS K52D
Davy's most important investigations were devoted to electrochemistry. Following Galvani's experiments and the discovery of the voltaic cell, interest in galvanic electricity had become widespread. Davy began to test the chemical effects of electricity in 1800. He soon found that by passing electrical current through some substances, these substances decomposed, a process later called electrolysis. The generated voltage was directly related to the reactivity of the electrolyte with the metal. Evidently, Davy understood that the actions of electrolysis and the voltaic cell were the same.Battery for ASUS K42N
In 1802, Dr. William Cruickshank designed the first electric Battery for ASUS K42JV capable of mass production. Cruickshank had arranged square sheets of copper, which he soldered at their ends, together with sheets of zinc of equal size. These sheets were placed into a long rectangular wooden box that was sealed with cement. Grooves in the box held the metal plates in position. The box was then filled with an electrolyte of brine, or watered down acid.Battery for ASUS K42JR
The third method of generating electricity was discovered relatively late — electricity through magnetism. In 1820, André-Marie Ampère (1775-1836) had noticed that wires carrying an electric current were at times attracted to one another while at other times they were repelled.In 1831, Michael Faraday (1791-1867) demonstrated how a copper disc was able to provide a constant flow of electricity when revolved in a strong magnetic field. Faraday, assisting Davy and his research team, succeeded in generating an endless electrical force as long as the movement between a coil and magnet continued. Battery for ASUS K42JK
The electric generator was invented. This process was then reversed and the electric motor was discovered. Shortly thereafter, transformers were developed that could convert electricity to a desired voltage. In 1833, Faraday established the foundation of electrochemistry with Faraday's Law, which describes the amount of reduction that occurs in an electrolytic cell.Battery for ASUS K42JE
Battery for Asus A7G
Charcoal is wood that has been heated to remove nearly all of the volatile gases and leave behind the carbon. That is why a charcoal fire burns with no smoke. The actual burning of wood then happens in two separate reactions: When the volatile gases are hot enough (about 500 degrees F (260 degrees C) for wood), the compound molecules break apart, and the atoms recombine with the oxygen to form water, carbon dioxide and other products. In other words, they burn. The carbon in the char combines with oxygen as well, and this is a much slower reaction. Battery for Fujitsu LifeBook N3400
That is why charcoal in a BBQ can stay hot for a long time. A side effect of these chemical reactions is a lot of heat. The fact that the chemical reactions in a fire generate a lot of new heat is what sustains the fire. Many fuels burn in one step. Gasoline is a good example. Heat vaporizes gasoline and it all burns as a volatile gas. There is no char. Humans have also learned how to meter out the fuel and control a fire. A candle is a tool for slowly vaporizing and burning wax. As they heat up, the rising carbon atoms (as well as atoms of other material) emit light. Battery for Fujitsu LifeBook N3410
This "heat produces light" effect is called incandescence, and it is the same kind of thing that creates light in a light bulb. It is what causes the visible flame. Flame color varies depending
on what you're burning and how hot it is. Color variation within in a flame is caused by uneven temperature. Typically, the hottest part of a flame -- the base -- glows blue, and the cooler parts
at the top glow orange or yellow. In addition to emitting light, the rising carbon particles may collect on surrounding surfaces as soot.Battery for Fujitsu LifeBook N3430
The dangerous thing about the chemical reactions in fire is the fact that they are self-perpetuating. The heat of the flame itself keeps the fuel at the ignition temperature, so it continues to burn as long as there is fuel and oxygen around it. The flame heats any surrounding fuel so it releases gases as well. When the flame ignites the gases, the fire spreads.On Earth, gravity determines how the flame burns. All the hot gases in the flame are much hotter (and less dense) than the surrounding air, so they move upward toward lower pressure. Battery for Fujitsu FMV-A2200
This is why fire typically spreads upward, and it's also why flames are always "pointed" at the top. If you were to light a fire in a microgravity environment, say onboard the space shuttle, it would form a sphere!n the 1970s, Alan Kay of the Xerox Palo Alto Research Center had a vision for a wireless portable computer roughly the size of a notebook. He called it the Dynabook. Kay's Dynabook never got past sketches and a cardboard model, but it set the wheels in motion for the development of a truly portable computer.Battery for Fujitsu FMV-A6270
Laptops are also more expensive than desktops. The price gap is closing, though -- laptop prices are falling faster than desktop prices, and laptop PCs actually outsold desktop models for the first time in May of 2005 [Source: Windows IT Pro]. How can all the equipment found in a desktop tower fit into such a small package? And how can laptops be efficient enough to run on Battery for Asus A7J power alone?
In this article, you'll discover the answers to these and other questions about laptops. Overall, laptop and desktop computers are very similar. They have the same basic hardware, software and operating systems. The primary difference is how their components fit together. A desktop computer includes a motherboard, video card, hard drive and other components in a large case. The monitor, keyboard, and other peripherals connect wirelessly or with cables. Whether the case sits vertically or horizontally, it has lots of space for add-in cards, cables and air circulation.Battery for Asus A7G
A laptop, however, is much smaller and lighter than even the most compact PC tower. Its screen is an integrated part of the unit, as is its keyboard. Instead of a spacious case with lots of room for air circulation, a laptop uses a small, flat design in which all the pieces fit together snugly. Because of this fundamental design difference and because of a laptop's inherent portability, components have to: Often, these differences make the components more expensive, which can contribute to higher laptop prices. In the following sections, we'll examine how laptops handle these differences.Battery for Asus A7F
A laptop's memory can make up for some of the reduced performance that comes from a slower processor. Some laptops have cache memory on or very near the CPU, allowing it to access data more quickly. Some also have larger busses, allowing data to move between the processor, motherboard and memory more quickly. Some laptops have upgradeable memory and feature removable panels for easy access to the memory modules.Battery for Asus A7D
Like a desktop, a laptop has an internal hard disk drive, which stores the operating system, applications and data files. However, laptops generally have less disk space than desktops. A laptop hard drive is also physically smaller than that of a desktop. In addition, most laptop hard drives spin more slowly than desktop hard drives, reducing both heat and power consumption. Desktop computers have multiple bays for installing additional drives, such as CD and DVD ROM drives. However, space in a laptop is in much shorter supply. Many laptops use a modular design, allowing a variety of drives to fit in the same bay. Battery for Asus A7C
These drives come in three different designations: Hot swappable - The computer can stay on while changing the drive. Warm swappable - The computer can stay on while changing the drive, but the corresponding bus (the path the drive uses to send data to the CPU) must be inactive. Cold swappable - The computer must be off during the swap. In some cases, these drive bays are not just limited to drives but will also accept extra batteries.Battery for Asus A7
Next, we'll look at the video processing and display capabilities of a laptop.Laptops and desktops both run on electricity. Both have small batteries to maintain the real-time clock and, in some cases, CMOS RAM. However, unlike a desktop computer, a laptop is portable and can run on batteries alone. Nickel-Cadmium (NiCad) batteries were the first type of Battery for Asus A6Vm commonly used in laptop computers, and older laptops sometimes still use them. They have a life of roughly two hours between charges, but this life decreases with each charge based on the memory effect. Gas bubbles form in the cell plates, reducing the total amount of available cell space for recharge. The only way around this is to discharge the battery completely before recharging it. The other drawback of NiCad is that if the Battery for Asus A6Vc charges too long, it can explode. Nickel-Metal Hydride (NiMH) batteries are the bridge between NiCad and the newer Lithium-Ion (LiIon) batteries. They last longer between charges than NiCad but overall have a shorter total lifespan. They suffer from the memory effect, but to a lesser extent than NiCad batteries.Battery for Asus A6Va
LiIon Battery for Asus A6V is the current standard for laptop computers. They are light and have long life spans. They do not suffer from the memory effect, can be charged randomly, and won't overheat if overcharged. They are also thinner than any other battery available for laptops, making them ideal for the new ultra-thin notebooks. LiIon batteries can last for anything from about 950 up to 1200 charges. Many laptops with LiIon batteries claim to have a 5-hour Battery for Asus A6U life, but this measurement can vary greatly depending on how the computer is used. The hard drive, other disk drives and LCD display all use substantial battery power. Even maintaining wireless Internet connectivity requires some battery power. Many laptop computer models have power management software to extend the battery life or conserve Battery for Asus A6Tc power when the battery is low. Print Cite FeedbackFire can destroy your house and all of your possessions in less than an hour, and it can reduce an entire forest to a pile of ash and charred wood. It's also a terrifying weapon, with nearly unlimited destructive power. Fire kills more people every year than any other force of nature.Battery for Asus A6T
But at the same time, fire is extraordinarily helpful. It gave humans the first form of portable light and heat. It also gave us the ability to cook food, forge metal tools, form pottery, harden bricks and drive power plants. There are few things that have done as much harm to humanity as fire, and few things that have done as much good. It is certainly one of the most important forces in human history. But what is it, exactly? The ancient Greeks considered fire one of the major elements in the universe, alongside water, earth and air. Battery for Asus A6R
This grouping makes intuitive sense: You can feel fire, just like you can feel earth, water and air. You can also see it and smell it, and you can move it from place to place. But fire is really something completely different. Earth, water and air are all forms of matter -- they are made up of millions and millions of atoms collected together. Fire isn't matter at all. It's a visible, tangible side effect of matter changing form -- it's one part of a chemical reaction.Battery for Asus A6N
We’ll look at how that reaction creates heat and light next.Many people build custom PCs for themselves or customers. These home-made computers, called whiteboxes, represent a significant portion of the computer market. Some people also modify their computers for cosmetics or performance. This is called modding. But what about building or modding a laptop? A modded or homemade laptop is called a whitebook. Battery for Asus A6M
Whitebooks represent about 5 percent of the notebook market right now, and this number is slowly rising. The industry has done a pretty good job of keeping end users out of laptops. They've made it difficult to open, modify and get parts for a laptop. In addition, opening the laptop chassis voids the manufacturer's warranty in most cases. It is still difficult to find parts to build a laptop from the ground up, but vendors like ASUS and ECS allow some customers to order blank laptop shells. Battery for Asus A6L
They are especially open to resellers who build whitebooks and sell them to customers. In addition, people can mod or upgrade what came with the shell. Companies like TechStyle have made a business of it.At this point, there are no real standards for the form factor (shape and design) of laptop parts. Processors designed for laptops are available for sale, but finding a motherboard for those chips is a different story. Hard drives are pretty standard, and SODIMM system memory is easy to come by, but other parts may take some digging.Battery for Asus A6K
Typically, fire comes from a chemical reaction between oxygen in the atmosphere and some sort of fuel (wood or gasoline, for example). Of course, wood and gasoline don't spontaneously catch on fire just because they're surrounded by oxygen. For the combustion reaction to happen, you have to heat the fuel to its ignition temperature. Something heats the wood to a very high temperature. The heat can come from lots of different things -- a match, focused light, friction, lightning, something else that is already burning... Battery for Asus A6J
When the wood reaches about 300 degrees Fahrenheit (150 degrees Celsius), the heat decomposes some of the cellulose material that makes up the wood.
Some of the decomposed material is released as volatile gases. We know these gases as smoke. Smoke is compounds of hydrogen, carbon and oxygen. The rest of the material forms char, which is nearly pure carbon, and ash, which is all of the unburnable minerals in the wood (calcium, potassium, and so on). The char is what you buy when you buy charcoal. Battery for Fujitsu LifeBook C1410
Battery for ASUS K52N
In any case you should perform a full discharge and recharge cycle every few weeks and avoid fully discharing your Li-Ion Battery for ASUS F8Sa in the meantime.Dell plans to recycle however many of the 4.1 million recalled batteries that customers turn in (see Dell battery recall not likely to have big environmental impact), but what happens to the other 2 billion lithium ion Battery for ASUS N80 which will be sold this year? Most will last for 300 to 500 full recharges (one to three years of use) before failing and ending up in your local municipal landfill or incinerator. According to the U.S. government, lithium ion batteries aren't an environmental hazard. "Lithium Ion batteries are classified by the federal government as non-hazardous waste and are safe for disposal in the normal municipal waste stream," says Kate Krebs at the National Recycling Coalition. While other types of Battery for ASUS N80Vn includes toxic metals such as cadmium, the metals in lithium ion batteries - cobalt, copper, nickel and iron - are considered safe for landfills or incinerators (Interestingly enough, lithium ion batteries contain an ionic form of lithium but no lithium metal).Battery for ASUS N81
Europeans have a dimmer view of landfilling lithium ion Battery for ASUS N81Vg . "There is always potential contamination to water because they contain metals," says Daniel Cheret, general manager at Belgium-based Umicore Recycling Solutions. The bigger issue is a moral one: the products have a recycling value, so throwing away 2 billion batteries a year is just plain wasteful - especially when so many American landfills are running out of space. "It’s a pity to landfill this material that you could recover," Charet says. He estimates that between 8,000 and 9,000 tons of cobalt is used in the manufacture of lithium ion Battery for ASUS N81Vp each year. Each battery contains 10 to 13% cobalt by weight. Umicore recyles all four metals used in lithium ion batteries. The reason why more lithium ion batteries aren't recycled boils down to simple economics: the scrap value of batteries doesn't amount to much - perhaps $100 per ton, Cheret says. In contrast, the cost of collecting, sorting and shipping used batteries to a recycler exceeds the scrap value, so Battery for ASUS X80 tend to be thrown away. Unfortunately, the market does not factor in the social cost of disposal, nor does it factor in the fact that recycling metals such as cobalt has a much lower economic and environmental cost than mining raw materials. So we throw them away by the millions. Battery for ASUS X80N
As in many areas of environmental protection, the European Union is far ahead of the U.S., having passed a Battery for ASUS P82 recycling law that will require vendors to reclaim for recycling a minimum of 25% of the batteries they manufacture and sell - including lithium ion. It's a shame we can't provide economic incentives to do the same on this side of the pond. How many of you out there know about proper laptop battery care? There are so many urban legends and myths regarding Battery for ASUS P62 that it is hard to know what is real and what is not. MakeUseOf had an article 20 Ways To Increase Laptop’s Battery Life which mentioned a number of useful tips. This time we introduce to a rather different app called BatteryCare which can help you understand the ways of battery guruness”¦.is that a word? Probably not but hey it sounds good! Way back when, it was very bad to leave your laptop plugged in and charging after the Battery for ASUS P52J was charged. Nowadays this is not the case because the computer switches to a trickle charging mode when the battery hits 100%. BatteryCare not only gives you a glimpse at a glance of your available power including the time you have left it also does some neat tricks that can help you extend your laptop Battery for ASUS P52JC life.
After downloading and installing this small application you will have a new system tray icon. Mine is all the way to the left. It tells me that my Battery for ASUS P52F is 95% charged and can operate for 2 hours and 36 minutes at the current rate. This is a HUGE improvement over the normal battery meter you see in the middle of my system tray.The first trick it can do is change your power settings to a different profile depending on if you are plugged into power or not. These profiles can turn down your screen’s brightness or turn off Bluetooth.To setup a power profile you can visit your Power Options in your Windows control panel. Once you have them set up or you decide to use the built in ones, click on the BatteryCare icon and open the application. You will see the screen below.Next up, hit the options button and then Power Plans. Simply check the box that says Automatically select Power Plans. Battery for ASUS P52
Then choose the plans you want to switch to when you are on Battery for ASUS P42J or AC power. When you are done click accept - yes, it is that easy!While we are in the options let’s see what other choices we have. Under advanced options you can be notified when a Full Discharge is necessary to improve the performance of your battyer and extend the laptop battery life. The program tells this by noting how many discharges your machine has had since it started running. You can manually adjust this number if you are not running this against a new Battery for ASUS P42JC , do this by setting the Discharge cycles count manual adjustment number at the bottom. I set mine to three. When you reach your set number you will be prompted to fully discharge your battery.By clicking on the detailed information tab you can see the battery manufacturer as well as designed capacity and total capacity, this can tell you if your Battery for ASUS P42F has degraded. Thankfully mine is fine.Even after leaving the app running for several hours some of my numbers were at zero but for the sheer power of changing profiles on the fly and the detailed battery meter this app is AWESOME! Thanks guys keep up the great work. Their website also has some awesome information on debunking the battery myths.Battery for ASUS P42
We’ve also discussed two alternatives to the Windows laptop Battery for ASUS N82JV meter which is something else
you can consider. Do you use something similar? Let us know about it in the comments.Since day one, nothing has annoyed laptop users more than the power consumption that they use and the lack of
supply that manufacturers have come up with. Immediately after purchasing your laptop, you typically get 3-4 hours of battery life from the supplied Battery for ASUS N82JQ if you are lucky. Over the course of a few months, the life slowly dwindles down more and more until you reach
the end. Typically at the end of the warranty, one year, you’re forced to fork out another $100, purchase another battery, and go through the whole process again. Along with the lack of life of
your battery, you get the bonus of the boring and useless Windows Battery for ASUS N82JG meter that has been
included with Windows. It would be nice to maybe have some additional information, or a more accurate calculation of your remaining battery life. So again, with every Windows application, there
is almost always an alternative and I have come up with a couple Windows laptop battery meter replacements to change the included Battery for ASUS N82J icon.
BatteryBar is a simple laptop battery meter that resides in your task bar and is constantly monitoring the Battery for ASUS N82E in your laptop. It not only gives you the estimated remaining time, but it is continually tracking historical data, and is able to calculate the amount of wear you are putting on it. The free version includes everything you need, but there is also a Pro version, which adds certain alerts and additional modifications.If you’d prefer not to eat up any additional real estate on your taskbar, Power Meter Plus might be the other replacement that you’d lean towards. This application sits displayed on your screen, only when your laptop is running off of Battery for ASUS K62JR power. With full power, the power meter sits completely invisible and as the life decreases, the meter becomes more and more prominent. The meter should never get in the way of your work because as you hover your mouse over it, it moves to the left, right, bottom or top of your screen.Battery for ASUS K62J
When you plug the laptop back in, a message streaks across your screen to let you know that you are running off of A/C again.If you’re happy with the provided Windows Battery for ASUS K62F meter, then I would bet that you are in the minority because although it does get the job done, it makes it difficult to know exactly when you are about to ‘die’. You usually end up with the inevitable ‘Going to Stand By…’ message. Try each of these out as a replacement, and I highly doubt you’ll be disappointed. Neither of them eat up a lot of resources and are just another couple more great Windows replacements, in the long line of this category. Battery for ASUS K62
Know of any other Windows battery monitoring apps? How accurate do you think these are?Saving power is one of the major concerns of the modern world. You see cities observing Earth Hours, studies showing how computers consume excess power when kept running and so on. Even if you would view it from your personal perspective, saving power can make your laptop Battery for ASUS K52N last longer and provide longer battery backup.
A laptop with a short Battery for ASUS A8Jp life is a nuisance, especially when you’re on the road and nowhere close to a power socket. To make each individual charge of your battery last longer, learn about the 20 Ways To Increase A Laptop’s Battery Life. What is even more annoying than a drained battery however, is a dying battery. Battery lifetime not only depends on the type of battery and its quality, it also depends on how the Battery for ASUS A8Jr is cared for. In this article I will explain what determines the lifetime of Lithium-Ion batteries, the type of rechargeable battery found in most if not all modern laptops, and what you can do to increase your battery lifetime. Modern laptops are almost exclusively delivered with Li-Ion batteries. They are lighter, offer a higher performance, maintain their charger longer, and are less susceptible to the dreaded memory effect than previous types of rechargeable Battery for ASUS A8Js .
In the US, Li-Ion Battery for ASUS A8Jv is classified as non-hazardous for the environment as they do not contain free toxic metals. In the EU however, vendors are required to recycle at least 25% of the batteries they produce. After all, Li-Ion batteries do contain material worth recycling, although the cost of doing so is rather high. The predominant statement you will find is that new Li-Ion batteries do not require priming. Nevertheless, you should fully charge your Li-Ion Battery for ASUS A8Sr before using it for the first time.Li-Ion batteries have a lifetime of 300 to 500 full charging cycles or up to 2000 partial cycles. There are reports that cycling a Li-Ion battery after long storage periods, i.e. fully discharging and re-charging it for two or three cycles, leads to to capacity gains. Other sources recommend cycling Li-Ion batteries every couple of weeks. Generally, you should not fully discharge your Li-Ion Battery for ASUS F80 .While Li-Ion batteries do not have a memory effect and don’t need to be primed or cycled to maintain full capacity, their lifetime can still be shortened dramatically, if not cared for right. Two things can damage Li-Ion batteries: deep discharges and heat. All of the following battery DOs and DON’Ts are derived from these two major factors.partially discharge and recharge (no memory effect).Battery for ASUS F80Cr
One more thing to keep in mind is that Li-Ion Battery for ASUS F80L begins aging the moment they are produced and there is little you can do to prevent this. What causes the aging is that the electrolyte slowly breaks down the positive plate, causing the internal resistance to increase to a point where no energy can be delivered. A partial charge and low temperatures slow down this process and hence increase the lifetime of yourBattery for ASUS F80Q . Li-Ion batteries are superior to Nickel-Cadmium or Nickel-Metal Hybrid batteries in that they deliver a higher performance, show a much slower self-discharge, and don’t have a memory effect. However, they do age, withstand only a limited amount of charge and discharge cycles, and are damaged by heat. The best thing you can do to preserve Battery for ASUS F8 lifetime, is to store your laptop battery in a cold place whenever you have reliable AC power available. Alternatively, maintain optimal cooling and airflow to decrease heat buildup. Battery for ASUS F8P
ASUS L8 Charger
The F series is the place any dedicated media maven or gamer (who doesn’t mind spending at least $1,100) should look for a Sony machine that suits them. Asus L7200 Charger ， The 16- and 16.4-inch notebooks come with high resolutions of 1600 x 900 or 1920 or 1080 pixels and Blu-ray drives. The CPU options are powerful, quad-core Core i7-2720QM chips, and discrete Nvidia GeForce GT video cards help crunch graphics for intense gaming. Other premium perks include 2 USB 3.0 ports, an HD webcam, and an optional 3D display for cutting edge entertainment junkies.Asus L7300 Charger ， Sony has some of the longest (and most complicated) naming conventions in the industry. Just take a look at one VAIO notebook’s full name: “Sony VAIO VPCCA15FX/W”. Here’s a character-by-character breakdown of what that means.Starting at $730, the Sony VAIO C series will be sold in 14 and 15.5-inch models, and run second-gen Intel Core i5 and Core i3 CPUs and Windows 7 Home Premium. Asus L7B Charger ， Higher-end configurations will have premium features such as Blu-ray drives and discrete AMD Radeon 1GB Hybrid graphics.Available in two colors, Neon Red and Thunder Blue, other nice extras include Intel Wireless Display technology, an HD Webcam and a backlit keyboard. The VAIO C will be available for pre-order starting June 19, and will hit store shelves in July. Asus L7C Charger ， The Neon Red VAIO C will only be available at participating retail outlets (which include ABT Electronics, B&H Photo, Fry’s Electronics, J&R Electronics, MicroCenter, Nebraska Furniture Mart and Sony Stores), while the Thunder Blue version will be available at all other retailers at the same time. Pre-orders will also be accepted at Sony’s web site.Asus L7D Charger
Sony has also refreshed its VAIO E series line of laptops with new models shipping in 14, 15.5, and 17.3-inch screen sizes. Asus L7E Charger ， The 14 and 15.5-inch portables will be available in midnight blue, glacier white, charcoal black and bluish pink. The larger 17.3-inch model will come only in charcoal black or white. All the VAIO E series laptops, however, sport an interesting geometric pattern on their lids and wrist rests that are also fingerprint resistant. Also included on the systems are HDMI ports for HD video output to HDTVs, Asus L7G Charger ， a webcam with face-tracking technology, and Remote Play for PS3, which will let users access content stored on a PS3 over the Internet.Starting at $550, the VAIO E will be available with Intel Core i3 and i5 processors, but one configuration of the 15.5-inch VAIO E will feature an AMD E-350 Dual Core CPU paired with AMD Mobility Radeon HD6130 graphics.Asus L7H Charger
Our multimedia benchmarks certainly made the processor sweat: it produced an overall score of 11, which puts it roughly on a par with a dual-core Intel Atom powered netbook with 1GB of RAM.ASUS L1 Charger ， This surprise result is mainly down to the E-350's lack of Hyper-Threading, which creates two extra virtual cores on some Atom chips. It puts the YB2M1E behind in our multitasking tests, but it was noticeably quicker when a single application was running. Plus, in everyday use, the Vaio was more responsive, particularly when running multiple browser tabs.High definition video played smoothly thanks to the integrated GPU. ASUS L7 Charger ， The Radeon 6310m can also output 1080p content onto an external display using the HDMI port, but it isn’t powerful enough to play modern games at the native screen resolution of 1,366x768. It failed our Dirt 3 benchmark, but older titles should still be playable at a reasonable frame rate if you lower the image quality settings.The Radeon graphics don’t come at the expense of battery life, as the YB2M1E managed a respectable six and three quarter hours in our light-use test. Some netbooks are capable of longer, but this should be enough for most people's needs.ASUS L8 Charger
Once you get the angle of the screen right, Acer Aspire 4740G Battery , however, you'll find reasonably natural colours and good contrast.Performance from the 2.3GHz Core i5-2410M was exemplary, with an overall score of 53 in our benchmarks. Turbo Boost pushes the processor up to 2.9GHz and a score of 71 in the single-threaded image-editing test, while Hyper-Threading doubles the number of threads so it can handle running multiple applications smoothly.Sony has opted for a dedicated AMD graphics chip, the Radeon HD 6470M. Acer Aspire 4920 Battery , his is nowhere near as fast as a desktop graphics card, but a score of 25fps in Call of Duty 4 means it should be able to handle most games, although you'll have to turn the graphical settings down a bit to get playable frame rates. Meanwhile, AMD's PowerPlay technology means that the SB1 will switch to the Core i5's integrated graphics chipset when on battery power. There's also a manual switch above the keyboard, so you can choose between "Stamina" and "Speed" on the fly. Acer Aspire 4920G Battery , If that's not enough advanced technology, the SB1 also has a single USB3 port as well as two USB ports. An HDMI port lets you output both audio and video to a larger screen or home cinema system, and there are two memory card readers, one for Sony's Memory Stick format and one for the more common SDHC cards.At 1.8kg, the SB1 isn't as light as other ultra-portables, but this includes an optical drive that otherwise you may have to carry separately. Acer Aspire 4930 Battery
Its battery life in our light usage test was just over six hours - again, not as long as others here, but still long enough for most trips. A41-M70 , It's great value for all of the features, so it wins our Ultimate award.Sony is a company that's always excelled at creating stylish and small laptops packed with the latest kit, so it's no surprise to find that the new Vaio manages to fit in an optical drive, a full-power 2nd Generation Core i5 processor, a 500GB hard disk and a dedicated graphics card, into a case that's only 26mm thick and weighs just 1.8kg.A32-M70 , The SB1 has a pedestrian, functional design from the outside, with a dark grey, matt-finish magnesium alloy lid. Apart from a headphone port hidden on the rear left corner, all the ports are strung along the right-hand side - a bit inconvenient if you want to use an external, right-handed mouse. The left side holds the optical drive tray, but its Eject button is placed above the keyboard where it's more easily accessible. Acer Aspire 4930G Battery , Opening the lid reveals a minimalist design, with both screen bezel and keyboard panel made from aluminium to keep weight down - and the cool metal is pleasant on your wrists while you type. The keyboard sits in a shallow, concave recess in the metal panel: its keys are isolated and have a comfortable, light action with good feedback for touch-typists.A large touchpad sits underneath. It's smooth and responsive, and includes both vertical and horizontal scroll areas, as well as supporting some gestures such as rotation and zooming.Acer Aspire 4935 Battery
These components make more sense in a less expensive 15in laptop, not in this 17in model. Acer Aspire 4935G Battery , Even though we love Sony’s design there are more powerful laptops, such as the MSI GE620, which cost hundreds of pounds less.We aren’t exactly big fans of netbooks at Expert Reviews. They lack the raw power to handle much more than a Word document or single web browser tab without grinding to a halt. Thankfully, manufacturers are starting to phase them out in favour of slightly larger, more powerful models that are still small and light enough to carry with you. Acer Aspire 5738 Battery , Sony’s refreshed 11.6in Y series is among the first we’ve seen, and if it’s an indication of what's to come, things are looking up.Unlike netbooks, which are usually equipped with Intel’s low-power Atom processors, the Y Series has an AMD Fusion chip. This is an APU (Accelerated Processing Unit) which combines a CPU and GPU in one chip, just like most Intel Core processors. The dual-core AMD E-350 APU runs at 1.6GHz and is paired with a generous 4GB of RAM, which helps with multitasking. Acer Aspire 5735Z Battery , Oddly, Sony has decided to install the 32-bit version of Windows 7, so it won’t be able to access the full amount of memory, but we were happy to see Home Premium rather than the basic Starter Edition that plagues netbooks.Acer Aspire 5735 Battery
No, that’s not a typo, but you’ll have to pay extra for that kind of epic endurance. Acer Aspire 5542G Battery , When equipped with an optional sheet battery ($160) Sony says the VAIO S will last up to 15 hours when equipped with a solid state drive (which also costs more). Still, we like that you can charge the sheet battery separately. The VAIO S also has style, with three color options available: burnished brown, jet black, or platinum silver. Get more details below and check out the gallery. Borrowing some technology from Sony cameras, the new VAIO S Series webcam uses an Exmor sensor that’s designed to deliver better low-light performance. Acer Aspire 5542 Battery , It also includes face tracking technology, so your mug will always be in focus. Other highlights include a backlit keyboard and optional Blu-ray drive.We can’t wait to get our hands on a VAIO S–and that sheet battery–and put them to the test. In the meantime, feel free to peruse the gallery and tell us your favorite color option.Acer Aspire 5536G Battery
Each of Sony’s notebooks carries the name VAIO on the lid, but there’s a wealth of diversity in the manufacturer’s full system roster. Acer Aspire 5236 Battery , What do all those letters and numbers mean? Don’t dive into the company’s pool of laptop options alone. Here’s a guide to each of Sony’s offerings, one mysteriously titled series at a time.Sony’s business netbook is the 10.1-inch M series. Marketed as a supplementary notebook, this system’s hard drive tops out at 250GB, packs a backlit display, and include Sony’s VAIO Care software for system upkeep when the IT department is out of reach. Acer Aspire 5300 Battery， A single 11.6-inch notebook makes up the consumer side of Sony’s Y series. Built for portability, this 3.2-pound machine contains an up-to-date AMD E-350 processor with AMD Radeon HD 6310 graphics, so expect it to handle Hulu and Netflix video streaming as well as light online gaming. It won’t handle other graphically intense workouts such as movie and photo editing. Available in pink and silver.Acer Aspire 5332 Battery
For mobile professionals, there’s the business-league Sony VAIO Y series notebook. Acer Aspire 5335 Battery ， This version carries a 13.3-inch display and weighs 4 pounds. With its low-voltage Intel Core i3 CPU, this notebook is built for on-the-go employees who don’t need tons of processing power but want a system with decent battery life that’s capable of web browsing and light document editing. This 11.1-inch system fits the bill for anyone who needs a travel-ready thin-and-light laptop. Acer Aspire 5516 Battery ， Despite its carbon fiber casing, scratch-resistant display, and aluminum keyboard panel, the X series weighs just 1.6 pounds and is less than .6 inches thin. Its specs are equally on the light side: 64GB solid state drive, Intel Atom NZ550 processor, and integrated graphics. A large-capacity battery offers up an estimated 12 hours of juice.Counted among Sony’s most portable systems, the S series’ four notebooks each sport 13.3-inch screens (1366 x 768 max resolutions) and 3.8-pound frames. Acer Aspire 5517 Battery ， The S series ships with a choice of either 2.3-GHz Intel Core i5 2410M or a 2.7 Core i7 2620M CPU, both of which are second-generation Intel Sandy Bridge chipsets available in many mainstream notebooks. Each system also includes 1 USB 3.0 port, Intel WiDi 2.0 capability for streaming video wirelessly to an HD television, and discrete AMD Radeon HD graphics.Acer Aspire 5536 Battery
At just over 3 pounds, this 13.1-inch system melds portability with function. ASUS T9 Charger ， It’s got built-in GPS, an optional Blu-ray drive, and Sony’s proprietary Share My Connection feature, which turns the notebook into a mobile hotspot that can connect up to 5 gadgets to the web. On top of that, durability features such as a carbon-fiber casing, a scratch-resistant display, and solid state hard drive help extend the Z series’s lifespan.ASUS S8 Charger ， The top of the line laptop in the 15.4-inch business-focused B series includes 6GB of RAM, a 320GB hard drive, and an Intel Core i7 processor. There’s also Blu-ray and an HDMI out port for those moments mobile professionals spend off the clock. Ensuring the notebook survives its life on the road are tough touches such as a spill-resistant keyboard and a protective casing made of magnesium-alloy.In the E series, Sony’s notebooks grow up. ASUS S5N Charger ， Available in 14-, 15.5-, and17.3-inch screen sizes, this line is built for mid-level, everyday computing. Each system includes either Core i3 or Core i5 processors that are good for tasks like web browsing, playing video or music, and editing files with Word or Excel.ASUS S5 Charger
The 14 and 15.5-inch units offer a 1366 x 768 resolution, integrated Intel HD graphics,ASUS S1 Charger ， and a DVD optical drive, but the higher-end 17.3-inch model houses an AMD Radeon HD 5470 graphics card, Blu-ray drive, Intel Wireless Display, and a full HD (1920 x 1080 pixel) display.This 15.5-inch notebook is the budget side of Sony’s business fleet. It features AMD processors and AMD discrete graphic cards, and can include up to 4GB of RAM. ASUS M8 Charger ， There’s little in the way of durable design, but the keyboard boasts a full number pad and the system includes Microsoft Office Starter, VAIO Care software, and HDMI output.Like neon green notebooks? The 14-inch Sony VAIO C series comes in that shade (or Neon Orange). The 15.5-inch version is available in Lightning White and Bolt Black. What the last model lacks in color choice, it makes up for in resolution, 1920 x 1080 pixels to be exact. ASUS M5N Charger ， Thanks to the latest Intel Core i5 processors, AMD Radeon graphics, and an optional Blu-ray optical drive, these notebooks are designed for mainstream notebook users with an eye for media power on the go.ASUS M1 Charger
ASUS N71YI Battery
Now this 30-percent figure is enormously inflated. In fact, the reality is that you will save more like 1-4 percent of your Asus K72JK Battery life with this application. But even scrubbing 1-4 percent more battery life can mean the difference between getting a critical file saved or not. This simple application does this by disabling Aero and the Vista Sidebar when your laptop is running on Asus K72F Battery and re-enabling the items when the machine is plugged back into power. This application is freeware, so you can download it and use it free of charge.
The installation is simple, download the installation binary from the main Web site and double-click the download file. Depending on if you have User Access Control enabled, you will have to allow the installation to continue.During my installation, something strange happened. Near the end of the install it seemed as if the installation stalled. I noticed an icon for Vista Battery Saver Utility was already running in the system tray so I figured I would close it and see what happened. That did the trick. The installation completed, and I was able to fire up the application. Asus K72DY Battery
Obviously the two most power-consumptive applications will be Aero and the Windows Sidebar. If you do not use these by default, you may not see much of a boost in Asus K72DR Battery life by using this application. If you do like to use them but you need to get more battery life, the choice is obvious.Of course, locating the application was not as easy as it should be, because once installed the application was buried in Accessories. Click the name to bring up the configuration window (Figure A).Asus K72 Battery
You will also notice a small icon in the system tray. From this icon you can manually configure both Aero and the Sidebar by clicking the icon and selecting which application you want to act upon. From each submenu you can select Always Deactivate on Battery or Never Deactivate on Battery.Of course, you don’t have to install third-party applications to boost your Vista laptop’s battery performance. If you open up the control panel you will notice an entry for Mobile PC. In the Mobile PC window you will notice six options. ASUS N71YI Battery
Of these, there are two sections to pay close attention to. The first section is the Windows Mobility Center. Here you can adjust:The above settings, when changed in the Windows Mobility Center, are instant changes and do not change if the laptop is running on ASUS N71VN Battery or power. In order to effect change depending upon what is powering the laptop, you need to take a look at the Power Options section and then click on the Change Plan Settings under the Plan you want to change.ASUS N71VG Battery
One of the most effective changes you can make is to adjust the laptop brightness in accordance to what is powering the laptop. Click on Change Plan Settings under the Balanced section (Figure B) where you can modify three very important power-saving options.The most important of the above configurations is the display brightness when running on ASUS N71V Battery . Adjust this as low as you can and still work with your laptop in order to save as much battery power as you can.Now go back to the Power Options and click on Choose What Closing the Lid Does. From here you can choose:We’ll leave out the choices Nothing and Shut Off for now. So the two remaining choices look like this:Sleep: ASUS N71JV Battery
When your laptop is put into sleep mode the display shuts off, the hard drive shuts off, and the current state is saved into memory. This state uses a little bit of energy so your laptop can be quickly woken up by opening the lid. Hibernate: Does the same thing as sleep but uses no power and requires a bit longer to wake up from this state. If you want to conserve as much power as you can, choose Hibernate. If you’re not too concerned or you won’t be leaving your laptop often, select Sleep.ASUS N71JQ Battery
Now back at the Power Options window select Advanced Power Options. In this window (Figure D) you will see a number of options from which to choose. The options that will help you the most are:Maximizing ASUS N71JA Battery life can make or break your off-site work life with your laptop. And with Microsoft Vista there are plenty of options (and third-party applications) available to help you gain enough with your battery life to better make it through your workday. And this doesn’t take into consideration care and feeding of the ASUS N71J Battery itself. Apply these tips wisely, and your laptop will repay you with a little more work.If you use your laptop or tablet on battery power, you’ll know how annoying it is to lose battery power at the “worst time”. While I can’t guarantee your PC will lose power at a more convenient time, I can offer 14 ways to improve your battery life. Learn, in this guide, how to save power when running on batteries.ASUS N71 Battery
1. Turn Down Screen Brightness. To turn down screen brightness, click the ASUS K73SV Battery icon in the system tray and click Adjust screen brightness.Many background applications don’t need to run and only increase CPU cycles and, in turn, the demand on your battery. Here’s a couple of things you can do to cut down on background applications:2a. Disable Windows Sidebar Gadgets. If you don’t use the sidebar, you probably have it disabled already (right click the Windows Sidebar icon in the system tray and click Exit.)If you use the Windows Sidebar, do you really need all your gadgets running when you’re on battery power? To disable Windows Sidebar gadgets:Click the Start button and click Control Panel. ASUS K73S Battery
Type gadget in the top-right search box, and click View list of running gadgets.Many programs like iTunes, Java etc. come with their own auto updating software. These programs frequently communicate with update servers and, collectively, can take a toll on ASUS K73JK Battery life. It’s important to keep software up to date; however, you should consider disabling update checkers for software installed on your PC. Good software lets you disable this behavior when you install it; some software may require a little bit of digging to disable automatic update checking.ASUS K73J Battery
Here’s how to stop Java checking for updates:Click the Start button and click Control Panel. When the Control Panel loads, type java in the search box, and click Java:CDs spinning in drives, external hard disk drives, memory cards in slots, and even a plugged in USB thumb drives all drain power at varying levels. Remove all external drives, cards, and CDs to save ASUS K73E Battery power and the life of your machine. I just added 1GB of RAM to a netbook and I noticed the battery life is quite a lot better. This is because when you run out of memory, application data is written to the hard disk (virtual memory), which requires the movement of mechanical parts and not just electrons alone. By adding RAM to a computer that is always swapping/thrashing, you’ll save a noticeable about of ASUS K73 Battery life. If you want good battery life that spans multiple sessions, consider hibernating your PC instead of putting it to sleep/on stand by mode. Hibernation mode stores all volatile memory on disk and requires less power than leaving volatile memory in RAM for quick access when you turn your PC on. You can easily use a whole Asus 70-NZYB1000Z in two weeks or less of sleep mode, so you could be losing around 10% of battery life each day your laptop is sleeping instead of hibernating (if you’re not using hybrid sleep mode.) For more details on sleep vs hibernate, visit this guide.Asus 70-NZY1B1000Z
Laptops are essential for business. Without the ability to untether yourself from your office, much work would go undone. Parallel to the importance of having a laptop is having a laptop with a Asus K72JU Battery that will last you long enough to get your work done. If you have an updated laptop, more than likely you have Vista running that machine. And if you have Microsoft Windows Vista running your machine, you might notice that your battery isn’t getting nearly the life that the same laptop did when it was running XP. But fret not; there are ways to solve that fast Asus K72JT Battery drainage. Let’s take a look at some methods to optimize your battery power consumption.The Vista Battery Saver is a third-party application that claims to save up to 30 percent of your Vista Asus K72JR Battery life.
Pavilion N6397 Charger
Internal memory has also had a boost. HP Pavilion N6490 Charger , The new MacBook Pros use faster 1600MHz DDR3L RAM. Each has 8GB as standard, but can be configured online to 16GB. If you're considering this, do it when you buy. The chips are soldered onto the logic board, so there's no opportunity to add more RAM after purchase. Indeed, the MacBook Pro with Retina screen is arguably the least upgradeable or repairable notebook around. The solid state drive is non-standard, although third-party replacements might yet emerge, and even the battery is glued rather than screwed into place, HP Pavilion N6490 Charger , making it costly to replace the battery when it dies.There are a few more minor improvements over last year's MackBook Pros. New custom speakers are better placed to offer improved sound, and dual microphones use beam forming to reduce ambient noise while chatting on the integrated 720p FaceTime HD camera.The laptop's fans have asymmetric blades for efficient and near silent cooling. HP Pavilion N6404 Charger , The MacBook Pro with Retina display comes with OS X 10.7 Lion pre-installed, and you get a free upgrade to the forthcoming Mountain Lion when it's released in July. It also includes the iLife suite, namely iPhoto, iMovie and GarageBand.HP Pavilion N6403 Charger
As you'd expect from a high-end Apple notebook, the MacBook Pro with Retina display's major drawback is its price. HP Pavilion N6398 Charger , The cheaper 2.3GHz model costs £1,799 in the UK and $2,199 in the US, with the top-of-the-range 2.6GHz version selling for £2,299 or $2,799. This is a scary amount to pay for a laptop, costing even more than the high-end Samsung 9 Series and other great ultrabooks, although not as much as the 2.7GHz Sony VAIO Z Series. Given the MacBook Pro with Retina display's quality, and its extreme capabilities in pushing around graphics, a high-needs professional photographer, graphic artist or video editor might consider it money well spent.HP Pavilion N6399 Charger , The Apple Mac mini is back with a bang. What with the Cupertino-based company dazzling the tech world with iPhones, iPads and MacBook Airs, the Mac mini seems to be the forgotten child in Apple’s product portfolio. Not any more. With the latest revision of the most inexpensive Mac ever, the mini boasts of improved performance thanks to Intel’s second-gen Sandy Bridge processor and a brand new Thunderbolt I/O port. For more details, keep reading after the break. HP Pavilion N6400 Charger
The Apple Mac mini continues to be made out of a single block of aluminium, much like the MacBook Air. HP Pavilion N6401 Charger , Its unibody single-block aluminium design is much the same as its predecessor, and the Mac mini looks so simple yet so elegant on the desk--not to forget its tiny, solid, and compact form factor. The greatest triumph in the Mac mini’s design is its extremely anorexic dimensions -- 7.75 x 7.75 x 1.41 inch. It is amazing to think Apple has crammed in so much in so little space with the Mac mini 2011.All the connectivity ports on the Mac mini are relegated on its back panel, and its bottom panel can be easily turned anti-clockwise to gain access to the mini computer’s RAM and Wi-Fi modules -- servicing the hard drive requires screwdrivers and a lot of patience. HP Pavilion N6402 Charger
But we have no complaints on the Apple Mac mini’s constitution. The Apple Mac mini comes with decent hardware: a second generation Sandy Bridge 2.3-GHz Intel Core i5 processor, 2 GB of DDR3 RAM (can be bumped up to 8 GB later), 500 GB 5,400 rpm hard drive, and for the first time an AMD GPU -- the AMD Radeon HD 6630M, along with an onboard Intel HD 3000 graphics. It’s the best hardware we’ve seen on the mini, and Apple sells another version of the mini that comes with even better hardware specs (head over to www.apple.com/in). ASUS F3E-AP073C Battery
In terms of bundled features, there are two main talking points on the new Apple Mac mini. ASUS F3F Battery , First, there’s no optical drive on or bundled with the Mac mini -- what with Apple now allowing OS X 10.7 Lion re-install through recovery partition and USB sticks. But yes, you’ll need an external DVD writer to install an older program, which adds to the cost. Also the entry-level Mac mini comes with just 2 GB of RAM, which is adequate for the time being but doesn’t really future-proof the product for a longer duration. ASUS F3F-AP007H Battery , We expect that sooner or later, you will have to bump up the RAM.All its connectivity ports are accessible on one horizontal panel at the Mac mini’s behind. The biggest talking point here is the inclusion of a Thunderbolt port, now standard across all Apple’s Mac offerings, which helps connect an external display capable of 2560x1600 pixel resolution. You’ll also find four USB ports, HDMI, SDXC card slot, microphone and headphone jacks. ASUS F3F-AP010H Battery , There’s also a FireWire 800 port present on the Apple Mac mini, doubtless for legacy products. Wireless communication protocols like Wi-Fi 802.11n and Bluetooth are also included, so is an HDMI to DVI converter. Overall, we find the offering of connectivity ports and internal hardware on the Mac mini to be adequate for an HTPC or an average mini computer. Anything more, and you’ll have to juice it up.ASUS F3H Battery
The first generation Apple MacBook Air launched back in 2008 won universal acclaim for its slim design but the device lacked good hardware chops. ASUS F3H AP003C Battery , Three years on and the slimmest, smallest MacBook Air ever borrows the same svelte design from its predecessor but now packs a powerful performance punch with the new Sandy Bridge Intel Core i5 processor, 4 GB of RAM and a 128GB of SSD. The Cupertino based company offers two more variants - a cheaper model featuring the same Core i5 processor but with 2 GB of RAM (upgradable to 4 GB) and 64 GB SSD or a higher end model featuring a Core i7 with 4 GB of RAM and 256 GB SSD. ASUS F3H AP005C Battery , Let’s see what else is new with the 11-inch MacBook Air. The biggest change on the Apple MacBook Air comes in the form of the system’s internal hardware. The device is now powered by Intel’s new Sandy Bridge Core i5-2567M processor running at 1.6-GHz. An additional 4 GB of RAM, in-built Intel HD Graphics 3000 and 128GB SSD completes the basic spec sheet. ASUS F3H-AP041C Battery , The 11-inch screen has a native resolution of 1366 x 768; we have absolutely no complaints here as the screen is quite bright and boasts of better-than-average viewing angles.
A major disappointment of the MacBook Air -- or for that matter any ultra-thin laptop standing a few millimetres tall -- is its lack of connectivity ports. ASUS F3J Battery , The 11-inch model gets only two USB 2.0 ports, one each on either side. A MagSafe power port, a headphone jack and a microphone fill the left side of the device, while just a Thunderbolt port along with the aforementioned USB 2.0 port fills the right side. Wireless connectivity is taken care of by Wi-Fi b/g/n and Bluetooth 4.0. As is evident, the 11-inch MacBook Air is one for the truly mobile consumer.ASUS F3Ja Battery , The Thunderbolt port is one of the biggest additions to the new MacBook Air line up, with transfer speeds shooting upto 10 Gpbs i.e. 20 times faster than a USB 2.0 it is definitely a boon to have it up your sleeve. In time, the number of peripherals that utilize the technology will only go up.ASUS F3Jc Battery
The Trackpad supports a whole list of multi-finger gestures that are now incorporated on the Mac OS X 10.7 Lion operating system which is bundled natively with every new MacBook Air. ASUS F3JF Battery , You might take sometime to remember each of these gesture based commands but once mastered it saves a lot of time while doing various tasks and the experience becomes highly intuitive.Another biggie is the inclusion of backlight for the keyboard. Not only do the keys light up but also the labels on the keys come to life. What’s more, the MacBook Air features an ambient light senor that automatically adjusts the brightness of the display as well as the keyboard. ASUS F3Jm Battery , Working in the dark never seemed better, the backlighting works like a charm. The new MacBook Air doesn’t see a lot of change in terms of its design. It is as thick as 0.11-inch at its thinnest point and 0.68-inches at its thickest. It weighs a mere 1.08 kg. What has changed though is the keyboard, whilst the key placements remain same, the keyboard sees new tag for the F3 and F4 buttons that display the new features of the Mac OS X Lion. ASUS F3Jp Battery , Further, the F5 and F6 button helps you control the backlighting of the keyboard.ASUS F3Jr Battery
The 11-inch MacBook Air’s trackpad is big and very responsive; the clickable buttons are easy to press and subtle with their sound. ASUS F3Jv Battery , The full sized keyboard offers great tactile feedback and the spread out chiclet style keys make typing blazing fast. Further, the Apple MacBook Air gets the plush palm rest as seen on the bulkier MacBook Pro making typing a much nicer affair. Though the display lid is extremely thin the aluminium shell makes it rigid; no way does it feel fragile. The uni-body aluminium chassis gives the device a very sturdy build. ASUS F3Ka Battery , Quality of both webcam and mics are respectable, but pale in comparison to the new speakers. Apple spent a fair amount of time talking about the re-engineered speakers in the new MacBook Pro, and for good reason: they sound great. Music, movies, Internet content, games - they all sounded outstanding. They lack a bit in the bass department, which isn't news to most laptop owners.ASUS F3Ke Battery , What is most surprising about the speakers is their ability to project without distortion. They can get unexpectedly loud, but whatever they broadcast remains crystal clear. It's a nice change.
Naturally, more and more software will be Retina-optimised over time. HP Pavilion N6000 Charger , OS X 10.7 Lion and its bundled applications are optimised already, as are iPhoto, iMovie and, of course, Aperture. New versions ofPhotoshop and AutoCAD are in the pipeline, and no doubt games developers will want to get the most out of the new display too. Diablo 3 has already been optimised - we hope more will follow. As well as the Retina resolution, the display also benefits from a revised design. HP Pavilion N6100 Charger , The LCD glass is now directly integrated into the unibody casing, with the cover glass dropped. This gives 75% less reflection, and 29% better contrast. It's also thin. Very thin. The new MacBook Pro with Retina display is 25% thinner and 1.1lbs lighter than the 15-inch late 2011 MacBook Pro. It's even slightly lighter than the 13-inch last generation MacBook Pro, and almost as thin as the MacBook Air. HP Pavilion N6190 Charger , A few changes had to be made to accommodate this ultra-thin form factor. The MagSafe power connector has been slimmed and renamed MagSafe 2; adaptors are available if you want to use your old power supply units or the Thunderbolt display. See the new Retina-ready MacBook Pro side by side with the 2011 version, to compare:HP Pavilion N6195 Charger
The Ethernet and FireWire 800 ports proved too big to include, but Apple has released adaptors that fit the notebook's two Thunderbolt ports. HP Pavilion N6395 Charger , The SDXC card reader is retained and an HDMI port has been added, and the two USB ports are now USB 3.0. Like the similarly-thin MacBook Air, the new MacBook Pro with Retina display dispenses with the optical drive, and uses solid state storage instead of a hard drive. Being a high-end luxury laptop, with prices starting at £1,799 in the UK and $2,199 in the US, the MacBook Pro with Retina display also boasts some impressive specifications.The mid-2012 refresh of Apple's laptops brought us six new MacBook Pros; HP Pavilion N6396 Charger , two 13-inch models, two 15-inch versions and two with 15-inch Retina displays. It's the latter we're interested in here. The cheaper of the two Retina MacBook Pros features a 2.3GHz quad-core Intel Core i7 processor, with the top-of-the-range model running at 2.6GHz. These are new Intel Ivy Bridge processors, the third generation Core iX chips.HP Pavilion N6397 Charger
Like their predecessors, they can HyperThread, running two threads on each of their four cores. HP Pavilion dv8200 Charger , When demand for processor power is great, they can reallocate unused resources to temporarily increase their running speed.Under Turbo Boost, the chips used in the MacBook Pro with Retina display can reach speeds of 3.3GHz and 3.6GHz respectively. Buy the high-end model from the Apple Store online and you can upgrade to a 2.7GHz processor (3.7GHz under Turbo Boost) as a custom option. HP Pavilion dv8100 Charger , The new Ivy Bridge chips feature improved integrated graphics. The new built-in Intel HD Graphics 4000 chipset is pretty powerful in its own right, but when needs are high, graphics processing automatically switches to the discrete GPU, an Nvidia GeForce GT 650M with 1GB of GDDR5 memory. The new graphics chip increases performance by up to 60% over the previous generation, which is just as well considering the number of pixels it has to drive. HP Pavilion dv8000t Charger , In fact, it's powerful enough to simultaneously support full native resolution on the built-in display, and up to 2560 x 1600 pixels on two external screens. Given the ultra-thin form factor, an internal hard drive isn't an option. Instead, both MacBook Pro with Retina display models have solid state storage - 256GB and 512GB, respectively. Although you can upgrade the pricier model to 768GB on the Apple Store online, the less expensive version can't be upgraded at all, which seems a little spiteful.HP Pavilion dv8000 Charger
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Media playback and editing, in particular, are not served well by the Samsung Series 5 Chromebook's underpowered integrated graphics. Battery for Samsung RV420E , Even with the changes to Chrome OS that make it behave more like Windows or Mac OS X, it's still a limited operating system compared to the full fat operating systems. Apps are downloaded and installed from the Chrome Store, and while it's growing daily with plenty of apps, there's still a scarcity of apps that offer the depth and complexity of traditional desktop applications. This means that despite the advancements, the Samsung Series 5 Chromebook is still a device that you'd only want to use for quick web-based tasks. Anything heavier and you'll want a standard laptop or desktop computer.Battery for Samsung RV420I , So without being able to recommend the Samsung Series 5 Chromebook as your only computer, does it do enough to warrant you buying it to go alongside your existing laptop, desktop or all-in-one? Sadly, not. While it's certainly well built, the form factor isn't as convenient or as easy to carry as the Chromebook's chief competitor: tablets. ASUS F2Je Battery , While Chrome OS has been improved, it's not as powerful as the iPad's iOS, or that other Google operating system, Android. Has Google itself made the Chromebook obsolete with its Google Nexus 7 tablet?Battery for Samsung NP-RV420
The 10.1-inch screen has a fairly thick bezel and can only manage a pixel resolution of 1,024 x 600.ASUS A9W Battery , However, it's bright and detailed enough to entertain you with a movie while you're cramped onto a train, plane or automobile - precisely what these machines are designed for. And, because it manages a staggering 354-minute battery life, you'll still be watching long after regular laptops have given up and died. There's a sizable 320GB hard drive on board to fill with media and documents, but obviously no optical DVD drive. ASUS F2 Battery , You do however have plenty of connectivity to boost the Eee PC 1025 with accessories. There's three USB ports, HDMI and VGA connections as well as an Ethernet port in case you don't want to use the 802.11n Wi-Fi.The Asus Eee PC 1025 runs on an Intel Atom processor and 1GB of RAM. The Atom processor is Intel's low-powered alternative chipset and helps to keep power consumption down, the caveat is that performance is limited - especially with only 1GB of memory.ASUS F2F Battery
But, considering the value of this machine and that it's meant for only the most basic of tasks - watching films, ASUS F2Hf Battery , browsing the web and using office documents, this isn't much of a problem. Asus has included a few first-party software programs such as Asus Media Sharing and Asus Vibe Fun Centre that helps you organise and share your media. ASUS F2J Battery , And you've also got the basic Windows package that includes Office 2010 Starter, Movie Maker, Live Mail and others. If you're looking for a basic portable machine but don't fancy a tablet then a netbook is the way to go. The Eee PC 1025 is an excellent choice: the battery life is impressive and the usability grows on you after a while. ASUS F3E Battery , It's got an impressive range of connections and a decent screen and will serve well as a secondary machine or travelling alternative to your main device.ASUS F3 Battery
Chromebooks such as the Samsung Series 5 Chromebook XE550C22 - and the Chrome OS operating system they run on - are worthy innovations, but so far have fallen short of our expectations. Battery for Samsung AA-PBOTC4T , The idea of a laptop that's so streamlined for browsing and working on the web that it boots in seconds and can run all day off a single battery charge is certainly appealing. Google's Chrome web browser is a fast, light and versatile program for accessing the web. Building an operating system around it, while integrating many of Google's cloud services such as Google Docs, was a great idea. So Chromebooks had the potential to succeed where netbooks failed, and even maybe take on the might of the increasingly popular tablet.Battery for Samsung AA-PB8NC6W
However, as we've seen with Chromebooks such as the Acer AC700 and Samsung's early Chromebook, the results have so far been rather disappointing.Battery for Samsung AA-PLOTC6M , Early versions of the Chrome OS had their flaws, especially when it came to the playback of media, which would often stutter, or not play at all. Having a whole operating system in a web browser that took up the entire screen also made multi-tasking and other tasks we take for granted in desktop-based operating systems such as Windows 7 much more difficult. Battery for Samsung AA-PLOTC6P , The hardware that was supporting Chrome OS didn't help, either. Just because a laptop is streamlined, doesn't mean it has to be underpowered. Yet many of the early Chromebooks came with paltry RAM and integrated graphics and hardly any internal storage, which made using them sluggish and frustrating. Finally a laptop and operating system that stores everything on the web is only as good as your internet connection - so if you weren't able to access a wireless network, the Chromebook would be all but useless.Battery for Samsung AA-PLOTC6L
The Samsung XE550C22 Chromebook has a big mission in front of it, then.Battery for Samsung AA-PL2VC6B-E , It needs to overcome the failings of past Chromebooks and prove to those of us who have been left unimpressed with what we've seen so far that Chromebooks and the Chrome OS are relevant. It's certainly a tall order, but can it succeed? Oh, and it needs to persuade us that the price of £379 in the UK or $499.99 in the US for the Wi-Fi version - or £429/$549.99 for the 3G version - for a laptop with 4GB RAM, instant boot and a novel new approach is worth the risk of removing the safety net of Microsoft Windows.Battery for Samsung AA-PL2VC6B , The Samsung Series 5 Chromebook XE550C22 has been given a hefty upgrade compared to the specifications of other Chromebooks. While on paper its 4GB of RAM seems a bit like overkill, considering what Chromebooks are designed for, it's a welcome addition. The Chrome OS operating system - and the Chromebook as a whole - feels a lot more sprightly with the added RAM, running tasks much faster. Battery for Samsung AA-PB3VC6B-E , A 16GB SSD hard drive keeps things fast as well. Of course, it's a lot smaller than hard drives found in laptops, but the main idea of a Chromebook is that the majority of your documents and files are stored online in a cloud service.Battery for Samsung AA-PB3VC6B
An SD port enables you to pop in a memory card for more space. Battery for Samsung AA-PB3VC3B , There are two USB ports as well, and as with previous Chromebooks, inserting a USB flash drive will automatically open up a new tab in Chrome with the contents of the USB drive displayed.The interface of Chrome OS has been improved, making browsing files a lot more pleasant, and not such a culture shock if you're used to Windows as your operating system. One of the most important things to remember is that rather than windows opening on your desktop and containing files or programs, Chrome OS uses tabs instead.Battery for Samsung AA-PB2VC6W-B , So a USB drive with files on it is accessed in a similar way to a webpage. It takes a little getting used to, but once you become accustomed, things start to click into place. Probably the most important specification of the Samsung Series 5 Chromebook, and one that's missing from earlier Chromebooks, is 3G functionality (on the more expensive 3G version, not on the cheaper Wi-Fi-only model). Plug in a SIM card with a mobile internet data contract and you're able to browse the internet while out and about - without having to depend on Wi-Fi networks.Battery for Samsung AA-PB2VC6W
This dramatically increases the usefulness of Chromebooks, Battery for Samsung AA-PB2VC6B , because before if you were away from your home Wi-Fi network, or not able to connect to a free Wi-Fi hotspot, then you'd be unable to access any files or services on the cloud. Computing on the Samsung Series 5 Chromebook XE550C22 via a 3G signal is far more flexible. Of course, if you find yourself in one of the 3G blackspots that are sadly still common - especially in rural areas - then Chromebooks are still going to be rather limited. It's also worth remembering that a SIM card isn't included with the Samsung Series 5 Chromebook, so you'll need to sign up with a mobile operator and get a contract or pay as you go data plan. Battery for Samsung RC512 , This is an extra cost you need to factor in, although there are some good deals to be had - giffgaff offers some excellent data deals, for example.Of course, with 3G mobile internet you're not going to be wanting to use it abroad, lest you enjoy getting humongous phone bills. There's also the fact that while 3G is an improvement on previous mobile internet technology, it's still rather slow, so streaming TV shows is a no-no. Battery for Samsung NP-RC512 , The 3G-only Samsung Series 5 Chromebook won't benefit from the far faster speeds of 4G internet either, in the US or when 4G eventually comes to the UK. However, with a 12.1-inch LED screen, you'll hear no complaints from us about image quality - the screen is bright, crisp and a pleasure to gawk at.Battery for Samsung RC720
Support for 802.11a/bg/n wireless networks is also very good, especially if you have a wireless N router, so you can take advantage of the increased range and speeds of the newish wireless standard.Battery for Samsung NT-RC512 , 'Newish?' we hear you ask - that's because the wireless 802.11ac standard is rolling out as we speak, with a much increased speed and range. As with the lack of 4G, the Samsung Series 5 Chromebook XE550C22 isn't crippled by the absence of wireless AC, but it's not as future-proof as you'd want from such a potentially innovative product. Especially one so reliant on the internet.While many of the specifications we've mentioned are great in theory, a lot of the Samsung Series 5 Chromebook's success relies on the new and improved Chrome OS. Battery for Samsung NT-RV415 , The revamp includes a more desktop-like experience, with icons for your favourite apps displayed on a desktop wallpaper of your choosing. It looks good and works well at helping users from traditional operating systems acclimatise to the Chromebook's way of doing things.Battery for Samsung NP-RV415
As you'd expect from a Chromebook running a light operating system from a speedy solid state drive, Battery for Samsung RV415 , the Samsung Series 5 Chromebook XE550C22 boots up in a matter of seconds, and after logging in you can dive straight into browsing the internet. The boosted hardware inside this Chromebook gives it a much sprightlier and smoother feel as you're browsing the web and running apps. However, we still experienced playback problems when running high definition video, both from a USB stick and streaming it online. Battery for Samsung NP-RV420I , While a Chromebook isn't ever going to be an all singing, all dancing media machine, it's disheartening to see a product this new - and at this price (£379 in the UK or $499.99 in the US for the Wi-Fi-only model, or £429/$549.99 for the 3G version) - struggling with 1080p video. Apart from that, things have certainly been tightened up. When we used the first generation of Chromebooks we were dismayed at the lack of support for certain file types. Not knowing if your Chromebook was able to open or play a file resulted in an extremely hit and miss, not to mention frustrating, experience.Battery for Samsung NP-RV420E
Added support for most of the popular formats is a very welcome addition, and makes the Chromebook far more enjoyable to use. Battery for Samsung NP-RC720 , Battery life is pretty decent, with about six hours of heavy use, although considering the specs we were hoping for quite a bit longer. It's slim, light and looks great though, so you'd have no problem taking it around with you.Overall, the Samsung Series 5 Chromebook XE550C22 is a big leap forward for Chromebooks, and is easily the best Chromebook we've reviewed.Battery for Samsung NT-RC720 , Of course, the previous generation of Chromebook was rather disappointing, so that's not saying too much. Improvements in both the hardware and Google's Chrome OS software are very welcome, and make using the Samsung Series 5 Chromebook XE550C22 much more enjoyable. There are still some flaws, though. The improvements to Chrome OS, alongside extra RAM and processing power, make the Samsung Series 5 Chromebook much more desirable. You can really begin to see the promise of Chromebooks.Battery for Samsung RV420
Business class computers are designed to reflect and support companies' critical reliability and performance needs. If you're buying a laptop or desktop PC to make money (i.e., for work), invest in one designed for business users and the investment should pay off in terms of better reliability, easier troubleshooting, and more professional features. If you find a consumer model that you're interested in, check if the manufacturer offers a similar model in its business division.Question: If I remove the Charger for Dell XD187 & run from a power source will it lengthen battery life? Answer: Laptop batteries have finite life spans. Whether you use the power cord or remove the battery it will lengthen the life of the battery.Li-Ion laptop Charger for Dell XD186 lifespan is approximately 1,000 charge cycles, or 2-4 years under normal operating conditions.Keeping the battery in a cool place can prolong its life but not in a period of extended storage. The Li-ion battery should be stored at 40 percent rather than full-charge state.The battery ages even if not used. For best results, keep the Charger for Dell XD184 cool. In addition, store the battery at a 40 percent charge level. Never fully charge or discharge the battery before storage. The 40 percent charge assures a stable condition even if self-discharge robs some of the battery's energy. Most Charger for Dell UD535 manufacturers store Li-ion batteries at 15°C (59°F) and at 40 percent charge.
Keeping a laptop battery on constant charge and never using it is not good for the laptop Charger for Dell TD612 . Run the battery down and recharging it at least once every month.Question: If I remove the battery & run from a power source will it lengthen battery life? Answer: Laptop batteries have finite life spans. Whether you use the power cord or remove the Charger for Dell TD429 it will lengthen the life of the battery.Li-Ion laptop battery lifespan is approximately 1,000 charge cycles, or 2-4 years under normal operating conditions.Keeping the battery in a cool place can prolong its life but not in a period of extended storage. The Li-ion battery should be stored at 40 percent rather than full-charge state.The battery ages even if not used. For best results, keep the battery cool. In addition, store the battery at a 40 percent charge level. Never fully charge or discharge the Charger for Dell HD438 before storage. The 40 percent charge assures a stable condition even if self-discharge robs some of the battery's energy. Most battery manufacturers store Li-ion batteries at 15°C (59°F) and at 40 percent charge.Charger for Dell KD186
Keeping a laptop battery on constant charge and never using it is not good for the laptop Charger for Dell 312-0416 . Run the battery down and recharging it at least once every month.Regular laptops have been designed to work within a safe temperature range - normally 50 to 95 degrees F (10 - 35 degrees C). This range refers both to optimal usage temperature of the outside environment and the temperature the laptop should be warmed to before using. Protecting your laptop from cold weather is important and you should know how to protect your laptop from cold weather. Charger for Dell 312-0366
Protect yourself and your laptop from the damage cold weather can cause. 1. Ruggedized Laptops If your budget allows, purchase or lease a ruggedized laptop if you will be outside in cold temperatures for extended periods of time. Ruggedized laptops have been designed to work under extreme weather conditions. When you rely on your laptop and can't count on the weather to co-operate - a ruggedized laptop is worth considering. Most ruggedized laptops have been tested according to MIL-STD-810F standards.2. Careful StorageCharger for Dell PU556
Never leave a laptop, even in a well-padded and insulated laptop case in the trunk of vehicle in cold weather. The laptop could freeze and you lose all data contained in it.
3. Let It Warm Up
Once you bring a laptop in from the cold - allow it to warm up to room temperature before booting. The same is true when you go outdoors - allow the laptop to acclimatize to the outside temperature before booting up.
4. Incorrect Warming Methods
Do not use devices such as mug warmers or pocket warmers to heat or keep a laptop warm. They are not designed for this purpose and can create problems as they will not heat or keep a laptop warm in the right way. They could heat the wrong parts of a laptop or cause it to generate too much heat and melt internal components.Charger for Dell Inspiron 13
5. Laptop Warmers
There are laptop warmers designed specifically for the purpose of keeping a laptop warm and these are what you should use. Laptop warmers have been tested to ensure they will safely protect your laptop and are a wise investment.
6. Excessive Heat Build-Up
Do not use your laptop while it is still inside a laptop bag. There is no room for air to circulate and you will get heat build-up. You can create your own "box" for your laptop which will allow air to circulate and provide an enclosed area for you to use your laptop. Having the laptop on a raised platform for your laptop within the box will aid in airflow. This laptop box will help keep the laptop warmer as cold air is blocked and the heat generated from the laptop is kept in the box.Charger for Dell Inspiron 1318
7. Protecting Your Display
Don't use heating pads or other external sources of heat to warm up or thaw a laptop display. Allow the display to warm on its own and do not boot up a laptop if you suspect the display is frozen.
8. Stay Out of the Cold
Whenever possible stay out of direct exposure to cold weather conditions by staying in a vehicle, inside a building or other type of shelter. Protecting your laptop from excessive dampness or wet from snow will keep your keyboard from freezing and other problems from developing.9. Change Power Settings
By changing the power settings from power save mode will help keep the laptop warm as it continues to run. Instead of having the hard drive shut down, keep it spinning. The longer the laptop can be kept left running, the warmer it will stay as it generates its own heat.Charger for Dell Inspiron 1420
10. Don't Get Creative
Last but by no means least - do not create your own devices to keep your laptop warm! This is especially important if you are using a company owned or leased laptop. You will be responsible for any damage caused and will have to have it repaired or replaced at your own expense.Deciding which laptop to buy can be tough, with hundreds of laptop models to choose from and prices ranging from under $200 for netbooks to over $2,000 for high-end laptops. In addition to your budget, the kind of work and play you plan on doing on your laptop should help you narrow down your choices. Here are some tips for making a wise laptop purchase.Charger for Dell Vostro 1400
How to Select the Best Laptop for Your Needs
1. Consider your operating system. You have more choices with Windows laptops, but Apple's MacBook Pro and MacBook Air laptops can also run Windows, which makes these laptops attractive for their versatility. However, Apple's laptops are much pricier. If you're considering this age-old debate between Mac or PC laptop, think about how much you really want to spend (see below) and whether you need a laptop with features (Blu-Ray, touchscreen, TV tuners, etc.) not available on the few variants Apple offers.Charger for Dell Inspiron 6400
2. Start with your budget.
Netbooks are the cheapest and smallest type of laptop, and you can actually use them for business, but they're very underpowered and limited, and also getting replaced by tablets and more powerful laptops shrinking in size and weight. You can get a budget laptop, good for most basic tasks like web browsing and word processing, these days for under $500 (even much less during sale holidays like Black Friday and Cyber Monday); these laptops sometimes use older processors and often come in the 15.6" display size. Generally, the smaller and thinner you want your laptop to be, the more you'll have to pay for it.Charger for Dell Inspiron 1501
If you have a couple of hundred more to spend (between $600 and $1000), you can get a thin-and-light laptop (4 to 6 pounds and 14-inch to 16-inch displays), with better performance: the latest
generation processors, a sizable hard drive of 500 GB or more, and more memory. Thin-and-lights are probably the most common types of laptops being sold (and bought) today. For $1,000 or more,
you can opt for either a sleek ultraportable laptop--light in weight, and very thin, with screen sizes 13-inch or less--or go the other way, for desktop replacement laptops or gaming
laptops--heavy in weight and with giant 17-inch screens.Charger for Dell Inspiron E1505
Learn more about laptop types.
HP F1739B Charger
This cost is, to a large extent, governed by the number of charge/discharge cycles the Battery for IBM ThinkPad A31P can endure. The low costs of nickel-cadmium can only be achieved by applying a full discharge once every 1-2 month as part of a maintenance program to prevent memory. If omitted, nickel-cadmium is on par with nickel-metal-hydride and lithium-ion in terms of cycle life. Lack of maintenance would increase the cost three-fold. Environmental conditions, such as elevated temperatures and incorrect charging, reduce the expected Battery for IBM ThinkPad R32 life of all battery chemistries. The calculated cycle life is based on best cases.
By far the lowest cost per kWh is lead-acid for wheelchairs and scooters. Running a laptop off a large lead-acid Battery for IBM ThinkPad R40 would reduce the energy cost twenty fold. This, however, would be a hard sell.Figure 3 compares the energy cost to generate 1kW of energy from the primary AA alkaline cells, a nickel-cadmium pack, a combustion engine used in a midsize car, fuel cells and the electrical grid. The cost estimation takes into account the initial investment, fuel costs where applicable and eventual replacement of the systems. The fuel cell offers the most effective means of generating electricity but is expensive in terms of cost per kWh. Fuel cells, as a Battery for IBM ThinkPad G40 replacement, will only become economically viable once such units are available in compact design at a reasonable price. Fuel cells for stationary applications are still more expensive than diesel. The least viable application in terms of cost is fuel cells for vehicles. The internal combustion motor, as we know it today, is hard to beat. According to the US Department of Energy, hydrogen is four times as expensive as gasoline and the fuel cell is ten times as expensive to build as a gasoline engine. Incentives other than cost may be needed to entice motorists to switch to the environmentally friendly fuel cell.Battery for IBM ThinkPad G41
The lowest cost per kWh is electricity from the grid. The energy can be generated in remote locations. The transportation maintenance and costs are relatively low. All costing information is based on current estimates and assumptions.Battery for IBM ThinkPad R50 manufacturers are tooling up for the electric vehicle, but what would happen if it failed? Could there be a déjà vu of the fuel cell in the 1990s, or the bio fuels in the last decade? The US Department of Energy (DOE) has admitted that some critical parameters of Li-ion are not met. Newer NiMH batteries, which are cheaper and safer than Li-ion, are also suitable for the electric powertrain but these mature systems are often excluded from government grants for research. Battery for IBM ThinkPad R50E
There are no ideal contenders for the electric powertrain, and lithium-ion remains a good choice. Out of the five candidates illustrated in Figure 1, Li-nickel-manganese-cobalt (NMC), Li-phosphate and Li-manganese stand out as being superior. The popular Li-cobalt (not listed) used in consumer products was believed to be not robust enough; nevertheless, this high energy dense “computer battery” powers the Tesla Roadster and Smart Fortwo ED. The compromises are in safety, energy density, cost and temperature performance. HP F1739A Charger
Note: The further the shapes extend outwards on the axis, the better the HP F1739B Charger will be. With special permission from the Boston Consulting Group (BCG), ©2010The above table compares batteries in terms of safety; specific energy, also known as energy density or capacity; specific power, or the ability to deliver high current on demand; performance, the ability to function at hot and cold temperatures; life span, which includes the number of cycles delivered as well as calendar life; and finally cost. The figure does not mention charge times. All batteries offered for EV powertrains can be charged reasonably fast if a suitable electrical power outlet is available. HP F1753-60978 Charger
A charge time of a few hours is acceptable for most users, and super-fast charging is the exception. Nor does the table reveal self-discharge, another Compaq 336962-001 Charger characteristic that needs scrutiny. In general, Li-ion batteries have low self-discharge, and this parameter can mostly be ignored when the battery is new. However, aging when exposed to heat pockets can increase the self-discharge of the affected cells and cause management problems. Among the EV battery candidates, Li-phosphate exhibits a higher self-discharge than the other systems.None of the five Compaq 337607-001 Charger candidates in Figure 1 show a significant advantage over others, and the size of the spider fields are similar in volume, although different in shape. Focusing on one strong attribute inevitably discounts another. NCA, for example, has a high capacity but presents a safety challenge, whereas Li-phosphate is a safer system but has lower capacity. Compaq 337607-002 Charger
In the absence of a clear winner, car manufacturers include peripherals to compensate for the deficiencies. Compaq PP2080 Charger manufacturers in turn assist by custom-designing the cell to strengthen the important characteristics needed for the application. Here is a brief summary of the most important characteristics of a battery for the electric powertrain.
Another limitation of Battery for LENOVO L08S6DB propulsion over fossil fuel is the fuel by weight. While the weight diminishes as it is being consumed, the battery has the same deadweight whether fully charged or empty. This puts limitations on EV driving distance and would make the electric airplane impractical. Furthermore, the combustion engine delivers full power at freezing temperatures and continues to perform well with advancing age, a trait that is not achievable with the Battery for LENOVO L09L6D16 .Table 1 estimates the storage capability and cost per kWh of primary batteries.Improved runtimes, lower unit price and the convenience of recharging have shifted many portable applications previously reserved for primary batteries to rechargeable batteries.
Table 2 compares the cost of power with rechargeable batteries. A Battery for LENOVO L09N6D16 that is a few years old may deliver only half of the rated capacity. Energy from non-rechargeable batteries is most expensive in terms of cost per kilowatt-hours (kWh). Primary batteries are used for low-power applications such as wristwatches, remote controls, electric keys and children’s toys. Military in combat, light beacons and remote repeater stations also use primaries because charging is not practical. Battery for LENOVO L09S6D16
The cost is based on Battery for LENOVO L10L6Y01 price and the number of possible discharge/charge cycles. The analysis does not include electricity for charging or the cost of purchasing and maintaining charging equipment. The table compares commercial battery packs used for communications, computing or medical devices.With dwindling fossil fuel supply, governments and the private sector are studying alternate energies. Table 3 compares the cost to generate 1kW of power by taking into account the initial investment, adding the consumption of fuel and including the eventual replacement of the system. Battery for LENOVO L10N6Y01
Power from the electrical utility grid is most cost-effective; consumers in industrialized countries pay between $0.05 and $0.25US per kWh. (The typical daily energy consumption per household is 25kW.) Gasoline (and equivalent) is the most economical portable fuel.The table includes the initial investment, fuel consumption, maintenance and eventual replacement of the equipment. The figures are estimates at the time of writing.Battery for LENOVO L10S6Y01
The fuel cell is most effective in converting fuel to electricity, but high equipment cost makes this power source expensive in terms of cost per kWh. In virtually all applications, power from the fuel cell is considerably more expensive than from conventional methods. We now look at the energy that our bodies consume. An active man requires 3,500 calories per day to stay fit, which relates to roughly 4,000 watts in a 24-hour day (1 food calorie = 1.16 watt-hour). Traveling on foot covers about 40km (25 miles) per day and a bicycle increases the distance by a factor of four to 160km (100 miles). Eating two potatoes and a sausage for lunch can propel a bicyclist for the entire afternoon, covering 40km (25 miles), as I have experienced myself. The human body is amazingly efficient in converting food to energy.Battery for LENOVO 51J0497
Table 4 compares the energy per passenger/kilometer for a loaded Boeing 747, the retired Queen Mary ocean liner, a gas-guzzling SUV, a fit person on a bicycle, and a person walking on foot. The figures are estimated.In terms of high-speed transportation, air travel consumes theleast amount of energy per passenger-km. The boat is efficient for slow and heavy freight. The absolute lowest energy consumption is the bicycle. * 1 joule is the energy of 1A at 1V for 1 second, or 1 watt/s, or 0.238 calorie/s; 4.186 joules raise the temperature of 1g of water by 1°Celsius; 1,000 joules are 0.277Wh.Battery for LENOVO ASM 42T4691
Bicycles are by far the most effective form of transportation. Comparing the energy consumption of a bicycle to that of a car, a cyclist would consume only 0.4 liter of fuel per 100km (630mpg). Walking is also efficient; it uses about one liter per 100km (228mpg). The problem with self-powered propulsion is the limited travel range before fatigue sets in. In terms of energy usage, cars are one of the least efficient modes of transportation. The internal combustion engine utilizes only 25 percent of the net calorific value from the fuel for propulsion. The calculation looks even worse when taking into account the weight of the vehicle with a single passenger, the driver. Battery for LENOVO FRU 42T4688
The ratio of machine to man is typically ten-to-one. When accelerating a 1.5-ton vehicle, less than two percent of the energy moves the 75kg (165lb) driver, his briefcase and the lunch bag; 98 percent goes to heat and friction. Even a modern jet plane has better fuel efficiency than a car. A fully occupied Airbus 340 gets 3.4l/100km (70mpg), cruising at 950km/h (594mph).Battery for LENOVO FRU 42T4690
Trains are one of the most efficient modes of transportation. The 36km Yamanote circle line connecting major urban centers in Tokyo carries 3.5 million passengers per day. During rush hour, the 11-car train runs every 150 seconds. Such a passenger volume would be unthinkable by private cars on city streets. Trains are also economical to move freight. Transporting one ton of freight consumes only 0.65 liters of fuel per 100km (362mpg). Affluent societies want personal transportation, but with a large critical mass driving vehicles on government-funded highways with minimal contribution by the drivers and without mandated limits, this free-roaming lifestyle is taking a toll on our energy resources. Battery for LENOVO L08S6Y21
Developing countries also desire personal transportation. As car become affordable to them, they will begin consuming fossil fuel too and this will increase the need for hydrocarbons further. According to the US Department of Energy, 71 percent of the oil consumed in the USA is for transportation. Out of this, 51 percent goes to passenger cars and light trucks. Smaller vehicles and the development of efficient rail systems could cut the energy for transportation in half. Read more about Free energy... Almost!Battery for LENOVO L09C6Y02
Governments are exploring ways to reduce the dependency on fossil fuel and to lower emissions. They do this by promoting the electric car. This is done in good faith, but looking at Figure 5 we may be facing an impossible task. Many readers will agree that the success of personal transportation was only made possible with the abundance of oil at very low price in terms of net calorific value. The notion of driving a large vehicle for long distances may not be transferable with Battery for LENOVO L09L6Y02 propulsion, even with government subsidies. Today’s batteries are weak contenders against petroleum, and the chart below demonstrates this. Li-ion, the battery choice for the electric vehicle, is hardly visible; the 90 percent efficiency of the electric motor does not make up for the low net calorific value.Electrical energy from non-rechargeable (primary) batteries is expensive in relative terms and its use is limited to low power applications such as watches, flashlights and portable entertainment devices. Cell phones, laptops and power tools run mainly on rechargeable (secondary) batteries.Battery for LENOVO L09M6Y02
In this paper we calculate the cost to produce 1000 watts of power for one hour (1kWh) from different energy storage medias. We first look at primary and secondary batteries; then compare the energy cost derived from an internal combustion motor, the fuel cell and finally the electrical grid. The primary batteryFigure 1 reveals the cost of energy using commercial alkaline cells. The right column shows a lithium battery for still cameras and memory backup. It can be seen that larger cells provide a lower cost per kWh than small cells.Battery for LENOVO L09S6Y02
The energy cost from the AA is more than half that of the smaller AAA. The C cell provides the lowest cost per kWh. The D cell has gone up in cost because of moderate use. Advanced systems, such as lithium, provide very high energy density at a premium cost. The energy cost of the 6-volt Battery for LENOVO 57Y6454 is more than ten times that of an alkaline C cell.Primary batteries hold more energy than secondary batteries per size and weight. Operational readiness, long storage and instant readiness are other benefits. Primary batteries contain little toxic substances and are considered environmentally friendly.Battery for LENOVO 42T4235
Secondary batteries provide far more economical energy than primaries, as Figure 2 reveals. This analysis is based on the estimated purchase price of a commercial battery pack and on the number of discharge-charge cycles it can endure before replacement is necessary. The calculated cost does not include the electricity needed for charging, nor does it account for the purchasing cost of the charging equipment. Newer chemistries provide higher energy densities than conventional batteries per size and weight but the cost per kWh is higher. Battery for IBM ThinkPad A31
Battery for ACER Aspire 5738
Price is another issue. Because of added complexity and higher parts count compared to single frequency AC conductance, the Spectro™ technology will command a higher price. We are not competing directly with currently available Charger for Dell Inspiron 1150 testers; rather, we offer a solution for those needing a better technology because the present method may be insufficient.
Technology has advanced to a point where measuring Charger for Dell Inspiron 5100 performance through non-invasive means will become the acceptable standard. Applying a full discharge for the purpose of obtaining the reserve capacity is impractical and stresses the battery. Multi-model electrochemical impedance spectroscopy with improved data processing algorithms will bring this task one step closer to reality.Multi-frequencies EIS not only makes RC estimations possible; it also improves the CCA readings. Rather than providing a reference numbers relating to Charger for Dell Inspiron 5150 conductivity, EIS can give actual CCA equivalents. The technology also improves state-of-charge estimations. Typical applications include verifications of battery warranty returns, assessing the state-of-life of stationary batteries and checking the capacity for batteries in defense and marine applications. EIS is also an indispensable tool in examining batteries for wheelchair, golf carts, robots, boats and forklifts.Charger for Dell Inspiron 5160
Portable batteries for cell phones, laptops and cameras may be rapid-tested by applying a number of load pulses while observing the relationship between voltage and current. Ohm's Law is used to calculate the internal resistance. Comparing the readings against a table of values estimates the Charger for Dell Latitude 100L 's state-of-health. This load pulse method does not work well for larger batteries and AC conductance is commonly used. An AC voltage is applied to the battery terminals that floats as a ripple on top of the battery's DC voltage and charges and discharges the battery alternatively. AC conductance has been incorporated into a number of hand-held testers to check batteries for vehicular and stationary Charger for Dell Inspiron B120 . To offer simple and low-cost units, these testers load the battery with pulses rather than injecting sinusoidal signals. The pulses are commonly not voltage controlled and the thermal battery voltage* may be surpassed. The thermal voltage threshold of a lead-acid battery is 25mV per cell. Exceeding this voltage is similar to over-driving an audio amplifier. Amplified noise and distortion is the result.AC conductance provides accurate readings, provided the Charger for Dell Inspiron B130 is fully charged, has rested or has been briefly discharged prior to taking the reading. AC conductance tends to become unreliable on low charge and sometimes fails a good battery. At other times, a faulty battery may pass as good. The correlation to the battery's state-of-charge is a common complaint by users. AC conductance works best in identifying batteries with definite deficiencies.Charger for Dell Inspiron 1300
We anticipate that lithium-ion will eventually replace nickel-metal-hydride in hybrid electric vehicles but short service life, high manufacturing costs and safety issues will stand in its way today. We need to remind ourselves that the automotive market can only tolerate a marginal cost increase for a new battery technology. In terms of added capacity, lithium-ion offers only a 20% increase in energy density per weight over nickel-based systems. The nickel-metal-hydride has proven to work well in current HEVs and a new chemistry would need to offer definite advantages over present systems to find buyers. Charger for Dell Inspiron 120L
Toyota, Honda and Ford are leading in HEV technology. Other major automakers are expected to offer competitive models by 2010. Currently, Panasonic EV Energy and Sanyo supply over 90% of the HEV batteries. Both companies are also developing lithium-ion batteries. While Japan and Korea are focusing on manganese systems, the USA is experimenting with phosphate, the chemistry that made the A123 Systems famous. Europe is relying on clean-burning diesel. These engines are so clean that they won't even stain a tissue that is placed on the exhaust pipe. BMW is working on a zero emission hydrogen car. Charger for Dell XPS M1330
AC conductance is non-invasive, quick and the test instruments are relatively inexpensive. There are, however, some fundamental problems. Most commercial testers use only one frequency, which is commonly below 100 Hertz. Multi-frequency systems would be more accurate but require complex data interpretation software and expensive hardware. Charger for Sony VGP-BPS13/Q
In this paper we focus on Electrochemical Impedance Spectroscopy (EIS), a method that overcomes some of the shortcomings of AC conductance.EIS evaluates the electrochemical characteristics of a Charger for Sony VGP-BPS13 by applying an AC potential at varying frequencies and measuring the current response of the electrochemical cell. The frequency may vary from about 100 micro Hertz (µHz) to 100 kilo Hertz (kHz). 100µHz is a very low frequency that takes more than two hours to complete one full cycle. In comparison, 100kHz completes 100,000 cycles in one second. Charger for Sony VGP-BPS9
Cobalt gets thermally unstable at a moderate temperature of 150°C (300°F). Manganese and phosphate cells can reach 250°C (480°F) before becoming unsafe. In spite of the increased thermal stability, the Battery for ACER Aspire 5738G requires expensive protection circuits to supervise the cell voltages and limit the current in fail conditions. The safety circuit will also need to compensate for cell mismatch that occurs naturally with age. The recent reliability problems with lithium-ion batteries in portable devices may delay entry into the HEV market.Battery for ACER Aspire 5738
Availability: Manufacturers of manganese and phosphate cells can hardly keep up with the demand. A rapid increase of lithium for HEV batteries would put a squeeze on battery production. With 7 kg (15 lb) of lithium perBattery for ACER Aspire 5735Z , there is talk of raw material shortages. Most of the known supplies of lithium are in South America, Argentina, Chile and Bolivia.Imagine a plug-in electric vehicle that can go 20 miles (32 km) with a single charge from the electrical outlet at home. There is no pollution and the neighbors won't hear you coming and going because the vehicle is totally silent. With the absence of gas tax, the road system is yours to use for free. Or is it?As good as this may sound, the savings will be small or non-existent because of the Battery for ACER Aspire 5735 . Dr. Menahem Anderman, a leading expert on advanced automobile batteries, says that we still have no suitable battery for the plug-in HEV and that the reliability of lithium-ion technology for automotive applications has not yet been proven. Unlike the ordinary HEV that operates on shallow charges and discharges, the plug-in HEV is in charge depletion mode that requires deep discharges.Battery for ACER Aspire 5542G
To obtain an acceptable driving range, the PHEV battery will need to be five times larger than the HEV battery. With an estimated life span of 1000 full charge and discharge cycles, the Battery for ACER Aspire 5542would need to be replaced every three years. At an estimated $10,000 per battery replacement, the anticipated cost savings would be quickly exhausted.
Modern cars do more than provide transportation; they also include auxiliary devices for safety, comfort and pleasure. The most basic of these auxiliaries are the headlights and windshield wipers. Most buyers would also want heating and air-conditioning systems. These amenities are taken for granted in gasoline-powered vehicles and will need to be used sparingly in a PHEV. Analysts give another 10 years before a viable plug-in HEV will be available. Battery for ACER Aspire 5536
The promise of a clean-burning fuel cell car is still vivid in our memory. Analysts now estimate 20 years before the fuel cell is ready for mass-produced cars. There are rumors that the fuel cell may never make it into an ordinary car. If this is true, a dream will go down in history with the steam-powered airplane of the mid 1800s that was simply too cumbersome to fly. The paradox of the hybrid vehicle Battery for ACER Aspire 5536G.
At the Advanced Automotive Battery Conference in Hawaii, a delegate member challenged a maker of HEVs with the claim that a German diesel car can get better fuel economy than the hybrid. The presiding speaker, being a trained salesman, flatly denied this notion. There is some truth to his claim, however. On the highway, the diesel car is indeed more fuel-efficient but the HEV has the advantage in city driving. Power boost for fast acceleration and regenerative breaking are advantages that the German diesel does not offer. Someone then asked, "What would happen if the HEV depletes its batteries while driving up a long mountain pass? Will the car have enough power?" Battery for ACER Aspire 5517
The answer was that the car would make it with the IC engine alone but the maneuverability would be restraint. To compensate for this eventuality, some HEV manufacturers offer SUVs featuring a full-sized IC motor of 250 hp and an electrical motor at 150 hp; 400 hp in total. Such a vehicle would surly find buyers, especially if the government provides grant money for being 'green.' It's unfortunate that the buyers of a small car or the commuters taking public transport won't qualify for such a handout. Battery for ACER Aspire 5516
Figure 3 illustrates general structure of such a network.QuickTest™ is built into the Cadex C7000-Series battery analyzers and services nickel, lithium and lead-based batteries for two-way radios, cell phones, laptops, scanners and medical devices. The analyzers are user-programmable and also perform Battery for Acer TravelMate TimelineX 6495T priming, reconditioning, fast-charging, life-testing and boosting functions. Cadex Electronics has developed a method to measure the state-of-health (SoH) of a battery in 3 minutes. QuickTest™ uses a patent-pending inference algorithm to fuse data from 6 variables, which are: capacity, internal resistance, self-discharge, charge acceptance, discharge capabilities and mobility of electrolyte. The data is combined with a trend-learning algorithm to provide an accurate SoH reading in percent. Battery for Acer TravelMate TimelineX 6495TG
QuickTest™ uses Battery for Acer TravelMate TimelineX 6595 specific matrices that are obtained with the analyzer's trend learning process. The ability to learn allows adapting to new batteries in the field. The matrices are stored in the battery adapters and automatically configure the analyzer to the correct battery setting. The adapters commonly include the matrix at time of purchase. If missing, the matrix can be added in the field by scanning two or more batteries on the analyzer's Learn program. The required charge level to perform QuickTest™ is 20-90%. If outside this range, the analyzer automatically applies a brief charge or discharge.What is the definition of state-of-health and when should a Battery for Acer TravelMate TimelineX 6595G be replaced? SoH reveals the overall battery conditions based on the above mentioned variables, which are capacity, internal resistance, self-discharge, charge acceptance, discharge capabilities and mobility of electrolyte. If any of these variables provide marginal readings, the end result will be affected. A battery may have a good capacity but the internal resistance is high. In this case, the end SoH reading will be lowered accordingly. Similar demerit points are added if the battery has high self-discharge or exhibits other chemical deficiencies. Battery for Acer TravelMate TimelineX 6595T
The Battery for Acer TravelMate TimelineX 6595TG should be replaced if the SoH falls below 80%.During the last 20 years, three basic battery rapid test methods have emerged: DC load, AC conductance and multi-frequency electro-chemical impedance spectroscopy (EIS). All methods are resistance based, a characteristic that reveals the battery's ability to deliver load current. Internal resistance provides useful information in detecting problems and indicating when a battery should be replaced. However, the battery often drops below the critical 80% level set by IEEE before the condition can effectively be detected. Neither does resistance alone provide a linear correlation to the Battery for Acer TravelMate TimelineX 8473 's capacity. Rather, the increase of cell resistance relates to aging. When measuring the internal resistance of brand new VRLA cells from the same batch, variations of 8% between cells are common. Manufacturing process and materials used contribute to the discrepancies. Rather than relying on an absolute resistance reading, service technicians are asked to take a snapshot of the cell resistances when the battery is installed and then measure the subtle changes as the cells age. A 25% increase in resistance over the baseline indicates a performance drop from 100% to about 80%. Battery for Acer TravelMate TimelineX 8473G manufacturers honor warranty replacements if the internal resistance increases by 50%.
Before analyzing the different test methods, let's briefly brush up on internal resistance and impedance, terms that are often used incorrectly when addressing the conductivity of a Battery for Acer TravelMate TimelineX 8473T . Resistance is purely resistive and has no reactance. There is no trailing phase shift because the voltage and current are in unison. A heating element is such a pure resistive load. It works equally well with direct current (DC) and alternating current (AC). Most electrical loads, including the battery, contain a component of reactance. The reactive part of the load varies with frequency. For example, the capacitive reactance of a capacitor decreases with rising frequency. A capacitor is an insulator to DC and no current can pass through. The inductor, on the other hand, acts in the opposite way and its reactance increases with rising frequency. DC presents an electrical short. A Battery for Acer TravelMate TimelineX 8473TG combines ohmic resistance, as well as capacitive and inductive reactance. The term impedance represents all three types.
There are some discrepancies in the resistance readings between the 'load test' and 'AC conductance test'. The differences are more apparent on marginal than on good Battery for Acer TravelMate TimelineX 8573 . So which reading is correct? In many aspects, the AC conductance is superior to the load test, however, one single frequency cannot provide enough data to evaluate the battery adequately. Multi-frequency devices are being developed but their complexity rises exponentially with the number of frequencies used. Resistance measurement, as a whole, provides only a rough sketch of the battery's performance because various battery conditions affect the readings. For example, a Battery for Acer TravelMate TimelineX 8573T that has just been charged shows a higher resistance reading than one that has rested for a few hours. An empty or nearly empty battery also exhibits elevated internal resistance. To obtain reliable readings, a battery must be at least 50% charged. Temperature further affects the internal resistance readings. A hot battery reads a lower resistance than one at ambient temperature or one that is cold. In addition, the chemistry, the number of cells connected in series and the current rating (size in mAh) of a battery influence the results. Many batteries also contain a protection circuit that further distorts the readings.Battery for Acer TravelMate TimelineX 8573TG
The voltage of a lithium-based Battery for Acer TravelMate 5742ZG can, to some extent, indicate SoC. A fully charged cell reads about 4.0V/cell and a partially charged cell measures between 3.0 and 4.0V/cell. The load test applies a momentary load, during which the voltage is measured. Voltage over current equals the resistance. More accurate results are obtained by applying a two-stage load. Figure 1 illustrates the voltage pattern of such a two-stage load test. An alternative method of measuring the internal battery resistance is the AC conductance test. An alternating current of 50 to 1000 Hertz is applied to the Battery for Acer TravelMate 5744 terminals. The battery's reactance causes a phase shift between voltage and current, which reveals the condition of the battery. AC conductance works best on single cells. Figure 2 demonstrates the relation of voltage and current on a battery.Some AC resistance meters evaluate only the load factor and disregard the phase shift information. This technique behaves similar to the pulse method in that the AC voltage is superimposed on the battery's DC voltage and acts as brief charge and discharge pulses. The amplitude of the ripple is utilized to calculate the internal Battery for Acer TravelMate 5744G resistance.
The Battery for Acer TravelMate 5744Z may be viewed as a set of electrical elements. Figure 1 illustrates Randles' basic lead-acid battery model in terms of resistors and a capacitor (R1, R2 and C). The inductive reactance is commonly omitted because it plays a negligible role in a battery at low frequency.Figure 1: Randles model of a lead acid battery. The overall battery resistance consists of pure ohmic resistance, as well as inductive and capacitive reactance. The values of these components are different for every battery tested. Battery rapid test methods and how they work. Let's now look at the different Battery for Acer Travelmate 5760 test methods and evaluate their strengths and limitations. It is important to know that each method provides a different internal resistance reading when measured on the same battery. Neither reading is right or wrong. For example, a cell may read higher resistance readings with the DC load method than with a 1000-hertz AC signal. This simply implies that the Battery for Acer Travelmate 5760G performs better on an AC than DC load. Manufacturers accept all variations as long as the readings are taken with the same type of instrument.
DC load method: The pure ohmic measurement is one of the oldest and most reliable test methods. The instrument applies a load lasting a few seconds. The load current ranges from 25-70 amperes, depending on Dell 312-0600 Charger size. The drop in voltage divided by the current provides the resistance value. The readings are very accurate and repeatable. Manufacturers claim resistance readings in the 10 micro-ohm range. During the test, the unit heats up and some cooling will be needed between measurements on continuous use. The DC load blends R1 and R2 of the Randles model into one combined resistor and ignores the capacitor. C is a very important component of a Dell 312-0504 Charger and represents 1.5 farads per 100 Ah cell capacity. The true integrity of the Randles model cannot be seen. R1 and R2 appear as one ohmic value. AC conductance method: Instead of a DC load, the instrument injects an AC signal into the battery. A frequency of between 80-100 hertz is chosen to minimize the reactance. At this frequency, the inductive and capacitive reactance converges, resulting in a minimal voltage lag. Dell 312-0575 Charger
Manufacturers of AC conductance equipment claim Dell 312-0576 Charger resistance readings to the 50 micro-ohm range. AC conductance gained momentum in 1992; the instruments are small and do not heat up during use. The single frequency technology sees the components of the Randles model as one complex impedance, called the modulus of Z. The majority of the contribution is coming from the conductance of the first resistor. The individual components of the Randles model cannot be distinguished and appear as a blur. Multi-frequency electro-chemical impedance spectroscopy (EIS): Cadex Electronics has developed a rapid-test method based on EIS. Called Spectro™, the instrument injects 24 excitation frequencies ranging from 20-2000 Hertz. Dell 312-0576 Charger
The sinusoidal signals are regulated at 10mV/cell to remain within the thermal battery voltage of lead acid. This allows consistent readings for small and large batteries.. With multi-frequency impedance Spectroscopy, all three resistance values of the Randles model can be established. A patented process evaluates the fine nuances between each frequency to enable an in-depth Dell 312-0590 Charger analysis.
R1, R2 and C can be measured separately, enabling the estimation of Dell 312-0594 Charger conductivity and capacity. Spectro™ is the most complex of the three methods. The 20-second test processes 40 million transactions. The instrument is capable of reading to a very low micro-ohms level. With stored matrices as reference, Spectro™ is capable of providing battery capacity in Ah, conductivity (CCA) and state-of-charge.The EIS concept is not new. In the past, EIS systems were hooked up to dedicated computers and diverse laboratory equipment. Dell FK890 Charger
Trained electrochemists were required to interpret the data. Advancements in data analysis automated this process and high-speed signal processors shrunk the technology into a handheld device.DC load and AC conductance have one major limitation in that these methods cannot measure capacity. With the growing demand of auxiliary power on cars and trucks and the need to assess performance of stationary batteries non-invasively, testers are needed that can estimate Dell FP282 Charger capacity. Cadex has succeeded in doing this with car batteries. The company is working on applying this technology to stationary batteries.
Figure 5 reveals the reserve capacity (RC) readings of 24 car batteries, arranged from low to high on the horizontal axis. The Dell GK479 Charger was first tested according to the SAE J537 standard, which includes a full charge, a rest period and a 25A discharge to 1.75V/cell during which the reserve capacity was measured (black diamonds). The tests were then repeated with Spectro™ (purple squares) using battery-specific matrices. The derived results approach laboratory standards, as the chart reveals.Dell TM980 Charger
The black diamonds show capacity readings derived by a 25A discharge; the purple squares represent the Spectro™ readings. Some people claim a close relationship between Dell 0XR693 Charger conductivity (ohmic values) and capacity. Others say that internal ohmic readings are of little practical use and have no relation to capacity. To demonstrate the relationship between resistance and capacity, Cadex Electronics has carried out an extensive test involving 175 automotive batteries in which the cold cranking amps (CCA) were compared with the RC readings. CCA represents the conductivity of the Dell 312-0625 Charger and is closely related with the internal resistance.
Apple MacBook Pro 17inch Battery
Point-of-sale service has only become feasible with modern, easy-to-use Aspire 5750 Battery analyzers. Older units were designed for trained technicians and engineers. The programs consisted of cycling to remove the 'memory' on nickel-based batteries. Lithium-ion no longer suffers from memory and cycling has little effect in improving this battery chemistry. Today, customers want fast service and are not prepared to wait for long service procedures. Neither can the equipment be tied up for any length of time. One of the key features of the modern battery analyzer is the ability to assess the AS07A31 battery quickly and apply the needed repairs in minutes rather than hours.Offering battery test service at storefronts improves customer service and enhances overall customer satisfaction. Organizations using modern battery analyzers have reported sharp reductions in service related expenses. AS07A51
Manufacturers support storefront service and often furnish the participating dealers with battery analyzers of choice. This trend is growing. With camera phones and increasing use of data
transmissions, the TravelMate 5740 Battery is becoming a critical part in the overall performance of
a cell phone.Laptops are known to be tough hosts on their batteries. The host demands a stream of uninterrupted power but offers a poor working environment in return. As a result, the battery
cannot provide the promised runtime and the service cuts short, often with little notice. In this paper we address the unhappy marriage between the host and Apple A1245battery, and examine what causes a battery to deteriorate faster than in other portable devices.
What's the best Apple A1080 battery for laptops?
Batteries for laptops have a unique challenge - they must be small and lightweight. In fact, the Apple A1175 laptop battery should be invisible to the user and deliver enough power to endure a five-hour flight from Toronto to Vancouver. In reality, a typical laptop battery provides only about 90 minutes of service. Many users complain of much shorter runtimes.Computer manufacturers are hesitant to add a larger battery because of increased size and weight. A recent survey indicated that, given the option of larger size and more weight for longer runtimes, most users would settle for what is being offered today. For better or worse, we have learned to accept the short runtime of a laptop.The energy density of modern batteries improves by about 10% per year. However, the benefit of better Apple A1057 battery performance is eaten up by higher power requirements of laptops. This results in the same runtime but more powerful laptops.During the last few years, batteries have improved in terms of energy density. But any benefit in better battery performance is being eaten up by the higher power requirements of the laptops. This trend is continuing and the net effect will be the same runtimes but more powerful laptops.Apple MacBook 13 inch Battery
Most laptops are powered by lithium-ion. This chemistry has a high energy density and is lightweight. There is no immediate breakthrough on the horizon of a miracle battery that would provide more power than the current electro-chemical battery.Fuel cells, when available, will offer a continued stream of power by allowing the exchange of fuel cartridges when empty. Unfortunately, commercial fuel cells for laptops and other portable devices are still several years away. Power handling, size and cost remain the biggest hurdles. The early fuel cells will function more like a portable charger than a Apple Macbook Air 13 inch Battery replacement. The fuel cells currently in use have the difficulty in providing spontaneous high power on demand. The runtime of a laptop battery is based on the activity of the computer. The basic housekeeping, which the computer needs to stay alive, draws less power than, for example, reading, writing, computations and searching for files. Manufacturers prefer using idle time when specifying runtime. Apple MacBook Pro 17inch Battery
The army knew that allowing the Aspire 5100 Battery to sit in the chargers with only two to three hours of use per day during the war was not ideal, and the tests showed that the capacity on some packs had dropped to a low 30 percent. With the recondition function, however, nine out of 10 batteries could be restored to 80 percent and higher. The army uses 80 percent as a threshold for usability. At time of service, the nickel-cadmiumbatteries were two to three years old. To analyze the effectiveness of Aspire One D250 Battery maintenance further, the US Navy carried out a study to find out how user pattern affects the life of nickel-cadmium batteries. For this, the research team responsible for the program established three battery groups. One group received charge only (no maintenance); another was periodically exercised (discharge to 1V/cell); and a third group received recondition. The 2,600 UM08A31 batteries studied were used for Motorola two-way radios deployed on three US aircraft carriers. Table 3 summarizes the test results, including the cost factor.Exercise and recondition prolong battery life by three- and ninefold respectively.AS07A75
GTE Government Systems, the organization that conducted the test, learned that with charge-and-use the annual percentage of battery failure was 45 percent; with exercise the failure rate was reduced to 15 percent; and with recondition only 5 percent failed. The GTE report concludes that a Aspire One D257 Battery analyzer featuring exercise and recondition costing US$2,500 would return the investment in less than one month on battery savings alone.With the move to lithium-ion, fewer cell phone batteries fail during the warranty period than with nickel-based chemistries. Lithium-ion is less temperamental and needs less customer preparation than nickel. Yet, the volume of returned Aspire 5536 Battery remains relatively high. A North American cellular provider with about 12 million subscribers receives roughly 70,000 warranty returns per month. Out of these returned handsets, 50% have mechanical failures; 30% are performance related issues; 15% have battery or charger related problems; and 5% have miscellaneous faults.There are many reasons for the Aspire 5536G Battery failures. The battery may not have been properly charged before use. Perhaps the packs remained on the shelf too long or the charger is not functioning correctly. Lack of battery understanding may also be to blame. The true reason may never be known. Aspire 5332 Battery
To satisfy the customer and honor warranty obligations, the stores provide a replacement battery, no questions asked. Competition makes it tough to do otherwise. The faulty TimelineX 4820T Battery is then returned to the manufacturer for replacement. Phone manufacturers are aware that 80-90% of the returned batteries have either no problem or can easily be restored with a battery analyzer. The remaining 10-20% can often be revived by reactivating the safety circuit with a boot program and by applying charge/discharge cycles. Only a small percentage of batteries returned under warranty exhibit non-correctable faults. Not all batteries and handsets brought in for service fail due to manufacturer's defects. Some Acer UM08A51 batteries get damaged due to dropping and other physical abuse. A Service Manager of a leading cell-phone manufacturer hinted that coffee submersion is a common cause of failure. The acid in the coffee manages to corrode the electrical conductors in the handset and the battery. Coffee submersion occurs when the user accidentally mistakes the cup of coffee with the charger or cradle.Acer UM08A73
Warehouses started to fill with dead merchandise; and in 1997 a critical mass was reached. The cost of exchange, lost time by retail staff, shipping, warehousing and paying a subsidy for a replacement phone became a multi-million dollar problem. Refurbishing, a cost-effective exercise In an effort to salvage returned Acer UM08B72 batteries, some mobile phone manufacturers segregate battery packs according to purchase date. Packs returned within the thirty-day warranty period are marked type 'B'. The batteries are then consolidated and sent to a regional service center where they are serviced.Acer UM08B73 Batteries that are clean, (have no coffee residue) and regain a capacity of 80% or higher, are relabeled and sold at a discount price. The refurbishing program reclaims over 90% of the returned batteries. To reduce the flow of warranty goods, some manufacturers began charging $35US for no-fault returns. With the added cost, the dealers had no other option than to continue accepting and replacing returns from fickle customers.Acer AS07B31
On the strength of the success, some battery-refurbishing houses have extended the service to include batteries that are up to one year old. Repairing these older packs yields a 40-70% restoration rate. Managers have indicated that effectively run Aspire One HAPPY2 Battery refurbishing centers manage to generate a profit. Equally importantly is the environmental benefit in restoring rather than disposing of a battery.Servicing a batteries at point-of-sale is becoming a viable alternative to sending the pack to central service centers. With storefront service, the pack goes no further than to the store that sold the product. The acer al10a31 batteries are tested, repackaged, and made ready for the next customer with a battery problem. This eliminates courier charges and relieves the warranty obligation by the manufacturers. Modern battery analyzers are equipped with rapid-test programs that assess the battery state-of-health in a few minutes. Some analyzers (Cadex) offer a boost program to wake up seemingly dead batteries because regular chargers can no longer recharge these packs. The service takes only a few minutes. TravelMate 4202WLMi Battery
How does a battery fall asleep? A lithium-ion may become dysfunctional if discharged too deeply without applying a recharge after use. The boost program applies a gentle charge current to reactivate the Aspire 7736ZG Battery 's safety circuit. A fast-charge follows. To demonstrate the effectiveness of boost, 27 of 92 returned lithium-ion batteries were permanently restored with the boost function of a battery analyzer (Cadex C7400) at the Cadex test laboratory.If a pack requires a complete service of priming and reconditioning, the customer is asked to come back later. Alternatively, a refurbished Aspire 5738ZG Battery can be given as a replacement. Only batteries with mechanical defects or those with non-correctable electrical problems need replacement.
Connecting the Acer Aspire 5738G Battery to the analyzer has been a major challenge for customer
service staff. Setting the correct battery parameters and selecting a program is another hurdle. If a store handles a limited number of phones or if trained staff is not available, custom battery
adapters are the answer. Custom adapters are made for a specific battery type and allow easy insertion of the Aspire
7730ZG Battery . A wrong connection is not possible. Because of the firm contact provided between battery and analyzer, the custom adapters produce the most accurate
readings, especially on rapid-testing. (Cadex offers the SnapLock custom adapters that automatically configure the analyzer to the correct setting.) Service technicians dealing with a multitude
of batteries may prefer a universal battery adapter. This requires programming the battery analyzer to the correct Aspire
4820T Battery chemistry, voltage and milliampere rating. Once set, these parameters can be stored in those adapters equipped with a memory chip. (The Cadex adapters hold
up to 10 battery configuration codes. If more storage is needed, a PC with BatteryShop™ software will be required. With a PC, the user can program the analyzer by clicking the mouse on the
selected Aspire One 531 Battery.)
Why was storefront service not done earlier?
With the DC discharge, nickel-metal-hydride wore out gradually, providing an above average service life. At 700 cycles, the ASUS U56E Laptop Battery still provided 80% capacity. By contrast, the same battery type faded more rapidly with a digital discharge and the 80% capacity threshold was reached after only 300 cycles. This phenomenon indicates that the kinetic characteristics for nickel-metal-hydride deteriorate more rapidly with a digital than analog load. Although the test was simulating a GSM cell phone, Tetra and other digital two-way radios have similar loading. ASUS N50V Laptop Battery
Let's briefly compare the characteristics of nickel-cadmium and nickel-metal-hydride. nickel-cadmium has the advantage of maintaining steady high capacity and low internal resistance through most of its service life. nickel-metal-hydride, on the other hand, starts with good capacity and low internal resistance but the resistance increases after a few hundred cycles, causing the voltage to drop on a load. Even though the energy may still be present, the ASUS N50VN Laptop Battery cannot deliver the high current during transmit and the message cuts off. The radio becomes unreliable.Nickel-based batteries are high in maintenance. Periodic discharge cycles are needed to prevent crystalline formation on the cell plates, also known as memory. AP21-T91
Nickel-cadmium is more receptive to memory than nickel-metal-hydride because both nickel and cadmium plates are affected by memory. Nickel-cadmium should be exercised once ever 1 to 2 months, whereas nickel-metal-hydride can get by with a deliberate full discharge once every 3 months. Without proper maintenance, the advantage of nickel-cadmium over nickel-metal-hydride in terms of cycle life cannot be realized.AP23-T91
Lithium-ion has been tested for two-way radios and the results are positive. Substituting lithium-ion with nickel-based will require chargers specifically suited for this chemistry. While nickel-cadmium and nickel-metal-hydride can often share the same charger, lithium-ion uses a different charge algorithm. There is also a cost premium for lithium-ion. Future two-way radios will undoubtedly be fitted with lithium-ion.When charging a Eee PC T91SA battery , the charger's ready light will eventually illuminate, indicating that the battery is fully charged. The user assumes that the battery has reached its full potential and the battery is taken in confidence. The 'green light' liesThe 'green light' does not guarantee sufficient battery capacity or assure good state-of-health (SoH). "Ready" only indicates that the Eee PC T91 Laptop battery is full to whatever capacity that was available to fill. The rechargeable battery is a corrosive device that gradually loses the ability to hold a charge. Lack of periodic maintenance on nickel-based batteries hastens the capacity loss through crystalline formation, also known as memory. Lead and lithium-based batteries have other age related degradations. The capacity loss becomes apparent after one year of service. Some batteries deteriorate faster than others. ASUS Eee PC T91 S101 battery
Battery users are often unaware that their fleet batteries may barely last a day with minimal energy reserve to spare. Weak batteries can hide comfortably because little demand is placed on them in an ordinary day. The situation changes when full performance is required during an emergency. A collapse of portable communications is common and such breakdowns are often caused by poor Battery for DELL 6P848 performance. Figure 1: The green 'ready' light on a charger does not provide performance verification. It simply reveals that the battery is fully charged. Weak batteries charge quicker and remain on 'ready' longer than strong ones. Bad batteries tend to gravitate to the top and become a target for the unsuspecting user.Battery for DELL 7F948
In an emergency situation when quick charging action is required, the Battery for DELL 8F871 that are on 'ready' may be deadwood. In the meantime, the good packs are still charging because they have more capacity to fill. Large performance variations between the batteries will occur over time if the fleet batteries are not checked and maintained on regular schedule. Figure 2 illustrates four batteries of different sizes and state-of-health conditions. When observing the usable and unusable part of a battery, one can see that the larger packs do not necessarily carry more energy. Memory ridden batteries B and D retain less energy than the smaller Battery for DELL A5534524 . Carrying larger batteries or switching to energy-dense chemistries does not improve system reliability if weak packs are left in the fleet.
Carrying larger Battery for DELL BAT3151L6 or switching to high energy-dense chemistries does not improve system reliability if weak packs are left in the fleet. A weak battery can be compared to a fuel tank of a car that has been crushed. Refueling this tank is quick because it holds only a small amount of fuel. Like the green light on a charger, the fuel gauge will show full when the tank has been filled and everything looks normal to the driver. However, the distance traveled before refueling will be short. Battery for DELL BATACY13C8
Batteries do not offer a fuel gauge to check the remaining energy and periodic battery maintenance is required. The benefit of such an exercise is three-fold: it identifies and eliminates non-performers, it increases battery reliability, and it prolongs the of life nickel-based batteries. Weak batteries affected by memory can often be restored to full service with Battery for DELL BATACY13L8 analyzers featuring the recondition program.A simple, self-governing maintenance system for fleet batteries is illustrated in Figures 3, 4 and 5. The time required maintaining a large battery fleet should take less than 30 minutes per day.
Cell phone manufacturers act out of genuine concern for safety rather than using scare tactics to persuade customers to buy their own accessories. They do not object to third party suppliers in offering Asus K50IN Laptop battery and chargers as long as the products are well built, safe and functioning. The buyer can often not distinguish between an original and a counterfeit battery because the label may appear bona fide. Caution should also be exercised in purchasing counterfeit chargers. Some units do not terminate the Asus K50I Laptop battery correctly and rely on the battery's internal protection circuit to cut off the power when fully charged. Precise full-charge termination and a working protection circuit are needed for the safe use of the lithium-ion battery. What's the best Dell Precision M70 battery for two-way radios?Most two-way radios use nickel-cadmium.
These batteries are durable and forgiving if abused. But nickel-cadmium Asus K50IE Laptop battery has only moderate energy density and are environmentally unfriendly. Environmental agencies have been discouraging its use, especially in Europe. The recommended alternative is nickel-metal-hydride, a battery that has higher energy density and contains no toxic metals. nickel-metal-hydride has been tested in two-way radios for a number of years but the results are mixed. Shorter than expected service life is the major drawback. Asus K50IP Laptop battery
For two-way radios, nickel-metal-hydride has a cycle life, which is half that of standard nickel-cadmium. Nickel-metal-hydride prefers a moderate discharge current of 0.5C or less. A two-way radio, on the other hand, draws a discharge current of about 1.5A when transmitting at 4W of power. High discharge loads and sharp pulse currents shorten Asus K50ID Laptop battery life.To compare the longevity of nickel-metal-hydride under different load condition, a test was carried out in which batteries of the same type were discharged with a DC and digital load. In both tests, the batteries were discharged to 1.04 volts per cell. The DC load was a steady 500mA; the digital load simulated the Global System for Mobile Communications (GSM) at 1.65 ampere peak for 12 ms every 100 ms with 270 mA standby. (Note that the GSM pulse for voice is about 550 ms every 4.5 ms).Asus K50C Laptop battery
COMPAQ 6820s battery
When envisioning “burning an endless supply of hydrogen,” we must first produce the resource. Hydrogen is not abundantly available in the earth ready to use, as oil and natural gas is and needs other energies to make it into a usable product, similar to electricity to charge a COMPAQ 6730s battery . If electricity produces hydrogen, then this energy source should come from a renewable resource. This is not always the case and much comes is derived from burning coal, oil and natural gas. Fossil fuel lends itself well to produce hydrogen, however, converting this valuable fuel to hydrogen does not make much sense when considering that the process does not add much value. Seen from this angle, hydrogen cannot compete with fossil fuel pumped “free” from the earth as a gift to humanity.COMPAQ 6820s battery
Fuel storage is a further disadvantage. Liquid hydrogen has a low energy density and the volumetric storage in terms of energy is about five times less than petrol products. In liquid form, hydrogen needs extensive insulation for cold keeping, and in gaseous form pressurized hydrogen requires heavy storage tanks. A reformer would allow the use of methanol, propane, butane and natural gas, however, when converting these fossil fuels into pure hydrogen, some leftover carbon is being released. Although 90 percent less potent than what comes from the tailpipe of a car, carrying a reformer adds to vehicle weight and increases cost. COMPAQ 6735s battery
In addition, reformers are known to be sluggish and the net benefit of the fuel cell over the internal combustion engine diminishes.Sir William Grove, a Welsh judge and gentleman scientist developed the fuel cell concept in 1839, but the invention never took off. This was in part due to the rapidly advancing internal combustion engine that promised better early results. It was not until the second half of the 20th century that the fuel cell was put to practical use during the Gemini space program in the 1960s. NASA preferred this clean power source to nuclear or solar energy and the alkaline fuel cell system that was chosen generated electricity and produced the drinking water for the astronauts. Compaq nc6320 battery
High material cost made the fuel cell prohibitive for commercial use at that time. This did not hinder Dr. Karl Kordesch, the co-inventor of the alkaline Compaq nc6400 battery , from converting his car to an alkaline fuel cell in the early 1970s. Kordesch drove his car for many years in Ohio, USA. He placed the hydrogen tank on the roof and utilized the trunk for the fuel cell as well as back-up batteries. According to Kordesch, there was “enough room for four people and a dog.” A fuel cell is an electrochemical device that combines hydrogen fuel with oxygen to produce electricity, heat and water. The fuel cell is similar to a COMPAQ 6530b battery in that an electrochemical reaction takes place as long as fuel is available. The hydrogen fuel is stored in a pressurized container and oxygen is taken from the air. Because of the absence of a burning process, there are no harmful emissions, and the only byproduct is fresh water. The water emitted from the proton exchange membrane fuel cell (PEMFC) is so pure that visitors of Vancouver’s Ballard Power Systems were being served hot tea made from this clean water. HP Mini 100e Battery
A closer look reveals vast discrepancies in the mW measurements of the test Sony PCGA-BPS21B batteries. In fact, these readings are typical of batteries that have been in use for a while. The NiCd shows 155mW, the NiMH 778mW and the Li‑ion 320mW, although the capacities checked in at 113, 107 and 94 percent respectively when tested with the DC load of a battery analyzer. It should be noted that the internal resistance of a new Sony PCGA-BPS21/S battery reads between 75 to 150mW. From these charts we observe that the talk-time is in close relationship with the battery’s internal resistance. The NiCd produces a long talk time at all C-rates. In comparison, the NiMH only works at a lower C-rate. The Li‑ion performs better but is marginally at a 3C discharge.Some rechargeable VGP-BPS21Abatteries can be restored through external means, such as applying a full discharge. There are, however, many defects that cannot be corrected. These include high internal resistance, elevated self-discharge, electrical short, dry-out, plate corrosion and general chemical breakdown.VGP-BPS26
Let's now check how the test VGP-BPS10 batteries perform on a cell phone. The maximum pulse current of a GSM (Global System for Mobile Communications) cell phones is 2.5 amperes. This represents a large current from a relatively small battery of about 800 milliampere (mAh) hours. A current pulse of 2.4 amperes from an 800 mAh battery, for example, correspond to a C-rate of 3C. This is three times the current rating of the battery. Such high current pulses can only be delivered if the internal battery resistance is low.Figures 2, 3 and 4 reveal the talk time of the three Sony VGP-BPS13/B batteries under a simulated GSM current of 1C, 2C and 3C. One can see a direct relationship between the battery's internal resistance and the talk time. nickel-cadmium performed best under the circumstances and provided a talk time of 120 minutes at a 3C discharge (orange line). nickel-metal-hydride performed only at 1C (blue line) and failed at 3C. lithium-ion allowed a moderate 50 minutes talk time at 3C. The internal resistance varies with the state-of-charge of the Sony VGP-BPS13 battery. The largest changes are noticeable on nickel-based batteries. In Figure 5, we observe the internal resistance of nickel-metal-hydride when empty, during charge, at full charge and after a 4-hour rest period.
The resistance levels are highest at low state-of-charge and immediately after charging. Contrary to popular belief, the best Sony VGP-BPS13/Q battery performance is not achieved immediately after a full charge but following a rest period of a few hours. During discharge, the internal battery resistance decreases, reaches the lowest point at half charge and starts creeping up again (dotted line). The internal resistance of lithium-ion is fairly flat from empty to full charge. The VGP-BPS13A/B battery decreases asymptotically from 270 mW at 0% to 250 mW at 70% state-of-charge. The largest changes occur between 0% and 30% SoC. The resistance of lead acid goes up with discharge. This change is caused by the decrease of the specific gravity, a depletion of the electrolyte as it becomes more watery. The resistance increase is almost linear with the decrease of the specific gravity. A rest of a few hours will partially restore the VGP-BPS13A/Q battery as the sulphate ions can replenish themselves. The resistance change between full charge and discharge is about 40%. Cold temperature increases the internal resistance on all batteries and adds about 50% between +30°C and -18°C to lead acid batteries. Figure 6 reveals the increase of the internal resistance of a gelled lead acid Sony VGP-BPS13A/S battery used for wheelchairs.
With the move from analog to digital devices, new demands are being placed on the Sony VGP-BPS13B/S battery. Unlike analog equipment that draws a predictable and steady current, digital devices load the battery with short, high current bursts. One of the urgent requirements of a battery for digital applications is low internal resistance. Measured in milliohms (mW), the internal resistance is the gatekeeper that, to a large extent, determines the runtime. The lower the resistance, the less restriction the battery encounters in delivering the needed power bursts. A high mW reading can trigger an early ‘low battery’ indication on a seemingly good Sony VGP-BPS13B/Q battery because the available energy cannot be fully delivered. In this article we examine the current requirements of analog and digital communications devices. Figure 1 provides typical examples of peak current of the analog two-way and digital Tetra radio, as well as the AMP, GSM, TDMA and CDMA mobile phones.Service technicians have been puzzled by the seemingly unpredictable Sony-vgp-bps2a battery behavior when powering digital equipment. With the switch from analog to digital wireless communications devices, particularly mobile communications equipment, a battery that performs well on an analog system may show irrational behavior when used on a digital unit. Testing these batteries with a battery analyzer produces good capacity readings. Why then do some batteries fail on digital devices but not on analog?Sony-vgp-bps2b
HP Pavilion DV7 Battery
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HP Pavilion DV7 Battery
The replacement HP Pavilion DV7 battery is specially designed for the original 6-12 Cell HP Pavilion DV7 battery.These high quality replacement batteries are engineered to meet or exceed original specifications assuring better performance and longer life. The quality of this HP/Compaq laptop battery is in high grade quality and certified by CE and RoHS. You can reassure of purchasing it!
HP Pavilion DV7 Battery
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Satellite M35X Battery
The Portege R835 looks nearly identical to its predecessor, and we're not complaining. Satellite A500 Battery , The chassis is still made of magnesium alloy, complete with a handsome dark blue lid. Although they're plastic, the chrome hinges are a nice accent, as are the smoky gray touchpad buttons. When we picked it up, the Portege R385 didn't feel as sturdy as the aluminum MacBook Air or the Samsung Series 9 (which is made of even stronger duralumin),Satellite A505 Battery , but this is still a fairly durable design for the money.As with the R700, the R835's durability extends beyond its magnesium finish. Toshiba used a honeycomb rib structure for the base and palm rest for extra resilience. You also get hard drive protection and a spill-resistant keyboard.Weighing 3.2 pounds, the Portege R835 is one of the lightest laptops you'll find with both a 13-inch display and a built-in DVD drive. Satellite A505D Battery , While not as thin as ultraportables that eschew optical drives, the 0.7-1.1-inch profile makes this machine easy to slip into a bag. Because the keyboard sits between the space for the battery and the large touchpad, the keys on the Portege R835 aren't quite as large as what you'll find on competing ultraportables. They're shorter than those on Toshiba's own 13-inch T235, making the keyboard feel cramped. Satellite L200 Battery , The keys also gave too little feedback when typing, which made it more difficult to tell when we'd successfully hit a target. Nevertheless, we acclimated to the layout in about 30 minutes and typed at our usual speed as we wrote this review. We'd really like to see Toshiba add a backlit keyboard, like on the Samsung Series 9.Satellite M30-993 Battery
Click to enlargeMaybe it's because of the new processor, but the R835 doesn't get as warm as its predecessor. Satellite Pro M30 Battery , After playing Hulu at full screen for 15 minutes, the touchpad registered 86 degrees, the area between the G and H keys reached 88 degrees, and the bottom of the underside measured 96 degrees. The R700 was about as cool on top but reached 103 degrees on the bottom. The only spot where the R835 got slightly uncomfortable on our lap was the bottom-left side near the vent, Satellite M30X Battery , which registered 102 after our Hulu test. The LED-backlit 13.3-inch display (1366 x 768 pixels) on the R835 delivered a bright and colorful picture when we streamed a 480p episode of The Daily Show from Hulu. However, because vertical viewing angles are narrow, you need to push the screen back a bit so the display doesn't wash out. To test out the small speakers above the keyboard we cranked Blink 182's "All the Small Things" on Slacker. The R835 got loud, but the song sounded too harsh above 60-percent volume. The only new addition with the R385 is a USB 3.0 port on the right side for connecting high-speed peripherals. Otherwise, you still get Ethernet, headphone and mic on the right, along with the optical drive and SD card Slot. The left side houses the power connector, VGA, USB/eSATA port, a third USB port, and HDMI.Satellite M35X Battery
Two small dedicated buttons sit above the keyboard on the right side. Satellite M30-BTO Battery , One launches the Eco Utility for saving power, and the other engages Intel's WiDi 2.0 technology for streaming video to a big-screen TV. (More on that technology below.) Measuring 3.3 x 2 inches, the R835's touchpad isn't as ginormous as those on the Samsung Series 9 (3.9 x 2.7) or the 13-inch MacBook Air (4.3 x 3 inches), but it's still plenty large for smooth navigation. Satellite M30-S732 Battery , With the older Portege R700, the cursor sometimes jumped around when our palm accidentally brushed up against the touchpad, but we didn't experience that issue this machine.In our tests, pinch-to-zoom and rotate gestures worked fine on the Portege R835. Plus, the Synaptics touchpad lets you perform neat tricks. We configured a three-finger press to launch Google Chrome and activated three-finger swiping (great for flicking through photos). Satellite M35 Battery , You can also deactivate the touchpad with a button right beneath the space bar. Not a fan of touchpads with integrated buttons? Then you'll be pleased with the R835. The two dedicated mouse buttons worked well, whether we were opening apps or selecting text.Satellite Pro M30 Battery
The Portege R835 packs a second-generation, 2.3-GHz Intel Core i5 2410M processor, 4GB of RAM, and a whopping 640GB hard drive running at 5,400 rpm. satellite r850 Battery , The more business-oriented (and more expensive) configuration of the R700 we tested last year had a 7,200-rpm hard drive and an older Core i5 processor but a higher clock speed. Those differences explain why the R835 turned in a slightly lower score in PCMark Vantage (6,115 vs. 6,657).Both the ThinkPad X220 (7,719) and Samsung Series 9 (6,857) scored higher, satellite pro r850 Battery , but the former has a faster CPU and hard drive, while the latter sports a zippier solid state drive. Still, this ultraportable is no slouch. Thanks to Intel's Quick Sync Video technology inside this machine's second-gen Core processor, it took the R835 45 seconds to transcode a 114MB video from MPEG-4 to AVI using Oxelon Media Encoder. That's 8 seconds faster than its predecessor. Satellite M30 Battery , The R835's 5,400-rpm drive booted Window 7 in 49 seconds, which is about 10 seconds faster than the average ultraportable but behind competing systems equipped with SSDs. We did notice that it took only about 3 seconds for the R835 to wake from sleep after we closed the lid. The drive's transfer rate of 25.3 MBps is below average.Satellite M30-853 Battery
Intel's new HD graphics really flexes its muscles on this sequel. Satellite M30-861 Battery , The Portege R835 notched a 3DMark06 score of 4,564, which is more than double what the R700 mustered (1,967). We also saw a boost in gaming performance. The R835 achieved 44 frames per second in World of Warcraft with the settings on Good, 10 points higher than its predecessor. That rate dipped to 17 fps at the max, which isn't playable. Satellite M30-901 Battery , Click to enlargeThe charger for the Portege R835 is certainly compact enough to take with you, but chances are you won't need it for most of the day. On the LAPTOP Battery Test (continuous surfing over Wi-Fi on 40-percent brightness), the machine's six-cell battery lasted 6 hours and 22 minutes. That runtime is better than the category average (5:32), as well as the R700 (6:01) and the Samsung Series 9 (5:11). Satellite M30-941 Battery , Still, the 13-inch MacBook Air (6:36) and the ThinkPad X220 (7:51) both lasted longer.Too bad the wireless card in this notebook didn't perform very well. Intel's WiFi Link 1000 AGN radio delivered a transfer rate of 20.6 Mbps at 15 feet from our router, which dropped all the way to 8.6 Mbps at 50 feet. Those numbers are well below the category averages of 31 Mbps and 19 Mbps from those distances, respectively.Satellite M30-951 Battery
Toshiba bundles an almost overwhelming amount of branded utilities with the Portege R835. Satellite A300 Battery , In additional to Face Recognition for security and Eco Utility for extending battery life, you'll find a Hard Drive Impact Sensor, which pulls the head to prevent damage when it detects sudden movement. You also get Bulletin Board for posting photos, notes, and more in one place and Reel Time, which displays thumbnails of recently opened files. Other choices include Toshiba Assist (help and service), Satellite A215 Battery , Media Controller (media streaming), and Service Station (for software updates and PC health info).Non-branded apps include Google Chrome, Microsoft Office Starter 2010, and Windows Live Essentials. That package comes with Mail, Messenger, Movie Maker, Photo Gallery, and Writer.A couple of programs proved annoying. The Web Camera application automatically opened when we hovered the cursor over the top left part of the screen--until we turned the software off--and the hard drive sensor presented pop-ups when it detected movement. Satellite A210 Battery , We quickly turned that feature off, too. Then there's the usual Norton Internet Security pop-up offers; Toshiba includes a 30-day trial. Even Toshiba gets in on the pop-up act with a come-on for its online backup service (see below).Satellite A205 Battery
Toshiba backs the Portege R835 with a one-year standard warranty and 24/7 support. Satellite A203 Battery , To see how the company fared in our tech support showdown click here. You can also see how Toshiba ranked in our 2011 Best & Worst Laptop Brands report by clicking here.The Toshiba Portege R835 starts as low as $829. That price includes the same amount of RAM and same size hard drive as our configuration, but features a slower Core i3-2310M processor. Satellite A202 Battery , We think the bump in speed is worth the premium, especially since you can find the R835-P56X with the Core i5 CPU for $899. Click to enlargeWe liked but didn't love the last Toshiba Portege because it ran a little hot and we experienced some problems with the touchpad. Toshiba has addressed those issues with the Portege R835-P56X. The company also beefed up the graphics performance while maintaining more than 6 hours of Satellite A200 Battery life--without ballooning the price. The R835 isn't as sexy as the Samsung Series 9 or as fast as the ThinkPad X220, but it costs $720 less than the former and $370 less than the latter (as tested). Although the keyboard could be better, those in the market for Windows-powered ultraportable will find the Portege R835 to be a solid value.Satellite M40X Battery
The Intel WiFi Link 1000 BGN card in the A665 offered lackluster throughput. Satellite A305 Battery , At 15 feet from our router, the notebook delivered an average of 23.8 Mbps, more than 10 Mbps lower than the category average. Things didn't improve at 50 feet: The A665's 10.2 Mbps data rate was also well below the average (22 Mbps). Our $799 Satellite A665-S5176X came with a 2.1-GHz Intel Core i3 2310M CPU, 4GB of RAM, a 500GB hard drive, and Blu-ray, but a myriad of options are available. Satellite A350 Battery , Toshiba's site currently lists 41 different preconfigured models, from the $684 A665-S5171 (Core i3-380M, 4GB RAM, 640GB hard drive, DVD SuperMulti Drive) to the $1,699 A665-3DV8, which has a Core i7-740QM processor, 6GB of RAM, a 640GB hard drive, Nvidia GeForce GTS350M graphics, Blu-Ray, and a 3D-ready display that supports Nvidia 3D glasses. Satellite A355 Battery , If you're not interested in Blu-ray, Toshiba also offers the A665-S5177X with a more powerful second-gen Intel Core i5-2410M processor, 4GB of RAM, a 500GB hard drive, and a DVD SuperMulti Drive for $799.Satellite A355D Battery
There are plenty of useful utilities on board the Satellite A665-S5176. Satellite L450 Battery , Standouts included HDD Protection, which automatically parks the laptop's hard drive head when it detects sudden motion. The eco Utility provides power consumption info and adjusts various system components such as display brightness, CPU, and hard drive to conserve electricity.As mentioned above, Toshiba Video Player not only plays DVDs, but can upconvert them to the 720p resolution (plus 1080i output via HDMI), and will even convert content to 3D; Satellite A355 Battery , however, our configuration lacked a 3D-capable display. Also, the Toshiba Video Player won't play Blu-ray discs. For that you'll have to use the bundled Corel WinDVD software.On the productivity front, you'll find Microsoft's ad-supported Office Starter 2010 on board. It's also nice that Google Chrome is pre-installed.Toshiba backs the Satellite A665-S5176 with a standard one-year limited warranty, which covers parts and labor. Satellite L305 Battery , In addition, a full range of warranty upgrades are available, including onsite repair via Toshiba's support website. You can see how Toshiba fared in our Tech Support Showdown here, and click here to see how the company stacked up in our annual Best & Worst Brands report.Satellite L300 Battery
For an attractive $799, the Toshiba Satellite A665 delivers great sound, a Blu-ray drive, and fairly long Satellite L205 Battery life. We just wish it offered better Wi-Fi performance. In this price range, the Samsung SF510 is the more stylish option, but it has a weaker processor and lacks Blu-ray. The Dell XPS 15 has even better audio than the A665 and gives you a more powerful Core i5 processor and Nvidia graphics for the same price, and you can add a Blu-ray for just $100 more. Overall, the A665-S5176 is a compelling multimedia laptop for the price. Satellite L203 Battery , The premium ultraportable notebook category has never been more competitive. Between the long-lasting ThinkPad X220, the gorgeous Samsung Series 9, and the instant-on 13-inch MacBook Air, consumers have a wide range of compelling options. But what if you don't have well over a grand to spend? Enter the Toshiba Portege R835-P56X, an update to the company's popular R700 series that costs a very reasonable $929 (and starts at $829). Satellite L202 Battery , This 3.2-pound speedster includes a second-gen Core i5 processor, USB 3.0 support, and Intel's nifty WiDi 2.0 technology for streaming video wirelessly to a TV. Sound too good to pass up? Read on for our full review.Satellite L201 Battery
Battery for HP Pavilion dv4400
In terms of disposal, the SLA is less harmful than the NiCd Battery for HP NBP6B17B1 but the high lead content makes the SLA environmentally unfriendly.Pioneer work with the lithium battery began in 1912 under G.N. Lewis but it was not until the early 1970s that the first non-rechargeable lithium batteries became commercially available. Lithium is the lightest of all metals, has the greatest electrochemical potential and provides the largest energy density per weight. Attempts to develop rechargeable lithium Battery for HP F2105A followed in the 1980s, but failed due to safety problems. Because of the inherent instability of lithium metal, especially during charging, research shifted to a non-metallic lithium battery using lithium ions. Although slightly lower in energy density than lithium metal, the Li‑ion is safe, provided certain precautions are met when charging and discharging. In 1991, the Sony Corporation commercialized the first Li‑ion Battery for HP 458640-542 . Other manufacturers followed suit. Today, the Li‑ion is the fastest growing and most promising battery chemistry.
The energy density of the Li‑ion is typically twice that of the standard NiCd. Improvements in electrode active materials have the potential of increasing the energy density close to three times that of the NiCd. In addition to high capacity, the load characteristics are reasonably good and behave similarly to the NiCd in terms of discharge characteristics (similar shape of discharge profile, but different voltage). The flat discharge curve offers effective utilization of the stored power in a desirable voltage spectrum. Battery for HP HSTNN-UB68
The high cell voltage allows battery packs with only one cell. Most of today’s mobile phones run on a single cell, an advantage that simplifies Battery for HP 482962-001 design. To maintain the same power, higher currents are drawn. Low cell resistance is important to allow unrestricted current flow during load pulses. The Li‑ion is a low maintenance Battery for HP 484786-001 , an advantage that most other chemistries cannot claim. There is no memory and no scheduled cycling is required to prolong the battery’s life. In addition, the self-discharge is less than half compared to NiCd, making the Li‑ion well suited for modern fuel gauge applications. Li‑ion cells cause little harm when disposed.
Despite its overall advantages, Li‑ion also has its drawbacks. It is fragile and requires a protection circuit to maintain safe operation. Built into each pack, the protection circuit limits the peak voltage of each cell during charge and prevents the cell voltage from dropping too low on discharge. In addition, the cell temperature is monitored to prevent temperature extremes. The maximum charge and discharge current is limited to between 1C and 2C. With these precautions in place, the possibility of metallic lithium plating occurring due to overcharge is virtually eliminated. Battery for HP HSTNN-UB69
Aging is a concern with most Li‑ion Battery for HP HSTNN-XB24 and many manufacturers remain silent about this issue. Some capacity deterioration is noticeable after one year, whether the battery is in use or not. Over two or perhaps three years, the battery frequently fails. It should be noted that other chemistries also have age-related degenerative effects. This is especially true for the NiMH if exposed to high ambient temperatures. Storing the battery in a cool place slows down the aging process of the Li‑ion (and other chemistries). Manufacturers recommend storage temperatures of 15°C (59°F). In addition, the Battery for HP HSTNN-XB59 should be partially charged during storage.
Manufacturers are constantly improving the chemistry of the Li‑ion Battery for HP HSTNN-XB61 . New and enhanced chemical combinations are introduced every six months or so. With such rapid progress, it is difficult to assess how well the revised battery will age. The most economical Li-ion battery in terms of cost-to-energy ratio is the cylindrical 18650 cell. This cell is used for mobile computing and other applications that do not demand ultra-thin geometry. If a slimmer pack is required (thinner than 18 mm), the prismatic Li‑ion cell is the best choice. There are no gains in energy density over the 18650, however, the cost of obtaining the same energy may double. Battery for HP HSTNN-XB68
For ultra-slim geometry (less than 4 mm), the only choice is Li‑ion polymer. This is the most expensive system in terms of cost-to-energy ratio. There are no gains in energy density and the durability is inferior to the rugged 18560 cell.The Li-polymer differentiates itself from other Battery for HP HSTNN-XB69 systems in the type of electrolyte used. The original design, dating back to the 1970s, uses a dry solid polymer electrolyte. This electrolyte resembles a plastic-like film that does not conduct electricity but allows an exchange of ions (electrically charged atoms or groups of atoms). The polymer electrolyte replaces the traditional porous separator, which is soaked with electrolyte.Battery for HP KU531AA
The dry polymer design offers simplifications with respect to fabrication, ruggedness, safety and thin-profile geometry. There is no danger of flammability because no liquid or gelled electrolyte is used. With a cell thickness measuring as little as one millimeter (0.039 inches), equipment designers are left to their own imagination in terms of form, shape and size. Unfortunately, the dry Li-polymer suffers from poor conductivity. Internal resistance is too high and cannot deliver the current bursts needed for modern communication devices and spinning up the hard drives of mobile computing equipment. Battery for HP 458274-421
Heating the cell to 60°C (140°F) and higher increases the conductivity but this requirement is unsuitable for portable applications. To make a small Li-polymer Battery for HP 484788-001 conductive, some gelled electrolyte has been added. Most of the commercial Li-polymer batteries used today for mobile phones are a hybrid and contain gelled electrolyte. The correct term for this system is Lithium Ion Polymer. For promotional reasons, most battery manufacturers mark the battery simply as Li-polymer. Since the hybrid lithium polymer is the only functioning polymer Battery for HP 493976-001 for portable use today, we will focus on this chemistry.
With gelled electrolyte added, what then is the difference between classic Li‑ion and Li‑ion polymer? Although the characteristics and performance of the two systems are very similar, the Li‑ion
polymer is unique in that solid electrolyte replaces the porous separator. The gelled electrolyte is simply added to enhance ion conductivity.
Technical difficulties and delays in volume manufacturing have deferred the introduction of the Li‑ion polymer Battery for HP HSTNN-LB60 . In addition, the promised superiority of the Li‑ion polymer has not yet been realized.
No improvements in capacity gains are achieved — in fact, the capacity is slightly less than that of the standard Li‑ion Battery for HP 501114-001 . For the present, there is no cost advantage. The major reason for switching to the Li-ion polymer is form factor. It allows wafer-thin geometries, a style that is demanded by the highly competitive mobile phone industry.Consumer market put aside, the largest users of primary (non-rechargeable) Battery for HP HSTNN-OB60 are the military, specialty emergency services and forest fire fighters. High energy density, long storage and operational readiness are among their strong attributes. No charging and priming is required before use. Logistic is simple and battery power can be made available at remote locations that are unmanned and have no electrical power. Disposal is easy because most primary cells contain little toxic materials.Battery for HP HSTNN-XB60
Primary batteries have the highest energy density. Although the secondary (rechargeable) Battery for Compaq Presario A945US have improved, a regular household alkaline provides 50% more power than lithium-ion, one of the highest energy-dense secondary batteries. The primary lithium battery used in cameras holds more than three times the energy of a lithium-ion Battery for Compaq Presario V2600 of same size.The negative on the primary batteries is its relative high internal resistance, which inhibits current flow. High internal resistance has little affect when powering low-current devices such as a TV remote control or a kitchen clock. The problem arises with digital cameras and other power-hungry devices. A power drill on an alkaline would be unthinkable. The voltage would imply collapse.The comparison of the energy densities was done in an unfair way. Whereas most secondary Battery for Compaq Presario V4000 are rated at a 1C discharge, the alkaline was discharged at only 25mA to 0.8 volts. We now take the same batteries and run them under a load. The yellow bars in Figure 2 represent the usable energy if the batteries were used in such a device as a digital camera.With moderate load, the energy density of alkaline batteries is very high. Figure 3 illustrates the rated capacities of the AAA, AA, C, D cells and the 9V pack. Note that these batteries only deliver the specified mAh if discharged through a high resistive load typical of portable entertainment devices. Battery for Compaq Presario V4200
The most distinct limitation of the primary Battery for Compaq Presario V4300 is its one-time use. Because of this, the cost of power is about 30 times higher than that of rechargeables. The pricing becomes even more excessive if the packs are replaced after each mission, regardless of length. A general of the US Army said that half of the batteries discarded still have 50% energy left. Throwing away partially used batteries is widespread. Keeping track of these packs in the military and public sector is time-consuming and awkward. It is much simpler to issue fresh packs before each activity.It is possible to read the state-of-charge of primaryBattery for Compaq Presario V4400 . The most basic method is measuring the open terminal voltage but the result is inaccurate. The increase in internal resistance with lower state-of-charge adds to run-time estimations. A better method is counting the out-flowing energy units, also known as coulombs. This requires a circuit and a display unit on the Battery for Compaq Presario V5000 . Due to high cost and inherent inaccuracies, especially during pulsed loading, this method is seldom used on primary batteries. A more accurate state-of-charge measurement is possible with a rapid-test instrument that examines the chemical integrity of the battery. The test is non-invasive and takes only a few seconds to complete.Battery for HP Pavilion DV1000
During the last ten years, armies and emergency response teams have gradually been switching to rechargeable batteries. Improvements in Battery for HP Pavilion dv1200 technology, better charge methods and more readily available power sources made this possible. The most important single reason, however, is cost. In the US Army, rechargeable batteries are being used predominately for training. Officials are now exploring their suitability for combat missions. Rechargeables have advantages that go beyond cost issues. For one, the Battery for HP Pavilion dv1400 can be re-used and do not burden the supply channels.
In the absence of electric power, charging can be done through solar power, windmills and hand-crank generators. Even kinetic power is being explored in which an electric generator is built in the sole of the soldier's boot. Rechargeable batteries are able to providing power when no supply of fresh batteries is possible. Another advantage of secondary Battery for HP Pavilion dv1600 is low internal resistance. This allows high current on demand, an attribute that is essential for digital devices and instruments needing high inrush currents. Power tools, for example, could not be run effectively on alkaline batteries.
But rechargeable batteries have their limitations. Beside marginal energy density, secondary Battery for HP Pavilion DV1700 have a defined shelf life and lose the ability to hold charge as they age. Similar to a spring under tension, a secondary battery seeks to revert back to its lowest denominator.Battery aging is subject to cycling, storage temperature and state-of-charge. While a primary Battery for HP Pavilion dv4000 has a shelf life of 10 years, lithium-based batteries are good for 2-3 years in normal use. Cool storage at a 40% charge level prolongs longevity. Nickel-based batteries are good for 5 years and longer but require priming to regain performance after long storage.Another negative of rechargeable batteries is the high self-discharge. nickel-based Battery for HP Pavilion dv4100 exhibit a 10-20% self-discharge per month. This compares with 5-10% for lithium and lead-based batteries. The self-discharge increases at higher temperatures. For this reason, secondary batteries are not an effective media for long-term energy storage; primary batteries are better suited. A secondary Battery for HP Pavilion dv4300 can never be removed too far from the charger. It needs to be fed before each activity.Secondary batteries have a limited cycle count. The number of cycles achieved is based on the depth of discharge, environmental conditions, charge methods and maintenance procedures. Each battery chemistry behaves differently in terms of aging and wear. Battery for HP Pavilion dv4400
Battery for Fujitsu LifeBook B6110D
Start-stop in micro-hybrid cars stresses a regular lead acid Battery for Fujitsu SIEMENS S26391-F421-L300 and shortens the life. To get a long lifespan on continuous start/stop and allow fast charging to utilize the energy from regenerative braking, battery manufacturers are refining existing technologies and experimenting with new systems. Below is a list of existing and new lead acid batteries.AGM is an improved lead acid battery with higher performance than the regular flooded type. Instead of submerging the plates into liquid electrolyte, the electrolyte is absorbed in a mat of fine glass fibers. This makes the Battery for Fujitsu SIEMENS SMP-EFS-SS-22E-06 spill-proof, allowing shipment without hazardous material restrictions. The plates can be made flat like the standard flooded lead acid and placed in a rectangular case, or wound into a conventional cylindrical cell. AGM has very low internal resistance, is capable of delivering high currents and offers long service even if occasionally deep-cycled. AGM has a lower weight and provides better electrical reliability than the flooded lead acid type. It also stands up well to high and low temperatures and has a low self-discharge. Other advantages over regular lead acid are a better specific power rating (high load current) and faster charge times (up to five times faster). The negatives are slightly lower specific energy (capacity) and higher manufacturing costs.Battery for Fujitsu LifeBook N6110
AGM batteries are commonly built to size and are found in high-end vehicles to run power-hungry accessories such as heated seats, steering wheels, mirrors and windshield wipers. Starter Battery for Fujitsu LifeBook N6400 also power navigation systems, traction and stability control, as well as premium stereos. NASCAR and other auto racing leagues choose AGM products because they are vibration resistant. Start-stop batteries are almost exclusively AGM because the classic flooded type is not robust enough; repeated micro cycling would induce capacity fade. (See also “Heat, Loading and Battery Life.”) AGM is the preferred Battery for Fujitsu LifeBook N6410 for upscale motorcycles. It reduces acid spilling in an accident, lowers weight for the same performance and can be installed odd angles. Because of good performance at cold temperatures, AGM batteries are also used for marine, motor home and robotic applications. As with all gelled and sealed units, AGM batteries are sensitive to overcharging. Battery for Fujitsu LifeBook N6420 can be charged to 2.40V/cell (and higher) without problem; however, the float charge should be reduced to between 2.25 and 2.30V/cell (summer temperatures may require lower voltages). Automotive charging systems for flooded lead acid often have a fixed float voltage setting of 14.40V (2.40V/cell), and a direct replacement with a sealed unit could spell trouble by exposing the Battery for Fujitsu LifeBook N6460 to undue overcharge on a long drive. (See also “Charging Lead Acid.”
AGM and other gelled electrolyte batteries do not like heat and should be installed away from the engine compartment. Manufacturers recommend halting charge if the Battery for Fujitsu LifeBook N6470 core reaches 49°C (120°F). While regular lead acid batteries need a topping charge every six months to prevent the buildup of sulfation, AGM batteries are less prone and can sit in storage for longer before a charge becomes necessary. The following are important lead acid systems in limited use or under field test.The Axion Power e3 Supercell is a hybrid battery/ultracapacitor in which the positive electrode consists of standard lead dioxide and the negative electrode is activated carbon. The assembly process is similar to lead acid. The Battery for Fujitsu LifeBook C1320 offers faster recharge times and longer cycle life on repeated deep discharges than with regular lead acid systems, and this opens the door for the start-stop application. The lead-carbon combination of the Axion Power battery lowers the lead content on the negative plate, which results in a 30 percent weight reduction compared to a regular lead acid. This also lowers the specific energy to 15–25Wh/kg instead of 30–50Wh/kg of a regular lead acid Battery for Fujitsu LifeBook C1320D .
The Altraverda Battery for Fujitsu LifeBook C1321 is based on lead and uses a proprietary titanium sub-oxide ceramic structure called Ebonex® for the grid and an AGM separator. The un-pasted plate contains Ebonex® particles in a polymer matrix that holds a thin lead alloy foil on the external surfaces. With 50–60Wh/kg, the specific energy is about one-third larger than regular lead acid and is comparable with NiCd. Based in the UK, Altraverda works with East Penn in the USA, and the Battery for Fujitsu FMV-Q8220 is well suited for higher voltage applications.The composite plate material of the Firefly Energy battery is based on a lead acid variant that is lighter, longer living and has higher active material utilization than current lead acid systems. The battery includes foam electrodes for the negative plates, which gives it a performance that is comparable to NiMH but at lower manufacturing costs. Design concerns include microtubule blockage through crystal growth during low charge conditions. Battery for Fujitsu FMV-Q8240
In addition, crystal expansion causes a reduction of the surface area, which will result in lower capacity with aging. Pricing is also a concern. It currently costs about $450 to manufacture a Firefly battery as opposed to $150 for a regular lead acid version. Firefly Energy is a spin-off of Caterpillar and went into bankruptcy in 2010.Battery for Fujitsu FMV-Q8230
The CSIRO Ultra battery combines an asymmetric ultracapacitor and a lead acid battery in each cell. The capacitor enhances the specific power by acting as a buffer during charge and discharge. This produces 50 percent more power than a regular lead acid. Furthermore, the ultracapacitor/lead acid combination is said to prolong the Battery for Fujitsu LifeBook Q2010 service life by a factor of four. The manufacturer also claims that the battery is 70 percent cheaper to produce than current hybrid electric vehicle (HEV) batteries. CSIRO batteries are able to take fast charge to capture the energy from regenerative breaking. The battery is being tested for start-stop applications and is undergoing road trials in a Honda Insight HEV with good results. Furukawa Battery licensed the technology.EEStor is also based on the battery/ultracapacitor combination but goes further by using a modified barium titanate ceramic powder. The Battery for Fujitsu FMV-B8200 claims to have a specific energy of up to 280Wh/kg, higher than lithium-ion. The company only releases limited information and their claims are: One-tenth of the weight of NiMH in a hybrid application, no deep-cycle wear-down, 2–6 minute charge time, no hazardous material, similar manufacturing costs to lead acid, and a self-discharge that is only 0.02 percent per month, a fraction of lead acid and Li-ion. Battery for Fujitsu LifeBook B6000D
As long as the Battery for Fujitsu LifeBook B6110D is based on the electrochemical process, limitations will remain. Some claims may be simply too good to be true and the real test will be everyday field use.Batteries seem to advance slowly and this is especially apparent when comparing batteries to the rapid developments of other technologies. This is not idleness on part of the research engineers but overcoming insurmountable technical hurdles to meet the requirements of long life, high specific energy (capacity), safe operation, minimal maintenance and low price. In addition, the Battery for Fujitsu LifeBook B6110 must work at hot and cold temperatures, deliver high power on demand, charge quickly and be environmentally friendly. No battery meets all criteria and manufacturers optimize the characteristics to meet user demands.
There are two basic types of lead acids: the starter Battery for Fujitsu FPCBP205 and the deep-cycle battery. The starter battery is designed to crank the vehicle engine, and the deep-cycle battery is made to provide continuous power in golf cars, wheelchairs, forklifts and standby systems. From the outside, these batteries look alike but there are fundamental differences in design. While the starter Battery for Fujitsu FPCBP205AP is made for a high peak power of several hundred amperes and cannot be deep cycled, the deep-cycle battery has moderate power output but permits cycling. Let us now look at the mechanical differences between these two battery systems. Starter batteries have a very low internal resistance and this is achieved by adding extra plates for maximum surface area (Figure 1). The plates are thin and the lead is applied in a sponge-like form that has the appearance of fine foam.Battery for Fujitsu P345830-01
This extends the surface area on the plates to achieve low resistance and maximum power density (current handling). Plate thickness isless
important because the discharge is short and the Battery for Fujitsu FPCBP160recharges while driving;the
emphasis is on power rather than capacity.The starter battery has many thin plates in parallel to achieve low resistance with high surface area. The starter battery does not allow deep
Starter batteries are marked with CCA (cold cranking amps), which represents the amount of current a Battery for Fujitsu FPCBP160AP can deliver at cold temperature. To test CCA under SAE J537, the Laptop Battery is cooled to –18°C (0°F) and discharged for 30 seconds at the rated CCA. A battery marked 600 CCA would be discharged at 600A for 30 seconds at –18°C (0°F). During discharge, the voltage cannot drop below 7.2 volts. If it does, the battery fails and the CCA test must be repeated to find the true CCA value. (See also “How to measure CCA” and “How to Measure Capacity.” Most starter batteries such as Battery for Fujitsu FPCBP159 are also marked with RC (reserve capacity) or Ah (ampere hours). Deep-cycle lead acid Acer Battery are built for maximum capacity and high cycle count, and this is achieved by making the lead plates thick (Figure 2). Although the battery is designed for cycling, full discharges still induce stress. It is advised to keep the cycles moderate by preventing a full discharge and allowing the Battery for Fujitsu FPCBP159AP to charge more often. Deep-cycle batteries are marked in Ah, indicating the current the battery can deliver over time. At 1C, for example, a 60Ah battery should deliver 60A for one hour. (See also “What is C-Rate?”)A starter battery cannot be swapped with a deep-cycle Battery for Fujitsu FMVTBBP111 and vice versa.
There are a few rare ones that are precharged, but not actually low self discharge. The pros of LSD type NIMH are the same chemistry as the regular ones, but have that different design of the separator. The drawbacks are slightly lower capacity since the design difference does take up more room inside the Battery for Fujitsu FMVTBBP112 . There were some 3100MAH regular NIMH available in AAs, but high self discharge rates make these batteries impractical, except for the highest drain devices, like a portable TV that uses AAs. The same problem with early failure led to Energizer abandoning the higher capacity 2500MAH AA cells.Invented by the French physician Gaston Planté in 1859, lead acid was the first rechargeable Battery for Fujitsu FPCBP207 for commercial use. Early models were flooded, and during the mid-1970s the sealed or maintenance-free versions emerged in which the liquid electrolyte is transformed into moistened separators and the assembly is placed in a sealed enclosure. Safety valves control the venting of the gases generated during charge and discharge. The sealed enclosure simplifies transportation and allows installing the Battery for Fujitsu FPCBP207AP sideways without spillage.
While a senior may be tempted to install a low-cost starter Battery for Fujitsu FPCBP208 instead of the more expensive deep-cycle in his wheelchair, the starter battery won’t last because the thin sponge-like plates would quickly dissolve with repeated deep cycling. Trucks, buses, public safety and military vehicles use a combination of starter/deep-cycle battery, but these are big and heavy. As a simple guideline: the heavier theBattery for Fujitsu FPCBP208AP , the more lead it contains, and the longer it will last. Table 3 compares the typical life of starter and deep-cycle batteries when deep-cycled.Ever since Cadillac introduced the electric starter motor in 1912, lead acid remains the natural battery choice for engine cranking. Lead is toxic and environmentalists are trying to find an alternative. Europe succeeded in keeping nickel-cadmium batteries out of consumer products, and authorities want to do the same with the starter Battery for Fujitsu SIEMENS S26391-F421-L200 . The alternative is lithium-ion, but the cold-start performance is not as good as lead acid and the price is too high.
Asus K52JC Laptop Battery
On the surface, driving on electricity is cheaper than burning gasoline but today’s low fuel prices, uncertainty about the Asus u53jc-a1 Charger ’s service life, along with unknown abuse tolerances and high replacement costs, will reduce the incentive for buyers to switch from a proven concept to an electric vehicle. If a driver wants the 500km range between fill-ups that is achievable with a gasoline-powered car,the Asus u53jc-xx049x Charger would need a capacity of 75kWh according toTechnology Roadmaps Electric and Plug-in Hybrid Electric Vehicles (EV/PHEV). At an estimated $400 price tag per kWh, such a battery would cost over $30,000 and weigh nearly a ton. Technology Roadmap compares the energy consumption and cost of gasoline versus electric propulsion as follows: An EV requires between 150 and 200Wh per km depending on speed and terrain. At a consumption of 200Wh/km and an electricity price of $0.15 per kWh, the energy cost to drive an EV translates to $0.03 per km. This compares to $0.06 per km for an equal-size gasoline-powered car and $0.05 per km for diesel. The price estimations exclude equipment costs, service and eventual replacement of the battery and IC engine.Asus u53jc-xx086v Charger
To prepare for the EV market, researchers and battery manufacturers have invested significant resources to develop better Asus u53jc-xx108v Charger technologies, and many are taking advantage of generous government incentives. But there is a danger. For the sake of optimal specific energy, some start-up companies are experimenting with aggressive design concepts using volatile chemicals that compromise safety. They may push the envelope by announcing impressive advances, emphasizing only the pros and squelching the cons. Such behavior will get media attention and entice venture capitalists to invest, however, hype contributes little in finding a solution that will improve existing battery technologies. The ASUS PRO23(All) Charger will determine the success of the EV, and until improvements are achieved in terms of higher specific energy, longer service life and lower cost, the electric powertrain may be limited to a niche market. While governments spend large sums in the hope of improving current battery technologies, we must realize that the electrochemicalASUS Eee PC 1201T Charger has limitations. This was made evident when motorists tested eight current and future models with electric powertrains and attained driving ranges that were one-third less than estimated. Table 3 lists a rundown of range and charge times. ASUS Eee PC 1201PN Charger
The electric cars were tested in real-life conditions on highways, over mountain passes and under winter conditions in 2010.he travel distance is less than advertised; ASUS Eee PC 1201P Charger aging will shorten the range further. To make the electric vehicle affordable in the near future, early models will need to be light and restricted to short driving distances of 160km (100 miles) or less. Battery weight and cost will set these limitations. The successful EV will likely be a subcompact commuter car owned by drivers who adhere to a tightly regimented driving routine and follow disciplined recharging schedules. If the ASUS Eee PC 1201NL Charger delivers as promised, these drivers will indeed realize cost savings and reduce greenhouse gases. Another benefit is reduced noise on city streets. The environmental benefit of driving an EV is limited unless renewable resources provide electricity to charge the batteries. Burning coal and fossil fuel to generate electricity simply shifts pollution out of congested cities to the countryside. The electricity in the USA is being generated by burning coal (50%), natural gas (20%) and nuclear (20%). Renewable resources to generate electricity are hydro (8%) and solar and wind (2%). One of the advantages of the EV is that it can be charged at night when the power grid has extra capacity.ASUS Eee PC 1201N Charger
Current fuel gauge technologies are fraught with limitations and this came to light when users of the new iPad assumed that a 100 percent charge on the fuel gauge should also relate to a fully charged Asus K52DE Battery. This is not always so and users complained that the battery was only at 90 percent.The modern fuel gauge used in iPads, smartphones and laptops read SoC through coulomb counting and voltage comparison. The complexity lies in managing these variables when the Asus K52DR Battery is in use. Applying a charge or discharge acts like a rubber band, pulling the voltage up or down, making a calculated SoC reading meaningless. In open circuit condition, as is the case when measuring a naked battery, a voltage reference may be used; however temperature and Asus K52F Battery age will affect the reading. The open terminal voltage as a SoC reference is only reliable when including these environmental conditions and allowing the battery to rest for a few hours before the measurement. Asus K52J Battery
In the case of the iPad, a 10 percent discrepancy between fuel gauge and true Asus K52JB Battery SoC is acceptable for consumer products. The accuracy will likely drop further with use, and depending on the effectiveness of a self-learning algorithm, battery aging can add another 20-30 percent to the error. By this time the user has gotten used to the quirks of the device and the oddity is mostly forgotten or accepted. While differences in the runtime cause only a mild inconvenience to a casual user, industrial applications, such as the electric powertrain in an electric vehicle, will need a better system. Asus K52JC Battery
Improvements are in the work, and these developments may one day also benefit consumer products. Coulomb counting is the heart of today’s fuel gauge. The theory goes back 250 years when Charles-Augustin de Coulomb first established the “Coulomb Rule.” It works on the principle of measuring in-and-out flowing currents. Coulomb counting also produces errors; the outflowing energy is always less than what goes in. Asus K52JE Battery
Inefficiencies in charge acceptance, especially towards the end of charge, tracking errors, as well as losses during discharge and self-discharge while in storage contribute to this. Self-learning and periodic calibrations through a full charge/discharge assure an accuracy most can live with. Many perceive a Asus K52JK Battery as being an energy storage device that is similar to a fuel tank dispensing liquid fuel. For simplicity, a battery can be seen as such; however, measuring stored energy from an electrochemical device is far more complex. The process is fraught with confusion, is poorly understood, and this article describes the challenges of measuring energy from a Asus K52JR Battery . Before looking into the fuel gauge concept deeper, we assume that state-of-charge (SoC) is the relative stored energy in a battery that can be released under prevailing conditions. The prevailing conditions are mostly unknown to the battery user, and besides SoC they include the actual battery capacity, load currents and operating temperature. State-of-function (SoF), the all-encompassing criteria that includes SoC, capacity and delivery, is difficult to measure and remains mostly guesswork. Considering these limitations, one can appreciate why most Asus K52N Battery fuel gauges are inaccurate.
Unlike a fuel tank that has a known volumetric dimension, the fuel gauge of a Asus K62 Battery has unconfirmed definitions. Other than the open circuit voltage (OCV), which only approximates SoC, a battery does not have fundamental internal parameters that relate to SoC. The Ah rating, which the manufacturer specifies, only applies for the short time when the Asus N82JV Battery is new. In essence, a battery is a shrinking vessel that takes less energy with each subsequent charge, and the stated Ah rating is only a reference of what the battery should be holding. The battery is not an energy container per se that guarantees a given amount of energy under all conditions but exhibits a human quality delivering on prevailing situations. A common error in fuel gauge design is ignoring the aging aspect by assuming that the Asus N82JQ Battery will stay perfect. Such oversight will limit the service to about two years before the readings become inaccurate. The scaling of most fuel gauges is analogous to liquid fuel: full charge indicates 100% and empty is zero percent. Zero is the point when the Asus N82JG Battery reaches the low voltage knee at the end of discharge.
Discharging a Asus N82J Battery rated at 1Ah should provide a current of 1A for one hour. This only holds true while the battery is new and discharged at room temperature. If the capacity shrinks to 50%, the fuel gauge of a fully charged battery will still show 100% but the expected one-hour runtime is reduced to 30 minutes. Running the Asus N82EI Battery below freezing reduces the time further. For the casual cellphone or laptop user, this error only causes inconvenience; however, the problem becomes more evident with electric vehicles and other critical battery operated devices that depend on the remaining runtime to reach the destination. Modern fuel gauges adapt to prevailing conditions by “learning” how much energy the battery was able to deliver on the previous discharge. Learning, or trending, may also include charge time because a faded Asus N82E Battery charges quicker than a good one. It is also common to measure the internal battery resistance by observing the voltage drop; however, capacity estimation based on raising resistance no longer works well because the modern Li-ion maintains low resistance through most of its service life.Asus K62JR Battery
Capacity is best measured by discharging a fully charged Asus K62J Battery at a constant current and reading the elapsed time. Most rechargeable batteries for portable use are specified at 1C discharge. A battery rated at 1Ah would therefore discharge at 1A. The rated discharge of primary cells, such as alkaline, is much lower. Measuring battery capacity by discharge/charge is impractical and stresses the Asus K62F Battery .The fuel gauge has the inherent drawback of needing periodic calibration, also known as capacity re-learning. This is done to correct the tracking error that develops between the chemical and digital battery on repeated charge and discharge cycles. Calibration could be omitted if the battery received a periodic full discharge at constant current followed by a full charge. The ASUS U80V Charger would reset with each full cycle and the tracking error would be kept at less than one percent per cycle. In real life, however, a battery may be discharged for a few minutes with a load signature that is difficult to capture, then partially recharged and stored with varying levels of self-discharge depending temperature and age. ASUS U81 Charger
Manual calibration is possible by running the ASUS U81A Charger down until “Low Battery” appears. This can be done in the equipment or with a battery analyzer. A full discharge sets the discharge flag and the subsequent recharge the charge flag. Establishing these two markers allows SoC to be calculated by tracking the distance between the flags. For best results, calibrate a device in continuous use every three months or after 40 partial cycles. If the device applies a periodic deep discharge on its own accord, no additional calibration will be required. Figure 1 shows the full-discharge and full-charge flags.Calibration occurs by applying a full charge, discharge and charge. This can be done in the equipment or with a battery analyzer as part of ASUS U81A-RX05 Charger maintenance.
The largest decrease in Asus u53f Charger prices is expected to occur between now and 2020, with a more gradual decline thereafter. According to BCG, the anticipated calendar life of the battery will be 10–15 years. E-One Moli Energy, a manufacturer of lithium-ion cells for power tools and electric vehicles, points out that the cost of Li-ion can be reduced to $400 per kWh in high volume, however, the peripheral electronics managing the Asus u53j Charger , including heating and cooling, will remain high, essentially doubling the price of a pack. Reductions are also possible here, and E-One Moli Energy predicts that the electronics will only make up 20 percent of the cost of an EV battery in five years. These forecasts are speculative, and other analysts express concern that the carmakers may not be able to achieve the long-term cost target without a major breakthrough in battery technology. They say that the current Asus u53jc Charger cost is 3 to 5 times too high to appeal to the consumer market.
Battery for ACER Aspire 7560
The duty of Dell Inspiron 1520 laptop battery on board aircraft is to run navigation and emergency systems when the Auxiliary Power Unit (APU) is off or if an emergency occurs. In the event of an engine failure, the batteries must supply energy from 30 minutes to three hours. Each aircraft must also have enough Dell Inspiron 1521 laptop battery power to facilitate a safe landing. Starting a large aircraft involves two stages. Most commercial jet aircraft use flooded nickel-cadmium to first engage the APU located at the tail end of a plane. The APU takes significantly longer to start and requires more energy than cranking the reciprocating engine in a vehicle. The spooling speed of the APU must be sufficiently high to attain compression for self-sustained ignition. Dell Inspiron 1720 laptop battery
This takes about 15 seconds and consumes 15kWh of energy. Once running, an air compressor or hydraulic pump jumpstarts the large jet engines. On smaller aircraft, the battery must spool each engine for 25–40 seconds at high current. This puts far more stress on a Dell Inspiron 1721 laptop battery than starting a car, and the batteries must be built accordingly.
Smaller aircraft may use a sealed lead-tin Dell Vostro 1500 laptop battery that is heavier than NiCd but has lower maintenance. The 12 and 24V aviation batteries are rated in IPP and IPR rather than CCA, as is common in the auto industry. Modern jet fighters spool the engines with lithium-ion batteries. Durability and good performance at low temperature are the main reasons for the continued use of nickel-cadmium Dell laptop Vostro 1700 battery in aviation. Most are flooded and require high maintenance that includes exercising to eliminate memory. The service consists of totally discharging the battery and placing a shortening strap across each cell for 24 hours. Each battery is also checked for capacity with a battery analyzer. Although aircraft carry many batteries aboard, their sole purpose is to provide starting and backup power. No passenger would dare fly to Europe or Asia on battery power alone. Dell Latitude E6510 laptop battery
One can clearly see the limitations of batteries for large engines, and we need to rely on fossil fuel a little bit longer. (Let’s not give away this precious nonrenewable resource too cheaply by allowing people to squander the oil, especially if alternative energy storage devices, i.e. the batteries, can be used for ground transportation.) Dell Precision M2400 laptop battery
University students converting an old Volkswagen Beetle to an electric powertrain to drive around the globe would shop for a lower-priced alternative and likely find a source in China. China offers Li-ion mono-blocks in 40–800Ah sizes at attractive prices. Dell Precision M4400 laptop battery works well for less demanding applications and are great for experimental uses. There is, however, concern about safety and reliability when placed into the hands of common consumers. The need of a Dell Precision M6400 laptop battery management system becomes evident. It prevents any cell from exceeding 4.25V/cell on charge and dropping below 3.00V on discharge. As the cells age, cell capacities diverge and this affects charge and discharge times. On charge, a weak cell reaches full charge first, and without limit the voltage would rise further. On discharge, the weak cell discharges first and needs protection from voltage depletion. Weak cells are at a disadvantage; they get stressed the most and lose capacity quicker than the strong cells in a pack.Dell Precision M4500 laptop battery
Forklifts use mostly lead acid Dell Latitude D630 ATG laptop battery . Here, the weight is of little concern, however, long charging times is a disadvantage for warehouses operating 24 hours a day. This limits the fleet operation to only one shift. Fuel cell makers are gaining inroads by offering charging while the vehicle is in use. The addition of a fuel cell serving as onboard charger reduces Dell Latitude D630 UMA battery size, but eliminating the battery entirely is not possible. The fuel cell has poor response characteristics on power demand and lacks the needed power bandwidth; the battery fills in for these shortcomings. Read more about the fuel cell. The heavier the wheeled application, the more difficult it becomes to use batteries as the main powertrain. This does not prevent engineers from looking into alternate power sources to replace polluting diesel engines. One application under consideration is to use Dell laptop Latitude D630c battery for the Automatic Guided Vehicle (AGV) systems at ship ports, but battery size and charging times make this unfeasible. AGVs run 24 hours a day and the vehicles cannot be removed for lengthy charging. An automated battery exchange is being considered by removing the 10-ton, 300kWh lead acid battery from the vehicle and putting it on charge. Cost and impracticality may limit such an approach.Dell laptop Precision M2300 battery
Ever since the starter motor was invented in 1912, lead acid Dell Studio 1440 laptop battery began cranking engines and providing power for lighting and ignition. Low cost and high current loading make lead acid an almost perfect candidate for starter applications. A typical starter battery has about 720 watts, and one of its unique qualities is good cranking ability even when the capacity fades to 25 percent or less. Hybrids, plug-ins and electric vehicles use larger batteries, and Figure 1 compares the Dell Studio 1440n laptop battery sizes. While the hybrid can get by with a battery twice the size of a starter battery, plug-in vehicles carry batteries in the 5–15kWh range, and the pure EV includes a monster battery ranging from 20 to 50kWh. Read more about the Electric Vehicle.While starter and hybrid batteries are tolerant to capacity fade, a weak EV battery travels shorter distances. The automotive industry is very conservative, and the choice of Dell Studio 14z laptop battery for most modern electric powertrains is lithium-ion with a nickel-manganese-cobalt mix (NMC). These cells provide stable service for many years and have low self-discharge, even when aging. NMC is also a desirable battery for power tools. Another strong candidate is Li-phosphate, a battery that delivers the best cycle life and is safe but has higher self-discharge than NMC. This complicates battery management, especially if the cells age differently.Dell Studio 14zn laptop battery
Whether this can be achieved by IC powered vehicles, hybrid or pure electric is immaterial. Battery for ACER Aspire 7551-3068 can be very useful in some applications and absolutely useless in others. While many other famous brands like Porsche, Land Rover, BMW and Mercedes too had variants of the hybrid on the show, what took the crowd by surprise was that the most affluent car brand in the world has started adopting go green philosophy.This is much related into this kind of review.All vehicles require fuel. Surely the objective should be to find a way of maximizing the most efficient use of fuel, while at the same time minimizing the adverse effect on the environment? Battery for ACER Aspire 7551G
When ingenious people have tried as hard and as long as they have and the Battery for ACER Aspire 7551G-5821 still don’t give the required range, it is safe to assume they are not going to do so for quite a long time to come.There are diesel-electric trains and diesel-electric ships. Why not diesel-electric automobiles and trucks. Not talking about hybrid. Internal combustion engines are very inefficient when used over a relatively wide speed range. They become surprisingly efficient when run at constant speed, optimum horsepower. Easier to make totally silent, free of resonance and vibration. Electric motors are generally super-efficient right down to relatively slow speeds. Battery for ACER Aspire 7552G
Changing the focus away from cars and highways would, for the first time in 100 years, hand the cities back to the people who are the rightful owners. Such a change in direction would make our dwelling places more enjoyable, and future generations would thank their forefathers for the prudent planning. It’s worth noting that some of the most desirable cities were built before the invention of the car. Designers had the movement of people in mind. This, I believe, was done more out of necessity than foresight.Battery for ACER Aspire 7552G-5107
Europe is leading in the list of the most desirable and livable cities; North America trails behind.The crowd who came to see Rolls-Royce’s Phantom, which was on display at the Geneva Motor show were in for a surprise to find Battery for ACER Aspire 7560 and electric motors under the bonnet, in the place of a well polished. These electric devices were used to run the 2.5 tone giant. This was just one of the many concept-cars that were present at the motor show. It just goes to show how sensitive the top guns in the industry are, to their contribution to global warming. Lesser luxurious models like Lexus (Toyota’s luxury brand) displayed seven units of gas-electric hybrid models for the motor show. Battery for ACER Aspire 7560G
Early satellites used exclusively NiCd batteries. This, by the way, exposed the “memory” phenomenon in that NiCd could remember the amount of energy that was used on a tightly regulated discharge schedule. If the discharge lasted longer than normal, the Battery for Dell G0767 would suffer a mysterious voltage drop. Today, most modern satellites, including the Hubble, use nickel-hydrogen cells. One of the enduring qualities of nickel-hydrogen is long cycle life. To optimize longevity, engineers over-design the batteries to achieve a small depth of discharge of only 6 to 10 percent. High price and large size limit nickel-hydrogen Battery for Dell M0270 for satellite applications. Each cell has the appearance of a small steam engine and costs about a thousand dollars. These batteries are specially made for the application. Satellites designed with a life span of five years or less often use lithium-ion. A new breed of Li-ion is being developed that promises to last 18 years. This would satisfy most satellite requirements and replace the heavier nickel-based systems. The Battery for Dell N0988 in development is a large 140Ah cell. Li-ion is lighter in weight, is easier to charge and has a lower self-discharge than the nickel-based battery systems of old. Battery for Dell P0382
Furthermore, industrial versions of Li-ion promise to exceed the Battery for Dell W0391 life span of nickel. Stationary batteries are almost always lead acid. Size and weight is of lesser concern. The limited cycle count does not pose a major problem because the batteries are seldom deep discharged. Large stationary systems are mostly mature flooded systems that provide a reliable and economical service, but they need regular maintenance in form of checking the electrolyte level and adding water. Battery for Dell W0465
Automatic watering reduces some of this routine maintenance work. Valve-regulated lead acid (VRLA) offers a lower-cost alternative to flooded lead acid. Being maintenance-free, the Battery for Dell 083KV can be installed and forgotten. This benefit is often taken to the extreme in that the batteries are neglected. In the absence of adding water, maintenance comes in the form of checking the voltage, internal resistance and verifying capacity. Flooded nickel-cadmium Battery for Dell 1894W is used in applications that need regular deep cycling or are exposed to hot and cold temperatures. NiCd for stationary applications is about four times the price of lead acid; however, the vendors say that improved longevity will make up for the higher cost. Flooded nickel-cadmium batteries are non-sintered and don’t have memory.Battery for Dell 2127U
Battery manufacturers are introducing NiMH and Li-ion Battery for Dell 4127U for stationary uses. The advantages are wide temperature range and the ability to deep cycle and fast charge. These batteries have a small footprint, need minimal ventilation and have a long life. When storing energy from renewable sources, such as from solar cells, NiMH and Li-ion do not suffer from sulfation as lead acid does when not fully charged. Li-ion has the added benefit of being light. It can be made semi-portable for temporary systems and remote installations. Battery for Dell 8027U
NiMH and Li-ion are more expensive than lead acid and the industry will continue to rely on lead acid batteries for common UPS systems. Experts predict that alternate chemistries will find market acceptance for general use once the price can be lowered to $200/kWh, the cost of a lead acid system. Lithium-based stationary Battery for Dell BAT-I5000 cost as much as $1,500/kWh.
A German firm looked at using lithium-ion Battery for Dell BAT30WL for AGVs to speed up charging and reduce weight. While many smaller applications have switched to this new battery system, Li-ion is not yet ready for very large applications; the cost is prohibitive and the safety of such systems remains in issue. On large-scale applications, Battery for Dell IM-M150261 continue to have a hard time competing with fossil fuel in terms of specific energy. While a modern Li-ion battery produces about 120Wh/kg of energy, the net calorific value (NCV) of fossil fuel is 12,000Wh/kg, or one liter, an energy that is one hundred times higher. Even at a low efficiency of 25 percent, which an IC engine delivers, Battery for Dell 2377T doesn’t come close to this delivery of power. Will Li-ion advance to take this spot? Perhaps not in our lifetime. Even if modern technology enabled large energy storage devices, charging these mega-batteries in an hour could dim a city. Replacing large diesel engines with batteries does not make commercial sense for now, nor can the fuel cell fill the spot. We need to breathe diesel-polluted air a little longer.Battery for Dell F1589A
Simply get in and begin driving on electric power. At, say 10 miles, the engine starts. The engine is pre-warmed by hot water from the electric motor. As soon as the engine starts, the cooling water is diverted to the radiator. When the Acer UM09G31 battery reaches 80% charge, the engine is stopped. The car continues on electric power. The engine starts and stops repeatedly. It is well silenced and unobtrusive. Can go 1000 miles on a tank. Single pedal driving. Press accelerator to speed up - keep steady to maintain speed - release to slow the car on regenerative braking. Brake pedal used to hold car at a stop and for emergencies. Absolutely brilliant. Takes five minutes to get used to and then you’re hooked for life. Acer UM09G51
Every component is used within the “comfort zone” of its engineering and commercial capability. The most efficient, most acceptable way of converting the energy that is in a fuel to driving a set of wheels. Optimum use of technology.JP White - The 10-20% heat given off by the electric motor can either be thrown away uselessly through air cooling, or be put to use to excellent use to pre-warm the IC engine. Acer UM09H31
What I described is not a Chevy Volt. My proposal is a liquid fuel driven vehicle with an electric transmission. An electric transmission that has an “energy memory” of 10 miles. Possibly less, not more. Relatively inexpensive lead-acid Acer UM09G41 battery. This would help to prevent the catastrophic depreciation in value of pure and near-pure electric vehicles. The most likely time these vehicles are traded in is when the battery is nearly due for replacement. With a new Acer UM09H41 battery costing USD15,000, these cars end up with a near-zero trade-in value. At the fundamental level, the objective is to utilize energy from a source to propel a vehicle at the highest efficiency. This will be a liquid fuel, whether from petroleum, conventional biomass or algae. Electricity taken from the power grid in moderation - yes, but not in huge quantities. Algae looks the most promising way of converting solar into usable fuel. Acer AS09B56 battery
For the time being electricity must be coal, gas or nuclear. There is likely to be a move to algae derived fuel for all consumption in the coming fifty years. Carbon will become the most recycled material of all time. Acer BT.00803.005 I built an electric car in 1980. Used it constantly for everyday travel for a year, covering 10,000 kilometers. The vehicle was powered by 14 specially developed 12 volt deep cycle batteries. This experience taught me that the electric control part, that is the one pedal control, is absolutely divine but to forget about pure Acer AS09D36 battery battery.The next step towards electrifying the powertrain is moving to the plug-in hybrid electric vehicle(PHEV). The PHEV is a commuter car with a serial configuration that runs mostly on battery. It has no mechanical powertrain and relies solely on electric motors for propulsion. Instead of the IC engine transferring kinetic power directly to the wheels, as is common with the HEV, the IC engine engages only when the batteries get low to activate a generator and produce electricity for the electric motors. A fully charged Battery for ASUS 70-NU51B1000Z is good for about 50km (30 miles), and the IC engine with generator has adequate power to drive beyond this distance. The PHEV is ideal for commuting and doing errands in the neighborhood. When driving on the batteries there is no gasoline consumption, nor is there a gas tax and the roads are virtually free to use. PHEV users will notice only small increases in their utility bills for charging the Battery for ASUS 70-NU51B2100PZ at home. No more hefty bills at gas stations — or so it seems.
Unlike the parallel HEV that relies on the Battery for ASUS 90-NFU1B1000Y for brief moments, the PHEV battery is in charge depletion mode,meaning that the battery must work harder than with the HEV. This adds stress and reduces longevity. While a capacity drop to 39 percent, as seen on the Toyota Prius battery in Table 12-3, has little effect on the overall performance of an HEV, the same loss on a PHEV would reduce the driving distance from the specified 50km to 20km (30 to 12 miles) before the IC engine kicks in. This would likely call for a Battery for ASUS A32-F70 . The Chevy Volt is one of the first PHEV cars. The 181kg (400 lb) battery has 220 Li-ion cells and stores 16kWh of energy to drive a 149hp (111kW) electric motor. Each prismatic cell has the size and shape of a paperback book. Temperature control keeps the battery at 20–25°C (68–77°F) during driving and while charging. An 115VAC outlet fills the Battery for ASUS A32-M70 in eight hours; a 230VAC reduces the charging time to three hours. GM specifies a commute of 64km (40 miles) before the 1.4-liter four-cylinder IC engine kicks in to activate the 53kW AC generator that powers the electric motors. Capacity fade with aging will manifest itself in reduced driving distance before the IC engine kicks in.Battery for ASUS A41-M70
As good as the PHEV sounds, the long-term savings may be smaller than expected, especially if a Battery for ASUS A42-M70 necessary during the life of a car. With careful use and proper maintenance, a modern car can go for 15–20 years on the original IC engine; a battery replacement with the PHEV will likely be necessary at the car’s mid life point. Menahem Anderman, a leading expert on advanced automobile batteries, says we still haveno suitable battery for the PHEV and expresses concern that the reliability of lithium-ion technology for automotive applications has not yet been proven. To obtain an acceptable driving range, the PHEV needs aBattery for ASUS L0690LC that is five times larger than that of the HEV. While the HEV gets by with a moderate-size battery of 1–2kW, the PHEV battery is in the 5–15kWh range and costs up to $12,000. Car manufacturers must provide an eight-year warranty and the capacity threshold has yet to be determined.Battery for ASUS L082036
ASUS V2S-4S065G Charger aging is an issue that car manufacturers avoid mentioning in fear of turning potential buyers away, and this concern increases with the PHEV. While we accept runtime declines on our cell phones and laptops and adjust to lower expectations accordingly, a car buyer paying big money for new technology may not be so forgiving. The motorist is familiar with ample power and minimal degradation in performance as the car ages and when driving in cold temperatures. The ASUS V2S-A1 Charger cannot match this performance, and the owner will need to tolerate a decrease in distance driven during winter, as well as accept a small reduction in delivered mileage with each advancing year due to battery aging. While a $2,000–3,000 ASUS V2S-B1 Charger replacement is feasible for an HEV, the $10,000–12,000 PHEV battery will determine the life of the car. Modern cars do more than provide transportation; they also include amenities for safety, comfort and pleasure. The most basic of these are the headlights and windshield wipers. Buyers also want heating and air-conditioning, services that are taken for granted with IC-powered vehicles but will need to be used sparingly in a PHEV. Heat that is a natural by-product from the IC engine must be generated with battery power in the PHEV. The larger concern is air-conditioning; an AC unit to cool the cabin draws 3–5kW of power.ASUS Eee PC 1008 Charger
Many PHEV buyers will overlook these concerns; they value the environmental benefit and the pleasure of driving a vehicle powered by electricity. The drivers will adapt to a new lifestyle routine — wherein they charge their vehicle at night when the electric grid has excess capacity and drive measured distances during the day. Users of these cars will also appreciate the new charging stations being installed at workplaces and shopping malls. Cars with electric powertrains have been around for more than 100 years. ASUS Eee PC 1008H Charger
At the turn of the century, a car buyer had three choices of propulsion system: electric, steam, and internal combustion (IC) engine, of which the IC engine was the least common. The electric cars appealed to the upper class and the vehicles were finished with fancy interiors and expensive materials. Although they were higher in price than the steam and gasoline-powered vehicles, the wealthy chose the electric car for its quiet and comfortable ride over the vibration, smell and high maintenance of gasoline-powered counterpart. Best of all, the electric vehicle (EV) did not require changing gears. ASUS Eee PC 1008HA Charger
Back then, the knuckle busting, wrist-wrenching chore of shifting gears was the most dreaded task for driving a gasoline-powered car. Nor did the EV need manual cranking to start the motor, a task the upper class did not want to be seen doing. Since the only good roads were in town, the limited range of the EV was no problem, and most of the driving was local commuting. Production of the EV peaked in 1912 and continued until the 1920s. ASUS Eee PC 1008HA-PU1X-Pi Charger
The ASUS U20 Charger of choice for the EV was lead acid. For an added fee, the buyer could fit the Detroit Electric with a nickel-iron (NiFe) battery, a technology Thomas Edison promoted. NiFe had a cell voltage of 1.2V, was robust and could endure overcharging and repeated full discharging. Being a good businessman, Edison continued to promote NiFe over lead acid by boasting its good performance at subfreezing and hot temperatures. Then in 1914, a devastating fire destroyed the Edison factory and the popularity for this ASUS U20A Charger began to decline. On a purely technological level, NiFe provided only a slightly better specific energy to lead acid and was expensive to manufacture. In addition, the battery performed poorly at low temperatures and the self-discharge was 20–40 percent a month, considerably higher than lead acid.ASUS Eee PC 1008HA-PU1X-BK Charger
The Detroit Electric, one of the most popular EVs then, was said to get 130km (80 miles) between ASUS U20A-B2 Charger . Its top speed was 32km/h (20mph), a pace considered adequate for driving. Physicians and women were the main buyers. Thomas Edison, John D. Rockefeller, Jr. and Clara Ford, the wife of Henry Ford, drove Detroit Electrics. Figure 1 shows Thomas Edison with his 1914 Detroit Electric model.Thomas Edison felt that nickel-iron was superior to lead acid for the EV and promoted his more expensive ASUS U50 Charger . Henry Ford’s mass-production and cost-cutting measures in 1912 were not the only reason for the shift towards gasoline-powered cars. The invention of the starter motor, the need to travel longer distances, and the discovery of Texas crude oil made the IC engine more attractive and affordable to the general public. The EV became a thing of the past until the early 1990s when the California Air Resources Board (CARB) began pushing for more fuel-efficient and lower-emission vehicles. It was the CARB zero-emission policy that prompted General Motors to produce the EV1. Available for lease between 1996–1999, the EV1 initially ran on an 18kWh lead acid ASUS Eee PC 1008HA-PU17-WT Charger .
The ASUS U80 Charger fits under the floor of the car, weighs 272kg (600lb) and is estimated to cost $15,600 (2010).The lead acid was later replaced with a 26kWh NiMH pack. Although the NiMH gave an impressive driving range of 260km (160 miles), the EV1 was not without problems. Manufacturing costs rose to three times the cost of a regular gasoline-powered car, and in 2001 politicians changed the CARB requirements, which prompted General Motors to withdraw the EV1, to the dismay of many owners. ASUS U80A Charger
The 2006 documentary film Who Killed the Electric Car? gives a mixed impression of government-initiated programs for cleaner transportation. To match the range of an IC-powered vehicle, the EV needs a battery capable of delivering 25–40kWh. This is twice the battery size of a PHEV and 10 times that of the HEV. The electro-chemical ASUS U50A Charger is not the only expense added to the EV; the power electronics to manage the battery make up a large part of the vehicle cost. An EV without a battery is roughly the same cost as a traditional gasoline-powered car. Figure 2 shows the ASUS U50VG Charger of the Nissan Leaf as part of the under-chassis installation.The Leaf includes a 24kWh lithium-ion battery with a city driving range of 160km (100 miles).
Battery for Fujitsu FPCBP222AP
I agree that without particular maintenance such system is very good but on the other hand such system is usually installed far away and on inaccessible terrain and with 1 year of life time it rises a lot of price of such system…It is interesting to observe that Asus 70-OA1G1B1100 AP21-MK90 batteries cared for by a single user generally last longer than those operating in an open fleet system where everyone has access but no one is responsible.
A personal user is one who operates a mobile phone, a laptop or digital camera for business or pleasure. He or she usually cares for the Asus 70-OA111B1000 battery and makes all efforts to follow the recommended guidelines. The desire to care for the batteries is not witnessed among fleet users. The packs belong to a pool of unknown batteries and operate in a sharing arrangement.With time, the user gets to know the Charger for Asus A32-M50 like a good friend, and critical failures are rare because the owner adjusts to the changing condition, lowers expectations and replaces the pack when it becomes a nuisance. While an individual user can live with reduced runtime, the fleet operators have little attachment to the Charger for Asus A32-N61 and show no patience with anything that is less than perfect. They grab a battery from the charger and expect it to last through the shift. At the end of the day, the battery is plugged into the charger again, ready for the next user. Having serviced Charger for Asus A32-X64 for fleet users for many years, I noticed shorter service life on fleet packs than those for personal use.
How can fleet batteries be made to last longer? I made an interesting observation on Charger for Asus A33-M50 life in comparing two defense organizations, the US Army and the Dutch Army, both of which I had the pleasure of visiting. The armies in question use fleet batteries and deploy them similarly with the following exception. The US Army issues batteries without a maintenance program. If the Charger for Asus L062066 fails, another pack is released, no questions asked. Little or no care is taken and the failure rate is high. The Dutch Army, on the other hand, has moved away from the open fleet system by making the soldiers responsible for their batteries. The entrusted packs become part of their personal belongings, similar to food and clothing. The army made the change to reduce operational costs and improve reliability. The results are startling. Since the Dutch Army adapted this new regime, the failure rate has dropped considerably and Charger for Asus L072051 performance has increased. Unexpected downtime has almost been eliminated. I should mention that the Dutch Army used nickel-cadmium batteries at the time of the study.
Each pack received periodic maintenance on a Cadex battery analyzer to prolong service life. Charger for Asus L0790C6 that did not meet the required 80 percent target capacity were reconditioned, and those failing to meet the target setting were replaced. Meanwhile, the US Army had switched to nickel-metal-hydride, a chemistry that is known to offer higher capacity but shorter service life. Today, both armies use lithium-ion on their new equipment. Public safety organizations use a mix of NiCd, NiMH and Li-ion. Checking with a fire department to find out which chemistry works best, I learned that Li-ion is indeed superior. After 15 months of use, the Li-ion batteries tested on a Cadex Charger for Asus 70-NLV1B2000M analyzer still showed 92–95 percent capacity, and the users are confident that the batteries can be used reliably for two to three full shifts on a single charge. Such performance would not have been possible with nickel-based batteries. But battery breakdowns still occur and the failure rate continues to be relatively high in fleet use. This might be user-related, and the Dutch Army model of assigning a Charger for Asus 90-NLV1B1000T as a personal belonging might solve this problem.
The lighter weight and longer runtime of Li-ion also offers noticeable advantages for power tools. Stores say that Li-ion Charger for Asus 90-NLV1B2000T generate fewer returns than nickel-based packs, and this is in part due to the protection circuit that prevents reverse polarization on overload. Medical instruments are also switching to Li-ion but regulatory conditions make the change cumbersome. Bureaucracy can indeed stifle new technology rather than promote it. High failure rate and unreliable Charger for Asus 90-NQF1B1000T performance have prompted many organizations to check fleet batteries as part of quality control. This entails inspecting new batteries as well as maintaining packs deployed in the field. Conventional wisdom says a battery should always perform flawlessly when new. Yet many users know that a fresh supply of batteries does not always meet the specifications. Some purchasers check incoming batteries with a battery analyzer and return an entire lot if one in 10 does not meet the capacity requirements. Placing underperforming batteries into the field can jeopardize an entire system with unpredictable performance and frequent downtime.Battery for Fujitsu FPCBP67
A customer will occasionally call a maker of Battery for Fujitsu FPCBP67AP analyzers, such as Cadex, to complain that the unit is faulty and no longer indicates correct capacity readings when testing batteries. In most cases, the customer has just purchased a new batch of batteries, and when tested, their capacities were at an unacceptable low level of 70 percent instead of the specified 100 percent. The customer naturally assumes that it can’t be these new Battery for Fujitsu FPCBP77 and blames the analyzer. Battery analyzers also perform the important function of restoring faded batteries and weeding out deadwood. Weak batteries can hide among their good peers and everything seems fine. Yet, when the system is put to the test in an emergency situation, these non-performers can wreak havoc. Underperforming batteries are the cause of many operational failures. Organizations tend to postpone Battery for Fujitsu FPCBP77AP maintenance until a crisis situation develops. This happened to a fire department in the Vancouver area, and the two-way radios experienced chronic communication problems, especially during callouts lasting more than two hours. Although the radios seemed to function well in receive mode, the firefighters had trouble transmitting. They were often left in peril, unaware that their calls for help had not gone out.Battery for Fujitsu FPCBP97
Responding to the growing complaints from firefighters, the fire brigade acquired a Cadex battery analyzer to service all Battery for Fujitsu FPCBP97AP . Packs that failed to recover and deliver the required target capacity of 80 percent were replaced. The technician supervising the service was surprised to see how many fleet batteries were underperforming. Many had capacities of only 20 percent after a full charge, a level that is not sufficient for field use. Shortly after servicing the batteries, the firefighters were summoned to a large fire that lasted for 10 hours and demanded heavy radio traffic. To their astonishment, none of the radios failed, and the success of this flawless operation was accredited to the Battery for Fujitsu FPCBP82 performance. The captain of the fire brigade personally contacted the manufacturer of the battery analyzer and endorsed the device enthusiastically. On another occasion, a Cadex representative was allowed to visit the emergency management facility of a large US city where over 1,000 batteries sat in chargers. The green lights glowed, indicating that the batteries were ready at a moment’s notice. The officer in charge stood erect and said confidently, “We are ready for any emergency.”Battery for Fujitsu FPCBP82AP
At $120 per kWh, a deep-cycle battery for golf cars is most economical, followed by starter and forklift Battery for Fujitsu FPCBP82Z . Complex manufacturing, rare raw materials, electronic safety circuits and management systems make newer technologies more expensive than older systems. High-volume production will moderate the price only marginally. Batteries for powertrains are about $1,000 per kWh. The electric vehicle will tell how far the Battery for Fujitsu FPB0227 can go, and we hope for success. Advancing further and deploying batteries for heavy trains, large ships and passenger airplanes makes little sense today. Called the Lohner-Porsche carriage, the hybrid function served as an electrical transmission rather than power boost, which is the primary purpose of the current hybrids. With Mr. Porsche in the driver’s seat, the car broke several speed records in Austria, including a record set at the Exelberg Rally in 1901.Current Battery for Fujitsu FPCBP222 technologies are not yet suited to replace petroleum; the NCV of a battery is low, the price is high and the life span short. Finding a new energy source comparable to petroleum products will be difficult to find.Propulsion by an electric powertrain is not new — Ferdinand Porsche designed a hybrid vehicle in 1898.Battery for Fujitsu FPCBP222AP
Renewable energy sources such as wind and sun do not provide a steady stream of power, nor do they harmonize with user demand. Large energy storage batteries called load leveling or grid storage ASUS Eee PC T91 Battery is needed to provide a seamless service.Storing energy when the demand is low is not new. Hydroelectric power stations use excess electricity to pump water back up to the reservoir at night for use the next day. With an efficiency factor of 70–85 percent, pumped hydro is easier to manage than adjusting the generators to the exact power need. Flywheels also serve as energy storage. Asus u33jc Battery
Large electric motors spin up one-ton flywheels when excess energy is available to supply brief energy deficiencies. Flywheels are the most expensive energy storing media, followed by Li-ion. Pumping compressed air into underground cavities is another way to store energy, but load leveling batteries are the most practical for wind farms and solar installations.Asus AP21-T91
A wind turbine generates between 900kW and 4MW of power and a typical wind farm produces 30–300 megawatts (MW) in total. To get a better idea of electric mega-power, 1MW feeds 50 houses or a super Walmart store. A 30MW wind farm uses a storage Asus AP23-T91 battery of about 15MW. This is the equivalent of 20,000 starter batteries and costs about $10 million. Besides wattage, the battery industry also uses Volt-amps (VA) to specify battery capacity. Read more about Watts and Volt-amps. Most energy storage batteries are lead acid; newer systems lower than 1MW include sodium-sulfur and Li-ion. The Asus ASUS Eee PC T91 S101 Battery management system (BMS) keeps the battery at 50 percent charge to allow absorbing energy on wind gusts and delivering on high load demands. Modern BMS can switch from charge to discharge in less than a second. This helps stabilize the voltage on transmission lines.Concern about storage batteries within residences and industrial/institutional buildings when solar or wind energy conversion systems have been installed. Where can the batteries for a building be safely stored - protected from fire, water, gas release, etc. The use of small WECS or Solar Panels require Asus Eee PC T91 Tablet ASUS Eee PC T91MT Battery to level the power.
We need to determine the hazard of various storage locations.How is it possible that Sealed Lead-Acid manufacturers claim that Asus ASUS Eee PC T91SA Battery life expectancy is 5-10 years when used in Solar or Wind powered Systems and on the other hand they claim that Designated cycle life is around 500 cycles. (500 charging cycles + 500 discharging cycles). If we assume that Sealed Lead-Acid battery will be charged during day and discharged during night it come that 500/365 days will give me 1,36 years of life. When i take in consider that 500 cycles is at 20 degrees Celsius (which is almost never) it come to conclusion that Sealed Lead-Acid will run approximately 1 year… which is i must admit to low comparing to some older chemistries in use. Asus 70-OA1G1B1000
Acer TravelMate 6495TG Battery
Unfortunately the Acer TravelMate 5740Z-P602G25Mn Battery life was a lot less impressive. We ran HD video on loop and were disappointed when the Acer Aspire S3-951 died after just 149 minutes. This isn't a disastrous performance, but it is below average for a modern laptop - we usually get around three hours of movie action before the screen fades to black.Considering this is an ultrabook built for portability, the result is even more disappointing. The Asus Zenbook, for example, survived for over four hours with the same test. Acer TravelMate 5740Z-P604G32Mnss Battery , If you're looking for a new laptop, you'll have to seriously consider what's more important to you - performance or longevity.We've tested the first generation of ultrabooks, and so far we've liked what we've seen. This attractive blend of performance and portability might not be new (as Apple fanboys will be quick to point out), and we're not sure why it's taken Intel's intervention to stimulate manufacturers into producing mini laptops such as the Acer Aspire S3-951. However, for anyone who's a regular road hog, the ultrabook is an enticing prospect.Acer TravelMate 5742 Battery
The Acer Aspire S3-951's slender chassis may not be as stupefyingly thin or sleek as the Asus Zenbook,Acer TravelMate 5742-372G25Mn Battery , but it's still compact enough to fit in almost any bag. It's also impressively tough considering the girth, with a firm lid and tough body. We were impressed by the excellent Intel Core i7 processor performance, and saw next to no slowdown when running several applications at once. Multimedia software runs fine, and the ultrabook starts up and shuts down in no time at all. If you need a machine to bash out emails and documents on the move, the Acer Aspire S3-951's keyboard will do the job. Acer TravelMate 5742-373G32Mn Battery , It isn't too cramped, despite the compact frame, with the exception of the miniscule arrow keys.Unfortunately, for a laptop marketed on its portability, the Acer Aspire S3-951's battery life is pants. Just two and a half hours of movie playback on a single charge is below average, even for a bog-standard entry-level laptop. We also had massive issues with the touchpad. Those integrated mouse buttons are a massive pain, and we resorted to tapping the surface to select menu options instead. Anyone with a huge media collection will need to cart around an external hard drive, because only 200GB of storage space is available on the 240GB SSD.Acer TravelMate 5742-463G32Mn Battery
While the Acer Aspire S3-951 is a well-built and powerful ultrabook, Acer TravelMate 7740Z Battery , which offers good value for money, we were more drawn to the Toshiba Satellite Z830 and the Asus Zenbook. However, a cut-price Core i5 version of the Acer Aspire S3-951 can be had if your budget is tight, and nobody will be disappointed by the excellent performance of this Core i7 model.The Aspire 5740G-434G32Mn turns out to be a good entry into the world of multimedia laptops. The review sample came equipped with an Intel Core i5-430M processor along with four GB of RAM and a mobility Radeon HD 5470 HD by ATI.When you visit the Acer webpage, you'll find three configurations of the 5470G. Acer TravelMate 7740G-434G50Mnss Battery , The biggest difference is the size of the hard drive and the RAM. Our review deals with the Aspire 5740G-434G32Mn which is set up with a 320 GB hard drive and four GB of RAM. The 5740G-436G50Mn, the second possible configuration, comes with a 500 GB hard drive and six GB of RAM and adds Bluetooth 2.1 connectivity. Last but not least, there is the 5740G-436G50Mn which is part of Acer's 5470D 3D series. It sports what Acer calls a TriDef 3D screen. Acer TravelMate 7740G Battery , This means that the sceen was coated with a special 3D pixel coating. Acer claims that, using the required 3D prism glasses, effects akin a 3D digital cinema are possible.Acer TravelMate 7740-434G32Mnss Battery
The case of the Aspire 5740G is made from plastic, which is nothing out of the ordinary in this price segment. Acer TravelMate 5742-5562G50Mnss01 Battery , It feels very robust and stable, though. There is the occasional creak when stressed with a single finger, but no visible marks are left behind. The only exception, however, is the back of the lid, which is a weak point in more affordable laptops. This is also true for the Aspire 5740G.Lifting the base unit at one end is no problem for the case, either. In terms of finish the Acer laptop seems alright. Acer TravelMate 5742-7013 Battery , The construction elements of the case fit together nicely, leaving no big gaps between different parts. There are no sharp corners or edges.The 15.6 inch display is held in place by a simple locking mechanism which is situated in the middle of the front part. Moving the latch to the right releases the display, which can be opened easily.The design is typical of Acer's models: the Aspire 5740G sports predominantly blue colors. The review sample was dark blue and gray. Acer TravelMate 5742-7159 Battery , The lid is, except of the central Acer logo, dark blue with a high-gloss finish. The same is true for the screen bezel. Hence these areas are very prone to fingerprints and overall rather care intensive. The area around the keyboard and the palmrest are matte gray.The dark design of the Aspire 5740G is rather unobtrusive and conservative, thereby keeping it from sticking out too much in public.Acer TravelMate 5742-7399 Battery
The Aspire 5740G holds all current interfaces required for a modern multimedia laptop. Acer TravelMate 5742-7906 Battery , The connections are not distributed evenly on all four side, but are mainly concentrated mainly on the right and the left. Should all ports be used this might lead to disturbing cables especially left of the laptop.The left side holds the a/c connector, the LAN connector (Broadcom NetLink Gigabit Ethernet), the HDMI port, a standard VGA out, two USB 2.0 ports, a microphone and a SPD interface (S/PDIF). Acer TravelMate 5742-7908 Battery , If you do not network wirelessly, at least the A/C and the LAN port are in use. In case you want to enjoy an HD movie on your TV set, the HDMI port will be occupied too. Connecting to the computer to your sound system too, you'll finally end up in a complete mess. An external monitor is the only thing missing now.In comparison, the right side looks very clean, almost empty.Acer TravelMate 5742G Battery , Only two USB 2.0 ports, the optical drive, the modem port (LSI HDA Modem) and the Kensington lock found their way here.At the front, there is a 5-in-1 card reader (SD, MMC, MS, MS PRO, xD). The back of the 5740G is void of connection ports and holds only the six cell battery.Acer TravelMate 5742Z Battery
The display bezel houses the Crystal Eye webcam optimized for bad lighting conditions. Acer TravelMate 7740-353G25Mnss Battery , Acer calls this "low light" optimized. The accompanying Array microphone is placed in the middle right above the keyboard, more precisely: right above the F11 key. Accordingly, video chats pose no problem to our review sample.An Atheros AR5B93 wireless module is used for wireless connections. For those who wish to have Bluetooth 2.1, the only option would be to select an Aspire 5730G-436G50Mn instead. Acer TravelMate 7740-352G32Mn Battery , This model comes with six GB of RAM and a bigger hard drive.You can also opt for an Blu-Ray drive (4X Blu-ray Disc/DVD-Super Multi Double-Layer drive) instead of the 8X Super Multi Double-Layer drive.Acer has come up with something quite special for the keyboard and the mouse replacement. Except for the key labels, the keyboard is kept in a black finish. The rugged surface of the keyboard keeps fingerprints away. Acer TravelMate 7740 Battery , The layout feels right, too: every key is where it should be. In general the key size is alright, but, Fn and ESC key had to shrink, because of the available space. However, there is no impact on typing. The feedback is very direct and the keyboard is quiet, even when typing energetically.Acer TravelMate 7340 Battery
Aesthetically the keyboard pleasant, too. Between the keys, there is a gap of two milimeters. Acer TravelMate 5742Z-4693 Battery , This should make typing easier. However, dust gathers quickly there.A full sized number block is aboard. So, the touchpad is not centered, but has been moved a little to the left, directly in front of the space bar. You can switch the touchpad on and off by pressing the button next to it. Using an external mouse with the laptop, this feature is very handy.Acer has built a multi gesture touchpad into the 5740G similar to those used on modern smartphones like the iphone. Acer TravelMate 5742ZG Battery , This means the user can zoom into or out of pictures using only his thumb and index finger; a circular motion with two fingers rotates pictures. Scrolling through documents or web pages via gesture is possible, too. Leaving these gimmicks aside, the touchpad does a good job. The mouse buttons are imitated by a strip of plastic below the touch sensitive pad.Above the keyboard there is a button labelled "P". This button can be associated with whatever the user likes. Right below this are two dedicated volume buttons.Acer TravelMate 5744 Battery
To the left of the keyboard there is the power button, which is illuminated with blue light. Acer TravelMate 5744G Battery , Below this are three other buttons: the first two for controlling WiFi and Bluetooth (not built-in in the test sample), and the third launches the Acer Backup Manager.The Acer spire 5470G comes with an Acer Cinecrystal TFT LC Screen with LED backlight. The maximum resolution, which Acer claims has a response time of eight milliseconds, of the 16:9 panel is 1366x768 pixels. Acer TravelMate 5744Z Battery , The response time means the laptop is well capable of displaying faster games, given, of course, the integrated Mobility Radeon Hd 5470 supplies the frame rates per second necessary. But more about that later.Not only the hardware used has an influence on the quality of what you see on the screen, the display plays its part, too. Thanks to the glossy screen colors look rich and shiny, when playing games or watching DVDs.Acer TravelMate 5760 Battery , Two hinges hold the 15.6 inch display in place. These offer enough stability, yet they are not perfectly tight: they allow luffing. Opening and closing the lid is easy and causes no unpleasant sounds. The lock which secures the display in closed position can be opened easily, too.Acer TravelMate 5760G Battery
Compared to similar laptops the brightness turns out to be lower mid-range. Acer TravelMate 6595TG Battery , The highest measured brightness was 187 cd/m² in the top left corner, and the lowest was 170 cd/m² in the top right. Looking at the measurments for the other parts of the screen, this means that the screen's illumination level is balanced at 91 %.Given the highly reflective CineCrytstal Display and the rather poor average brightness level outdoor use can be quite frustrating with the 5740G, at least during the day. Acer TravelMate 6595T Battery , As is true of all glossy display, reflections are a common. Even at maximum brightness in the shade, this is very annoying and stressful for the eyes.The Vertical viewing angles are not among the best, too. If you open the lid a little further than usual, dark spots will appear. Horizontal viewing angles, however, have a little more leeway. Even at bad angles, the content of the screen was well recognisable. Our sample came equipped with a Core i5 430M processor (3MB shared L3 Cache, 2.26 GHz). Acer TravelMate 6595G Battery , The integrated Turbo Boost Feature can automatically overlock the cores under load up to 2,53 Ghz while at the same time deactivating the cores that are not needed. The graphics adapter is a Mobility Radeon HD 5470 von ATI with 512 MB of GDDR3 RAM. The GPU is the successor of the Mobility Radeon HD 4570 with a higher clock speed and added DirectX 11 support.Acer TravelMate 6595 Battery
The entry-level to mid-range graphics adapter is capable of handling recent games.Acer TravelMate 6495 Battery , Sometimes settings have to be adjusted for the games to run smoothly. But before we get to the gaming part, let us first look at benchmarks allowing a preliminary evaluation of the gpu's performance.The somewhat outdated Futuremark benchmarks 3DMark2001, 3DMark03 and 3DMark05 were employed again and yielded 23077, 10045 and 6892 points respectively for the Aspire 5740G. Acer TravelMate 6495G Battery , In comparison the 5470's predecessor reached 16656, 9408 and 6755 points.What is more interesting are the 3DMark06 and the 3DMark Vantage benchmarks. The 3DMark06 benchmark was done using a resolution of 1280x1024. The Acer achieved 3761 points, of which 2611 are accounted for by the gpu.3DMark Vantage yielded a total of 1195 points. For comparison: the Mobility Radeon HD 4570 reached 3475 points in the 3DMark06 benchmark and 1082 in the 3DMark Vantage benchmark.Due to compatibility problems with Windows 7 we were unable to perform the popular PCMar05. Acer TravelMate 6495T Battery , This means we will have to do with the PCMark Vantage benchmark. The test sample reached a total score of 5537 points.Another part of the test setup is the well-tried Cinebench R10. Single-Core rendering produced 3412 points. Multi-Core rendering, however, brought a respectable 7847 points. Cinebench R10 awarded 4319 points for the shading capabilities.Acer TravelMate 6495TG Battery
Specific energy demonstrates how much energy a IBM ThinkPad X60 charger can hold in weight, which reflects the driving range. It is sobering to realize that in terms of output per weight, a battery generates only one percent the energy of fossil fuel. One kilogram (1.4 liter, 0.37 gallons) of gasoline produces roughly 12kWh, whereas a 1kg battery delivers about 120 Wh. We must keep in mind that the electric motor is better than 90 percent efficient while the IC engine comes in at only about 30 percent. In spite of this difference, the energy storage capability of a IBM ThinkPad X60s charger will need to double and quadruple before it can compete head-to-head with the IC engine.Specific power demonstrates acceleration, and most EV batteries respond well. An electric motor with the same horsepower has a better torque ratio than an IC engine.Cost presents a major drawback. There is no assurance that the battery’s target price of $250–400 per kWh, which BCG predicts, can be met. The mandated protection circuits for safety, Lenovo ThinkPad X61 charger managements for status, climate control for longevity and the 8–10-year warranty add to this challenge. The price of the battery alone amounts to the value of a vehicle with IC engine, essentially doubling the price of the EV.
The demand for Li-ion Lenovo ThinkPad X61s charger is increasing, and finding sufficient supply of lithium as a raw material is testing the mining industry. A compact EV battery (Nissan Leaf) uses about 4kg (9 lb) of lithium. If every man, woman and teenager were to drive an electric car in the future, a lithium shortage could develop and rumor of this happening is already spreading. About 70 percent of the world’s lithium comes from brine (salt lakes); the remainder is derived from hard rock. Research institutes are developing technology to draw lithium from seawater. China is the largest consumer of lithium. The Chinese believe that future cars will run on Li-ion IBM ThinkPad X41 Tablet charger and an unbridled supply of lithium is important to them. In 2009, total demand for lithium reached almost 92,000 metric tons, of which batteries consume 26 percent. Figure 1 illustrates typical uses of lithium, which include lubricants, glass, ceramics, pharmaceuticals and refrigeration.Batteries consume the largest share of lithium, and with the advent of the electric vehicle the demand could skyrocket. For now, the world has enough proven lithium reserves.IBM ThinkPad Z60t charger
The dry solid polymer battery uses heat to promote ion flow in what is called a “true plastic HITACHI Aquarius Charger .” The battery requires a core temperature of 60 to 100°C (140 to 212°F) to become conductive. The dry solid polymer has found a niche market for stationary power applications in warm climates where heat serves as a catalyst rather than a disadvantage. Built-in heating elements keep the battery operational at all times. High battery cost and safety concerns have limited the application of this technology. The more common Li-polymer uses moist electrolyte to enhance conductivity, as discussed earlier. Read more about the Lithium-polymer HITACHI Athena Charger . Batteries achieve optimum service life if used at 20°C (68°F) or slightly below, and nickel-based chemistries degrade rapidly when cycled at high ambient temperatures. the cycle life is reduced by 20 percent. At 40°C (104°F), the loss jumps to a whopping 40 percent, and if charged and discharged at 45°C (113°F), the cycle life is only half of what can be expected if used at 20°C (68°F).If, for example, a HITACHI Visionbook 133 Charger operates at 30°C (86°F) instead of a more moderate room temperature.
The latest lead-acid batteries that are part HITACHI VisionBook Plus 4000 Charger , part super-capacitor are suitable for intermittent very high charge / discharge duty. They cost 10% of the price of lithium. So the way to go is surely to have an IC engine that is run at a fixed speed, to charge the battery, when needed? Have a battery and electric motor(s) as high efficiency, infinitely variable speed transmission? The vehicle becomes an electric with a thousand mile range. Get in, simply drive on battery. When the battery drops to 20% state-of-charge, the IC engine kicks in, tops the HITACHI VisionBook Plus 4100 Charger to 80% and stops. These are ballpark figures. The driver can modify to suit requirements. Peak horsepower delivered by electric motors, therefore IC engine needs to be rated at only 50%. Quite a few shorter trips become pure electric. To plug in or not becomes optional. To use liquid fuel or not becomes optional.Great articles, thank you CADEX, I like to study the periodic table, I read about one element every night, from the information that I read, there are alot of mines that have already closed ( cost vs. what actually is left to be had in the mine) and the mines that are still running may run out in five to 30 years, some predict there’s just not enough of the certain metals needed for HITACHI VisionBook Plus 4140 Charger to do a large changeover to electric cars.
The price of an advanced, pure electric, high performance HITACHI VisionBook Plus 4300 Charger : $15,000. Clever marketing people have long worked out that in order to get cars out of the showrooms, they can explain that the battery can be leased, thus averaging out the cost of the battery over X number of years.Of course new discoveries happen all over the world so this could change, fossil fuels nobody is really telling the truth of whats left underground, it’s to their advantage for controling what ever thier motives are for the day. The earth, and I can’t tell you where I read this but, fossil fuel maybe somthing the earth makes all the time and it’s not going to run dry! anyways my point is, there maybe a limit to the metals available for producing huge quantites of all types of HITACHI VisionBook Plus 4350 Charger in the future, recycling is a must! P.S. did you know there’s a way to use magnesium as a fuel? and after it’s used it turns into magnesium oxide, which can be turned back into magnesium with a solar pumped laser! we have many roads for energy to travel, lets do what we can with batteries and IC engines, and countinue to look at new sources of energy.Pure HITACHI VisionBook Plus 4150 Charger suffers from an inherent problem that cannot be engineered away. Let’s for argument’s sake make an educated guess.
The second hand car trade knows from very long experience how people, who trade in their cars, go about disguising problems. When the pure battery electrics start coming in, it will automatically be assumed the Battery for LENOVO ASM 42T4786 is about to collapse. The trade-in offer will be small change only because a new $15,000 battery will have to be fitted. This is a battery seller’s dream come true. Leases will now cost much more. Discounts will have dried up. Subsidies will have vanished. It is difficult to see how this commercial problem can be overcome.Battery manufacturers are tooling up for the electric vehicle, but what would happen if it failed? Could there be a déjà vu of the fuel cell in the 1990s, or the bio fuels in the last decade that cannot survive without heavy government subsidies? The US Department of Energy (DOE) has admitted that some critical parameters of Li-ion are not met. Newer NiMH Battery for LENOVO ASM 42T4788 , which are cheaper and safer than Li-ion, are also suitable for the electric powertrain but these mature systems are often excluded from government grants for research.
There are no ideal contenders for the electric powertrain, and lithium-ion remains a good choice. Out of the five candidates illustrated in Figure 1, Li-nickel-manganese-cobalt (NMC), Li-phosphate and Li-manganese stand out as being superior. The popular Li-cobalt (not listed) used in consumer products was thought to be not robust enough; nevertheless, this high energy dense “computer Battery for LENOVO FRU 42T4781 ” powers the Tesla Roadster and Smart Fortwo ED.compromises are in safety, specific energy, cost and temperature performance. Note: The further the shapes extend outwards on the axis, the better the battery will be. With special permission from the Boston Consulting Group (BCG), ©2010. The illustration compares batteries in terms of safety; specific energy, also known as capacity; specific power, or the ability to deliver high current on demand; performance, the ability to function at hot and cold temperatures; life span, which includes the number of cycles delivered as well as calendar life; and finally cost. The figure does not mention charge times.Battery for LENOVO FRU 42T4783 offered for EV powertrains can be charged reasonably fast if a suitable electrical power outlet is available. A charge time of a few hours is acceptable for most users, and super-fast charging is the exception.
Nor does the table reveal self-discharge, another Battery for LENOVO FRU 42T4785 characteristic that needs scrutiny. In general, Li-ion batteries have low self-discharge, and this parameter can mostly be ignored when the battery is new. However, aging when exposed to heat pockets can increase the self-discharge of the affected cells and cause management problems. Among the EV battery candidates, Li-phosphate exhibits a higher self-discharge than the other systems.None of the five Battery for LENOVO FRU 42T4787 candidates in the figure above show a significant advantage over others, and the size of the spider fields are similar in volume, although different in shape. Focusing on one strong attribute inevitably discounts another. NCA, for example, has a high capacity but presents a safety challenge, whereas Li-phosphate is a safer system but has lower capacity. In the absence of a clear winner, car manufacturers include peripherals to compensate for the deficiencies. Battery manufacturers in turn assist by custom-designing the cell to strengthen the important characteristics needed for the application. Here is a brief summary of the most important characteristics of a Battery for LENOVO FRU 42T4789 for the electric powertrain.
Safety is one of the most important aspects when choosing a Battery for LENOVO 0A36281 for the EV. A single incident blown out of proportion by the media could turn the public against such a vehicle. Similar concerns occurred 100 years ago when steam engines exploded and gasoline tanks caught fire. The main concern is a thermal runaway of the battery. Carefully designed safety circuits with robust enclosures should virtually eliminate this, but the possibility of a serious accident exists. A Battery for LENOVO 121001091 must also be safe when exposed to misuse and advancing age.Life Span reflects cycle count and longevity. Most EV batteries are guaranteed for 8–10 years or 160km (100 miles). Capacity loss through aging is a challenge, especially in hot climates. Auto manufacturers lack information as to how batteries age under different user conditions and climates. To compensate for capacity loss, EV manufacturers increase the size of the batteries to allow for some degradation within the guaranteed service life.Performance reflects the condition of theBattery for LENOVO 121001094 121001096 when driving the EV in blistering summer heat and freezing temperatures. Unlike an IC engine that works over a large temperature range, batteries are sensitive to cold and heat and require some climate control. In vehicles powered solely by a battery, the energy to moderate the battery temperature, as well as heat and cool the cabin, comes from the battery.
satellite l675d-s7012 battery
Intrinsically safe (IS) satellite pro l670-15t battery contain protection circuits that prevent the formation of high currents, which could lead to excess heat, sparks and explosion. Authorities mandate IS batteries for two-way radios, gas detectors and other electronic instruments operating in hazardous areas such as oil refineries, chemical plants and grain elevators. There are several levels of intrinsic safety, each serving a specific hazard level, and the requirements vary from country to country. The provisions are in addition to the protection circuit for lithium-ion, and the approval standards are rigorous. This results in a high price for the VGP-BPS13/S Laptop Battery .Battery packs for laptops and other portable devices contain many levels of protection to assure safety under (almost) all circumstances when in the hands of the public. The safety begins with the battery cell, which includes:  a built-in temperature switch called PTC that protects against high current surges,  a circuit interrupt device (CID) that opens the electrical path if an over-charge raises the internal cell pressure to 1000 kPa (145psi), and a safety vent that releases gas in the event of a rapid increase in cell pressure. In addition to these internal safeguards, an external electronic protection circuit prevents the charge voltage of any cell from exceeding 4.30V. Furthermore, a fuse cuts the current if the skin temperature of any cell approaches 90°C (194°F). To prevent the VGP-BPS13A/B Laptop Battery from over-discharging, a control circuit cuts off the current path at about 2.20V/cell.
Each cell in a string needs independent voltage monitoring. The higher the cell count, the more complex the protection circuit becomes. Four cells in series had been the practical limit for consumer applications. Today, new chips accommodate 5–7, 7–10 and 13 cells in series. For specialty applications, such as the hybrid or electric vehicle delivering several hundred volts, specialty protection circuits are made, which sharply increases the overall cost of the VGP-BPS13A/Q Laptop Battery . Monitoring two or more cells in parallel to get higher current is less critical than controlling voltages in a string configuration. Protection circuits can only shield abuse from the outside, such as an electrical short or faulty charger. If, however, a defect occurs within the cell, such as contamination caused by microscopic metal particles, the external protection circuit has little effect and cannot arrest the reaction. Reinforced and self-healing separators are being developed for cells used in electric powertrains, but this makes the batteries large and expensive. While a Li-ion for a laptop provides a capacity of 170–200Wh/kg, the EV Li-ion has only 100–110Wh/kg.VGP-BPS13A/S Laptop Battery
The gas released by venting of a Li-ion cell as part of pressure buildup is mainly carbon dioxide (CO2). Other gases that form through abusive heating are vaporized electrolyte consisting of ethylene and/or propylene. Burning gases include combustion products of the organic solvents. Li-ion commonly discharges to 3.0V/cell. This is the threshold at which most portable equipment stops working. The lowest “low-voltage” power cut-off is 2.5V/cell, and during prolonged storage, the self-discharge causes the voltage to drop further. This causes the protection circuit to turn off and the VGP-BPS13AS Laptop Battery goes to sleep as if dead. Most chargers ignore Li-ion packs that have gone to sleep and a charge is no longer possible. While in the ON position, the internal protection circuit has a resistance of 50 to 100mOhm. The circuit typically consists of two switches connected in series; one is responsible for the high cut-off, and the other for the low cut-off. The protection circuit of some smaller cellular VGP-BPS13B/S Laptop Battery can be relaxed, and some get away with only the cell’s intrinsic protection and/or an external fuse. The absence of a full protection circuit saves money, but a new problem arises. Here is what can happen.
Some low-cost chargers rely solely on the VGP-BPS13B/Q Laptop Battery ’s protection circuit to terminate charge current. Without a functioning voltage termination switch in the battery, the cell voltage can rise too high and overcharge the battery. Heat buildup and bulging are early indications of pending failures before potential disintegration occurs. Figure 1 shows a battery that has fragmented while charging in a car. Generic cell phone disintegrated while charging in the back of a car.Combination of unsafe battery and charger can have a lethal effect. Manufacturers advise only to use approved VGP-BPS13B/B Laptop Battery and chargers. A concern also arises if static electricity or a faulty charger has destroyed the battery’s protection circuit. This can fuse the solid-state switches into a permanent ON position without the user’s knowledge. A battery with a faulty protection circuit may function normally but fail to provide the required safety. Low price makes generic replacement batteries from Asia popular with cell phone users. While the quality and performance of these batteries is improving, some do not provide the same high safety as the original branded version. A wise shopper spends a little more and replaces the vgp-bps2a Laptop Battery with an approved model.
I receive many questions on www.BatteryUniversity.com from visitors wanting to know why the aftermarket does not provide low-cost laptop batteries as readily as cellular batteries. This is mainly due to safety. While a 1,400mAh cellular vgp-bps2b Laptop Battery stores only 4Wh of energy, a laptop battery holds about 60Wh, 15 times more. Many manufacturers of consumer batteries protect the batteries with a security inscription that very few can break. Although aftermarket batteries are available, many do not offer all the functions of the branded version. Typical problems are fuel-gauge errors and not being able to charge correctly. Manufacturers of lithium-ion batteries do not mention the word “explosion” and refer to “venting with flame” or “rapid disassembly.” Although seen as a slower and more controlled process than explosion, venting with flame, or rapid disassembly, can nevertheless be violent and inflict injury to those in close proximity. The court hears many legal cases involving laptops and other batteries that are said to have caused property damage, fire and personal injury. This is also a large concern in the aviation industry. Most of the batteries for consumer products are shipped by air just in time for improved inventory control.vgp-bps2c Laptop Battery
Remove fully discharged batteries from the charger. A consumer charger may not apply the optimal trickle charge and the cell could be stressed with overcharge.A satellite l675 battery is an electrochemical device that produces a voltage potential when placing different metals in acid solutions. The open circuit voltage (OCV) attained varies according to the metals and acid solutions (electrolyte) used. Applying a charge or discharge places the battery in the closed circuit voltage (CCV) condition; charging raises the voltage and discharging lowers it. This voltage behavior is governed by the internal battery resistance; a low resistance produces less fluctuation under load or charge than a high one. satellite l675d-s7012 battery
Charging and discharging agitates the satellite m645 battery and a full stabilization takes up to 24 hours. Temperature also has a role; cold rises the voltage and heat lowers it. Manufacturers rate a battery by assigning a nominal voltage and with a few exceptions, these voltages follow an agreed convention. Rating some Li-ion higher than the standard 3.6V/cell may help in product marketing but for the user, a chemistry-specific voltage counts. Here are the nominal voltages of the most common batteries in brief. satellite m645-s4049 battery
The nominal voltage of lead acid is 2.00 volts per cell, however when measuring the open circuit voltage (OCV), the voltage of a fully charged satellite m645-s4055 battery should be 2.10V/cell. Keeping lead acid below 2.10V/cell will cause the buildup of sulfation.In consumer applications, NiCd and NiMH are rated at 1.2V/cell, industrial, aviation and military batteries adhere to the original 1.25V. There is no difference between the 1.2V and 1.25V cell; the marking is simply preference.The nominal voltage of lithium-ion had been 3.60V/cell. This is a practical figure because it represents three nickel-based satellite pro c650-198 batteryconnected in series (3 x 1.2V = 3.6V). Some cell manufacturers mark their Li-ion products as 3.70V/cell or higher. This poses a marketing advantage because of higher watt-hours on paper (multiplying voltage times current equals W). It also creates unfamiliar references of 11.1V and 14.8V when connecting three and four cells in series. Let this higher voltage not cause confusion; equipment manufacturers will always adhere to the nominal cell voltage of 3.60V for most Li-ion systems, and the standard designation of 10.8V and 14.4V will always work.satellite pro l630 battery
How did this higher voltage creep in? To calculate the nominal voltage, we take a fully charged battery that measures 4.20V and then fully discharge it to 3.00V at a rate of 0.5C while plotting the average voltage. For Li-cobalt, the average voltage comes to 3.6V/cell. Performing the same discharge on a fully charged Li-manganese with a lower internal resistance will result in a higher average voltage. Pure spinel has one of the lowest internal resistances, and the plotted voltage on a load moves up to between 3.70 and 3.80V/cell. This higher midpoint voltage does not change the full-charge and end-of-discharge voltage threshold. The phosphate-based lithium-ion deviates from others in the Li-ion family and the nominal cell voltages are specified at between 3.20 and 3.30V. Because of the voltage difference, the two lithium-ion families are not interchangeable. New lithium-based batteries will have other voltages and specialty chargers may be needed.satellite pro l640 battery
The alkaline delivers 1.5V, silver-oxide 1.6V and primary lithium 3V. The 9-volt battery has six cells in series. Do not charge primary satellite pro l630-143 battery because overcharge can produce explosive gases. Batteries can release high power, and most packs include protection to safeguard against malfunction. The most basic safety device in a battery is a fuse that opens on high current. Some devices open permanently and render the battery useless; others are more forgiving and reset. The Polyswitch™ is such a re-settable device. It creates a high resistance on excess current and reverts back to the low ON position when the condition normalizes. A third method is a solid-state switch that measures the current and disconnects on excessive load conditions. All switching devices have a residual resistance during normal operation, which causes a slight increase in overall satellite pro l650-15p battery resistance and a subsequent voltage drop.
Acer BT.A2501.001 battery replacement
Figure 2 illustrates a Acer Aspire 4738Z battery replacement pack in which “cell 3” produces only 0.6V instead of the full 1.2V. With depressed operating voltage, this battery reaches the end-of-discharge point sooner than a normal pack and the runtime will be severely shortened. The remaining three cells are unable to deliver their stored energy when the equipment cuts off due to low voltage. The cause of cell failure can be a partial short cell that consumes its own charge from within through elevated self-discharge, or a dry-out in which the cell has lost electrolyte by a leak or through inappropriate usage.If higher currents are needed and larger cells with increased ampere-hour (Ah) ratings are not available or the design has constraints, one or more cells are connected in parallel. Most chemistries allow parallel configurations with little side effect. Figure 3 illustrates four cells connected in parallel. The voltage of the illustrated pack remains at 1.2V, but the current handling and runtime are increased fourfold.Acer Aspire 4738ZG battery replacement
A high-resistance cell, or one that is open, is less critical in a parallel circuit than in serial configuration, however, a weak cell reduces the total load capability. It’s like an engine that fires on only three cylinders instead of all four. An electrical short, on the other hand, could be devastating because the faulty cell would drain energy from the other cells, causing a fire hazard. Most so-called shorts are of mild nature and manifest themselves in elevated self-discharge. Figure 4 illustrates a parallel configuration with one faulty cell. A weak cell will not affect the voltage but will provide a low runtime due to reduced current handling.Acer Aspire 4739 battery replacement
A shorted cell could cause excessive heat and become a fire hazard.The serial/parallel configuration shown in Figure 5 allows superior design flexibility and achieves the wanted voltage and
current ratings with a standard cell size. The total power is the product of voltage times current, and the four 1.2V/1000mAh cells produce 4.8Wh. Serial/parallel connections are common with
lithium-ion, especially for laptop batteries, and the built-in protection circuit must monitor each cell individually. Integrated circuits (ICs) designed for various cell combinations simplify
the pack design.Keep the battery contacts clean. A four-cell configuration has eight contacts (cell to holder and holder to next cell); each contact adds resistance.Acer Aspire 4741 battery replacement
Never mix batteries; replace all cells when weak. The overall performance is only as good as the weakest link in the chain. Observe polarity. A reversed cell subtracts rather than adds to the cell voltage. Remove Acer Aspire 4741G battery replacement from the equipment when no longer in use to prevent leakage and corrosion. While spent alkaline normally do not leak, spent carbon-zinc discharge corrosive acid that can destroy the device. Don’t store loose cells in a metal box. Place individual cells in small plastic bags to prevent an electrical short. Don’t carry loose cells in your pockets. Keep batteries away from small children. If swallowed, the current flow of the battery can ulcerate the stomach wall.The battery can also rupture and cause poisoning. Do not recharge non-rechargeable Acer Aspire 4741G-332G32Mnsk battery replacement ; hydrogen buildup can lead to an explosion. Perform experimental charging only under supervision.Observe polarity when charging a secondary cell. Reversed polarity can cause an electrical short that can lead to heat and fire if left unattended.
Smaller devices required a more compact cell design, and in the 1980s the button cell met this need. The desired voltage was achieved by stacking the cells into a tube. Early cordless telephones, medical devices and security wands at airports used these batteries. Although small and inexpensive to build, the stacked button cell fell out of favor, and newer designs reverted to more conventional Acer BTP-AS1681 battery replacementconfigurations. A drawback of the button cell is swelling if charged too rapidly. Button cells have no safety vent and can only be charged at a 10- to 16-hour charge. However, newer designs claim rapid charge capability. Most button cells in use today are non-rechargeable and can be found in medical implants, watches, hearing aids, car keys and memory backup. Figure 3 illustrates the button cells with accompanying cross section.Acer LC.BTP03.003 battery replacement
Button cells, also known as coin cells, offer small size and ease of stacking but do not allow fast charging. Most commercial button cells are non-rechargeable.Introduced in the early 1990s, the prismatic cell satisfies the demand for thinner sizes and lower manufacturing costs. Wrapped in elegant packages resembling a box of chewing gum or a small chocolate bar, prismatic cells make optimal use of space by using the layered approach. These cells are predominantly found in mobile phones with lithium-ion. No universal format exists and each manufacturer designs its own. Acer BATCL32 battery replacement
If the housing design allows a few millimeters extra in a cell phone or laptop, the manufacturer designs a new pack for the sake of higher capacity. High volume justifies this move. Prismatic cells are also making critical inroads into larger formats. Packaged inwelded aluminum housings, the cells deliver capacities of 20 to 30Ah and are primarily used for electric powertrains in hybrid and electric vehicles. Figure 4shows the prismatic cell.Acer BATCL32L battery replacement
The prismatic cell improves space utilization and allows flexible design but it can be more expensive to manufacture, less efficient in thermal management and have a shorter cycle life than the cylindrical design. The prismatic cell requires a slightly thicker wall size to compensate for the decreased mechanical stability from the cylindrical design, resulting in a small capacity drop. Optimizing use of space makes up this loss. Prismatic cells for portable devices range from 400mAh to 2,000mAh.In 1995, the pouch cell surprised the battery world with a radical new design. Rather than using a metallic cylinder and glass-to-metal electrical feed-through for insulation, conductive foil tabs welded to the electrode and sealed to the pouch carry the positive and negative terminals to the outside. Figure 5 illustrates such a pouch cell.Acer BT.A1401.001 battery replacement
The pouch cell offers a simple, flexible and lightweight solution to Acer BT.A1401.002 battery replacement design. Exposure to high humidity and hot temperature can shorten service life. The pouch cell makes the most efficient use of space and achieves a 90 to 95 percent packaging efficiency, the highest among battery packs. Eliminating the metal enclosure reduces weight but the cell needs some alternative support in the battery compartment. The pouch pack finds applications in consumer, military, as well as automotive applications. No standardized pouch cells exist; each manufacturer builds the cells for a specific application. Pouch packs are commonly Li-polymer. Its specific energy is often lower and the cell is less durable than Li-ion in the cylindrical package. Swelling or bulging as a result of gas generation during charge and discharge is a concern. Acer BT.A1405.001 battery replacement manufacturers insist that these batteries do not generate excess gases that can lead to swelling. Nevertheless, excess swelling can occur and most is due to faulty manufacturing, and not misuse. Some dealers have failures due to swelling of as much as three percent on certain batches. The pressure from swelling can crack a battery cover, and in some cases break the display and electronic circuit board. Manufacturers say that an inflated cell is safe. While this may be true, do not puncture a swollen cell in close proximity to heat or fire; the escaping gases can ignite. Figure 6 shows a swelled pouch cell.Acer BT.A2401.001 battery replacement
Swelling can occur as part of gas generation. Battery manufacturers are at odds why this happens. A 5mm (0.2”) Acer BT.A2401.002 battery replacement in a hard shell can grow to 8mm (0.3”), more in a foil package. To prevent swelling, the manufacturer adds excess film to create a “gas bag” outside the cell. During the first charge, gases escape into the gasbag, which is then cut off and the pack resealed as part of the finishing process. Expect some swelling on subsequent charges; 8 to 10 percent over 500 cycles is normal. Provision must be made in the battery compartment to allow for expansion. It is best not to stack pouch cells but to lay them flat side by side. Prevent sharp edges that could stress the pouch cell as they expand.Acer BT.A2501.001 battery replacement packs achieve the desired operating voltage by connecting several cells in series, with each cell adding to the total terminal voltage. Parallel connection attains higher capacity for increased current handling, as each cell adds to the total current handling. Some packs may have a combination of serial and parallel connections. Laptop batteries commonly have four 3.6V Li-ion cells in series to achieve 14.4V and two in parallel to boost the capacity from 2,400mAh to 4,800mAh. Such a configuration is called 4S2P, meaning 4 cells are in series and 2 in parallel. Insulating foil between the cells prevents the conductive metallic skin from causing an electrical short. The foil also shields against heat transfer should one cell get hot.Acer BT.A2501.002 battery replacement
Most battery chemistries allow serial and parallel configuration. It is important to use the same Acer Aspire 4552 battery replacement type with equal capacity throughout and never mix different makes and sizes. A weaker cell causes an imbalance. This is especially critical in a serial configuration and a battery is only as strong as the weakest link. Imagine a chain with strong and weak links. This chain can pull a small weight but when the tension rises, the weakest link will break. The same happens when connecting cells with different capacities in a Acer Aspire 4552-5078 battery replacement . The weak cells may not quit immediately but get exhausted more quickly than the strong ones when in continued use. On charge, the low cells fill up before the strong ones and get hot; on discharge the weak are empty before the strong ones and they are getting stressed.The single-cell design is the simplest battery pack. A typical example of this configuration is the cellular phone battery with a 3.6V lithium-ion cell. Other uses of a single cell are wall clocks, which typically use a 1.5V alkaline cell, as well as wristwatches and memory backup.Acer Aspire 4552G battery replacement
The nominal cell voltage of nickel is 1.2V. There is no difference between the 1.2V and 1.25V cell; the marking is simply preference. Whereas consumer batteries use 1.2V/cell as the nominal rating, industrial, aviation and military Acer Aspire 4560 battery replacement adhere to the original 1.25V. The alkaline delivers 1.5V, silver-oxide 1.6V, lead acid 2V, primary lithium 3V, Li-phosphate 3.3V and regular lithium-ion 3.6V. Li-manganese and other lithium-based systems sometimes use 3.7V. This has nothing to do with electrochemistry and these batteries can serve as 3.6V cells. Manufacturers like to use a higher voltage because low internal resistance causes less of a voltage drop with a load.Portable equipment needing higher voltages use Acer Aspire 4560G battery replacement packs with two or more cells connected in series. Figure 3-8 shows a battery pack with four 1.2V nickel-based cells in series to produce 4.8V. In comparison, a four-cell lead acid string with 2V/cell will generate 8V, and four Li-ion with 3.6V/cell will give 14.40V. If you need an odd voltage of, say, 9.5 volts, you can connect five lead acid, eight NiMH/NiCd), or three Li-ion in series. The end battery voltage does not need to be exact as long as it is higher than what the device specifies. A 12V supply should work; most battery-operated devices can tolerate some over-voltage.Acer Aspire 4625 battery replacement
A higher voltage has the advantage of keeping the conductor size small. Medium-priced cordless power tools run on 12V and 18V batteries; high-end power tools use 24V and 36V. The car industry talked about increasing the starter Acer Aspire 4733Z battery replacement from 12V (14V) to 36V, better known as 42V, by placing 18 lead acid cells in series. Logistics of changing the electrical components and arcing problems on mechanical switches derailed the move. Early hybrid cars run on 148V batteries; newer models have batteries with 450–500V. Such a high-voltage battery requires 400 nickel-based cells in series. Li-ion cuts the cell count by three. High-voltage batteries require careful cell matching, especially when drawing heavy loads or when operating in cold temperatures. Acer Aspire 4738 battery replacement
With so many cells in series, the possibility of one failing is real. One open cell would break the circuit and a shorted one would lower the overall voltage. Cell matching has always been a challenge when replacing a faulty cell in an aging pack. A new cell has a higher capacity than the others, causing an imbalance. Welded construction adds to the complexity of repair and for these reasons, Acer Aspire 4738G battery replacement packs are commonly replaced as a unit when one cell fails. High-voltage hybrid batteries, in which a full replacement would be prohibitive, divide the pack into blocks, each consisting of a specific number of cells. If one cell fails, the affected block is replaced.
Studio 1745 Laptop Battery Replacement
The M14x's webcam captured bright, clear, and detailed images. Studio XPS 1645 Battery , When we chatted with a colleague over Skype, she could even notice the red in a poster behind us. The M14x comes with FastAccess, which not only can use your face to log into the system, but also automatically enters passwords for websites. Setup took just a second while the utility scanned our face; after that, it took a split second for the notebook to recognize our mug and log us into Windows. With a 2.3-GHz Intel Core i7-2820QM quad-core processor, Studio XPS 1647 Battery , 8GB of RAM, and an Nvidia Geforce GT 555M processor (with 1.5GB of VRAM), the M14x has a lot under the hood. With a PCMark Vantage score of 9,293, this laptop is one of the most powerful systems of its size. That score is about 4,000 points higher than the average mainstream system, and it even beats larger dedicated gaming rigs such as the MSI GT680R (9,184). It also bested the Dell XPS 17, which has the same internal compenents, by about 1,000 points.The 750GB, 7,200-rpm hard drive duplicated a 4.97GB folder of multimedia in 2 minutes and 6 seconds, a rate of 40.4 MBps. That's about 14 MBps faster than the category average. Studio XPS M1640 Battery
It took the M14x just 36 seconds to convert a 114MB MPEG4 to AVI using Oxelon Media Encoder; Studio 1535 Battery , that's well under the 2:18 average for mainstream systems and on a par with the Dell XPS 17. While Nvidia's GT class of graphics chips is intended more for entertainment systems than dedicated gaming rigs, the Geforce GT555M GPU in the M14x is the top model in the series, and it acquitted itself well. On 3DMark06, the notebook scored 12,553, about 4,000 points higher than the xm15, ASUS G53Jw, Studio 1749 Battery , and the Dell XPS 15. However, it was trumped by the MSI GT680R, which came in with a score of 13,987.On 3DMark11, the M14x scored 1,384, which is about 400 points higher than the mainstream average. That's also higher than just about every other notebook we've tested, save the GT680R (1,796) and the ASUS G73SW (1,816). It just beat out the 15-inch MacBook Pro, whose AMD Radeon HD 6750M and 1GB of DDR5 memory notched 1,345.Studio 1747 Battery
On Far Cry 2, the M14x averaged 50 frames per second at native resolution and graphics set to Very High. Latitude D400 Battery , That showing is well above the category average (16 fps) and compares favorably to the xm15 (28 fps), ASUS G53 (41 fps) and the MSI GT680R (55 fps). However, note that all three of those machines have higher 1080p displays to support.Regardless, the m14x gamed like a champ when playing such titles as World of Tanks and Call of Duty: Modern Warfare 2. Latitude X200 Battery , We averaged about 33 fps in the former title and 74 fps in the latter. The 14-inch display showed plenty of detail, and action was smooth as bullets and bombs flew overhead. The small but powerful speakers definitely added an extra dimension. Like the M17x we reviewed, our configuration of the M14x came with a built-in Wireless HD transmitter, which beams data at up to 4 Gbps on the 60GHz spectrum, Studio 17 Battery , and has an effective range of up to 30 feet. Our configuration of the M14x came bundled with a Vizio XWH200 receiver. After connecting the receiver to our TV via HDMI, and plugging it in, we opened the WiHD utility on the M14x, which recognized the receiver and let us connect instantly.Studio 1745 Battery
The Lenovo G570 15.6-Inch Laptop, black in color, has two speakers placed at each side of the keyboard, which enables one to listen to music as they work. IBM 08K8184 , This amazing machine also uses the Core i3 technology. This places the Lenovo 43347PU 15.6 inch laptop at a level above the rest, with its extra high processing speed. It also has the 5 in 1 card reader that allows for data transfer from the variety of small sized disks, which include the micro SD, pro duo, MM1 and MM2. The display specification of the Lenovo g570 – 43347PU Laptop is a 15.6 inches TFT, IBM 08K8185 , which offers clarity with a difference. Its possession of the wireless internet provides for unique access to network connections in organizations and free internet connections through organization hot spots, making it cheap to use.IBM 08K8186
Acquiring both the Lenovo g560 and the Lenovo g570 is easily done by following online links given by genuine companies with good reviews. IBM 93P5002 , The shipping costs are included which is a huge plus, but you must be a Prime member. The other option that can be explored and is definite to getting a genuine Lenovo g460 laptop technology is by buying it direct from the manufacturing company, that is, if your location is nearby. This helps save time for transport; thus, ensuring that the Lenovo g460 laptop is delivered soonest possible after placing an order. IBM 92P1101 , The Lenovo – IdeaPad laptop is one of the top ultra-portable models out there without sacrificing power and quality. The Lenovo – IdeaPad laptop uses a hard drive with a serial ATA 300-5400 rpm. Just like the Idea Essential and the Think Pad, the Lenovo – IdeaPad laptop uses the latest technology, which ensures fast delivery of quality data. IBM 92P1091 , It is vital to find Lenovo laptop review information concerning the Lenovo – IdeaPad laptop and it’s features. One popular feature is that it has a touch for silence due to the introduction of the intelligent fan that reduces both on energy consumption and providing silent operations. It also has proper air ventilation that prevents overheating during high resource-consuming operations.IBM 92P1090
Lenovo – IdeaPad laptop model U260 12.5 Inch ultraportable notebook runs on an Intel Core i3-380UM processor, IBM 92P0994 , which is very fast in making the delivery of processed information from the raw data ultra fast. This works well with the DDR3 RAM, making this machine even faster. Be sure to find honest Lenovo laptop reviews for verification of feature quality. The Lenovo IdeaPad laptop is, therefore, fast and quite affordable as the DDR3 is cheaper compared to other versions of the RAMS such as the DDR1 and DDR2. IBM 92P0996 , The RAM ensures that even the high resource programs are run with ease, and that the operations are fast enough. The Lenovo – IdeaPad laptop U260 has a hard drive that can store all the necessary working programs, as well as documents with its capacity of 320 GB. The 12.5 inch TFT display offers clarity in use and can be used to watch movies with perfect delivery of motion pictures.IBM 92P1057
The Lenovo Y570 08622JU 15.6 Inch Laptop is an IdeaPad variant, IBM 92P1089 , which is a huge boost in the technology of the laptops. It has an amazingly fast processor with the core i7 technology, which makes it the fastest among other Lenovo IdeaPad laptops. Coupled with this is the 8GB RAM. Lenovo laptop reviews reveal that this machine is highly effective with execution of its processes and running of programs. IBM 92P1088 , It has a 15.6 inch display that offers the best clarity when working on the well positioned keys of its keyboard. To top up the wonderful features of this machine is its 750GB high capacity hard drive that provides enough resources for executing operations.Buying a Lenovo – IdeaPad laptop is easy and direct. It can be done by ordering from the online market through following links. IBM 92P1087 , It is definitely worth your time to research Lenovo products such as the Lenovo – IdeaPad laptop U260 and the Lenovo Y570. This will also provide Lenovo laptop reviews for better understanding of the product, helping to provide a guideline as well as partial solutions to minor problems.The other option of getting the Lenovo Idea pad laptop is through direct purchase from the company, only if your location is in proximity of the sales offices. IBM 92P1075 , It should, however, be done after thorough research of the exact features of the product required so as to feature your needs. The Lenovo – IdeaPad laptop is surely a touch of class and quality, and acquiring it is a small and direct process.IBM 92P1074
The Lenovo g570 43347PU 15.6 inch laptop is also a great creation of the Lenovo G series, IBM 08K8194 , and it enjoys high powered specifications, just like the Lenovo g560 laptop. It operates on a second generation processor of the Core i3 technology, which is very fast when it comes to its operations. It comes with a 64 bit genuine, windows 7 home premium operating system, with a 15.6 inch LCD display that offers the needed clarity. To add to its superb features is a 4GB RAM, which makes it an ultra fast machine. IBM 92P1010 , It has the necessary space to allocate resources during high powered programs such as games and other office related software that require more resource allocation. The 500 GB hard drive also offers enough storage for office work and important software.The full specifications of the Lenovo g560 laptop and the Lenovo g570 are available in the Lenovo laptop reviews, IBM 92P1011 , and can be viewed directly on clicking on the link provided in the Amazon.com website. The Lenovo Company, in collaboration with the many online offers, offers free shipment for the Lenovo laptops, thereby giving everyone the chance to use this new technology.IBM 92P1058
The only disadvantage with the Lenovo g560 laptop is that one of the control keys is replaced by another key, IBM 92P1071 , but with time, one learns to use the other control key for the intended purposes. When thinking of a laptop that is most efficient and fast in working, then the Lenovo g560 laptop is the first consideration.The Lenovo g460 laptop is an impressive bang for the buck computer considering its strong features. It is an amazing product with amazing features, however one must pursue the newer model in the Lenovo g560.IBM 92P1070 , The Lenovo g460 still serves as the introduction to the Lenovo laptop technology. It is an improvement of its earlier version and its new cousin, the Lenovo – IdeaPad laptop, and comes with even better improvements such as an increase in the size of the plastic casing, making it even more durable and reducing its fragility.IBM 92P1067
The Lenovo g560 067ALU 15.6 Inch notebook has a processor with the i5 core technology that makes it a click and process machine, coupled with the 4GB ram. IBM 92P1062 , While referencing Lenovo laptop reviews, one will find that it runs on an Intel Pentium processor and motherboard that ensures quality and fast delivery. It also has ample storage for documents and music, with 500 GB hard drive. This goes well with the speakers located at the side of the keyboard. This makes the Lenovo g560 067ALU 15.6 Inch notebook appropriate for use by persons from the teen age and upwards, IBM 92P1060 , as the features are an attraction to all who enjoy gaming. The 15 inch TFT screen offers clarity like no other, and watching movies is the same as looking at people in real life. This version of the Lenovo G series ranks highly, and it is one of the most popular machines despite it being an earlier creation yet truly builds upon the Lenovo g460 laptop.Vostro 1200 Battery
As with other Alienware notebooks, we love the customizable backlighting on the M14x. Studio XPS 13 Battery , You can change the lighting on the keyboard, the logos, the front grille--even the ring around the touchpad--to a number of different colors. The AlienFX utility is fun to use; you could easily spend a lot of time tinkering with the color schemes. When running our heat test--streaming a Hulu video at full screen for 15 minutes--the M14x stayed cool. Studio XPS 1340 Battery , The touchpad was 83 degrees, the G and H keys were 81, and the underside was 84. However, when we were gaming, temperatures quickly increased into the 90s, and the right wrist rest got as hot as 100 degrees, which was very uncomfortable.Worse, the M14x's cooling fan kicked on frequently and was quite loud. While you probably won't hear this rig over gaming explosions, it was very noticeable in a quiet room. Studio XPS 16 Battery , Alienware told us that they are aware of the issue and are looking to correct it via a firmware update. Aside from the backlighting, the Alienware M14x's keyboard was a pleasure to type on; the keys are large and have excellent response when pressed. We dare say it's as comfortable to use as a Lenovo ThinkPad keyboard.Studio XPS 1640 Battery
The Synaptics touchpad below is a decently sized 3.2 x 1.8 inches. Studio 1557 Battery , It's smooth but provides little friction. We found multitouch gestures fairly easy to execute, though you must turn them on in the control panel; Alienware ships its systems with multitouch deactivated. The 14-inch display on the M14x has a sharp resolution of 1600 x 900, which gamers will appreciate. Whether we were watching movies or playing games, images looked crisp and colors were deep. Despite the notebook's glossy finish, reflections weren't too distracting. Studio 1555 Battery, Two speakers mounted above the M14x's keyboard offered very good sound for a 14-inch system. While not as good as the Dell XPS 15, the M14x offered enough bass when playing games or listening to music, and mid to high tones were well defined, too. The lower notes in Bruce Springsteen's "I'm on Fire" and Jay Z's "Big Pimpin" were much more present than on the Digital Storm xm15. On the left side of the M14x are a 4-in-1 memory card slot and a SIM card slot (the M14x supports mobile broadband), Studio 1537 Battery , as well as two headphone ports and a mic port. Also on the left is a chargeable USB 2.0 port, DisplayPort, VGA, and HDMI. On the right are a slot-loading DVD drive, two USB 3.0 ports, and an Ethernet port.Studio 1536 Battery
COMPAQ 6531s Battery
The Envy 14, HP’s premium 14.5-inch entertainment system,Compaq 515 Battery , now has a Synaptics imagepad touchpad, which will offer a greater number of gestures and control. The notebook comes with HP’s BrightView Infinity LED display, AMD graphics, USB 3.0, and Beats Audio. Starting at $999, it looks like it will remain competitive with the MacBook Pro. Compaq 516 Battery , HP’s netbook, the Mini 210, received the most radical makeover, with a whole palette of color options–charcoal, crimson red, luminous rose, ocean drive, pacific blue, and sweet purple–and a new design to match. The 10-inch netbook, which will run on Intel’s Atom processor, also has Beats Audio technology, a nice touch for a system starting at $299. Compaq presario b3800 Battery , Like any good business partner, a laptop used in an office environment needs to meet certain criteria: It must perform well, last a long time, and not give away any of your trade secrets. You also want it to make you look good. The EliteBook 8460p ($1,199 as tested) exceeds all of those requirements. This redesigned notebook sports a rock-solid but elegant aluminum finish and features a silky smooth glass touchpad and improved SRS sound. Compaq presario b2800 Battery , Just as important, this system combines second-generation Core i5 power and AMD graphics with enough battery life to get you through those marathon meetings. Add in top-notch security tools and you have a notebook that lives up to its name. Is the latest EliteBook the king of business machines?Compaq Presario B1900 Battery
The EliteBook 8460p benefits from HP's revamped DuraCase design. TouchSmart tm2-2000 Battery , Decked out in a cool platinum color, this business laptop features a bead-blasted aluminum lid (which minimizes smudges and fingerprints) and a brushed aluminum deck. We also appreciate the large button on the front of the notebook for easily unlocking the lid, and subtle touches such as the engraved EliteBook logo to the left of the touchpad. TouchSmart tm2-2100 Battery , Overall, the 8460p has a sleeker, more modern aesthetic than the latest Dell Latitudes and Lenovo ThinkPads.The 8460p's durability continues with cast titanium-alloy hinges, as well as a new DisplaySafe frame that has a ring of rubber around the entire bezel to protect the screen. HP used magnesium for the base, TouchSmart tm2t Battery , which features an easily removable panel for upgrading components. To prevent damage from liquids, the laptop features both a spill-resistant keyboard and a bottom-case drain for spills. Like Dell's Latitude E6420, HP says the 8460p is tough enough to meet the MIL-STD 810G standards for drops, vibration, dust, temperature, and shock.TouchSmart tm2t-1000 Battery
The trade-off for this robustness is that the EliteBook 8460p is thicker and heavier than its predecessor. 3105m Battery , This machine weighs 5.4 pounds and measures 13 x 9.1 x 1.3 inches, while the 8440 weighed 5.2 pounds and was 1.2 inches thick. The Toshiba Tecra R840 has a much sleeker 1.1-inch profile and weighs 4.6 pounds--making it easier to carry in a backpack--but it's not as rugged. ProBook 5220m Battery , To be fair, the Dell Latitude E6420's tri-metal chassis is just as thick as the EliteBook and weighs 6.2 pounds with a nine-cell battery. Typing on the EliteBook 8460p is a pleasure, thanks to a spacious isolated-style layout with keys that provide strong tactile feedback. The keys also have a slightly gritty texture and a subtle curvature that made the experience comfortable. Compaq 408545-262 , Our only complaint is that the Enter key is a bit small, as are the Up and Down arrows. While the keyboard isn't backlit, you can press a button above the screen to pop out a small LED that partly illuminates the deck. Compaq 408545-621 , A narrow and recessed power button sits above the keyboard on the left, and to the right you'll find three quick-access buttons for toggling the Wi-Fi connection, launching Internet Explorer, and muting the audio. When the EliteBook 8460p is off, the second button launches QuickWeb for getting online without booting Windows.Compaq 408545-721
HP makes a big deal about the fact that the EliteBook 8460p features a chemically strengthened glass touchpad. Compaq 408545-741 , (Apple also uses glass for its MacBook line.) We could easily glide the cursor across the wide--but not very tall--4 x 1.9-inch surface. Pinching to zoom worked fairly well, despite a bit of lag, as did the rotate and two-finger scroll gestures. Compaq 408545-761 , We also easily three-finger-flicked through photos.We encountered one alarming glitch early on in our testing. On two occasions, the cursor seemed to disappear each and every time we put our finger on the touchpad, even though the pointing stick continued to work properly. However, updating the Synaptics driver seemed to fix the issue. Compaq 409357-001 , Even after the update, though, we found that accidentally brushing up against the touchpad with our left hand while trying to move the cursor stopped us in our tracks.Business users who prefer a pointing stick will find a decent one between the G and H keys. With plenty of separation between the keyboard and stick, the raised nub is easy to find by feel, Compaq 409357-002 , but the concave shape made manipulating the cursor somewhat slippery until we got the hang of it. We prefer the convex, grippy surface of Lenovo's TrackPoints. The two sets of mouse buttons, which are wide and have a rubberized feel, worked well.Compaq 415306-001
The EliteBook 8460p features a 200-nit, 14-inch display. Compaq HSTNN-DB16 , The matte panel looks fairly bright, but we had to push the lid back further than we'd like to prevent images from washing out. While we could make out plenty of detail in an episode of Glee played on Hulu, horizontal viewing angles were narrow.For a business laptop, the EliteBook 8460p pumps out a fair amount of volume. Compaq HSTNN-DB05 , The two speakers on the left side of the system--one on the front lip and one on the bottom--got fairly loud when we played "Ready to Start" from Arcade Fire and "Pyro" from Kings of Leon on Slacker. The SRS Premium Sound control panel lets you easily enhance the audio for music, voice, or movies. The left side of the EliteBook 8460p houses the DVD drive, Compaq EQ441AV , ExpressCard slot, SD Card slot, two USB 3.0 ports, FireWire (though we don't know who still uses that), and a power jack. A headphone, microphone, USB 2.0/eSATA port, and another USB 2.0 port that can charge gadgets line the right side of the laptop, along with a DisplayPort and lock slot. The bottom of the 8460p has a docking connector.Compaq DAK100520-01F200L
The EliteBook 8460p features an HD webcam that record footage up to 720p.Compaq 983C2280F , Using the HP webcam software, the footage we recorded exhibited good color accuracy but we noticed a fair amount of pixelation at full screen. Video chats in a smaller window over Skype looked better. Given that the chassis has plenty of room for ventilation, we weren't surprised by the EliteBook 8460's cool temperatures.Compaq 446399-001 , After playing a Hulu video for 15 mintues, the EliteBook 8460p registered 90 degrees between the G and H keys, 88 degrees on the touchpad, and 89 on the bottom of the laptop. Those numbers are all well below the 95-degree threshold, when things start to get uncomfortable. Compaq 446398-001 , Our configuration of the EliteBook 8460p packs a 2.5-GHz Intel Core i5-2520M processor, 4GB of RAM, a 320GB 7,200-rpm hard drive, and a 1GB AMD Radeon HD 6470M graphics card. In PCMark Vantage, which measures overall system performance, the notebook scored 6,449. While that showing beats the 14-inch laptop category average (4,997), Compaq 443885-001 , the Toshiba Tecra R840 (which has the same CPU, RAM, and a 7,200-rpm hard drive) scored a higher 7,728. However, the cheaper $1,079 Fujitsu LifeBook S751 (2.5-GHz Intel Core i5-2410M, 4GB of RAM, 320GB, 7,200-rpm hard drive, and Intel HD 3000 graphics) earned 7,983.Compaq 443884-001
Our second recommendation, the HP Envy 17, 541 Battery , is a bit understated in the looks department, but it’s sure to get the job done. Yes, the HP’s chassis may be stark (yet beautiful), but the Envy 17 is packing major power under the hood. Namely, its got the Core i7 processing power you need, discrete graphics support thanks to an AMD Radeon 6850M graphics card, and 6GB of RAM. COMPAQ 6520S Battery , That configuration will cost $1,649, but it doesn’t include a solid state drive. The only HP Envy 17 config to include an SSD is a 800GB hybrid storage drive with a 160GB SSD and a 640GB, 7,200-rpm HDD, and thathardware adds $610 ($2,129) to the total price of the system. COMPAQ 6530s Battery , If you can forgo the convenience and protection of an SSD, you can enjoy the Envy 17′s humongous 1.5TB storage drive with a still-quick 7,200-rpm spin speed.Today HP announced refreshes to several of its consumer and business notebooks. The HP ProBook 5330m, EliteBook 2560p, EliteBook 2760p, Pavilion dv4, Envy 14, and Mini 210 all saw changes,COMPAQ 6531s Battery , some big some small. More significantly for the business set, though, the company also launched DataPass, a prepaid mobile broadband service that will be available as an option on a number of its business notebooks.COMPAQ 6535S Battery
HP’s DataPass acts much like an MVNO; Probook 4530s Battery , the company bought unused 3G spectrum from Sprint, and is now selling it for $5 for 75MB, and$30 for 1GB. So while it’s not going to let you stream Hulu to your heart’s content, it will serve in a pinch for road warriors who need to stay connected. In order to use the service, ProBook 4436s Battery , you must have a notebook outfitted with the Gobi 1000 (HP un2400) or Gobi 2000 (HP un2420) broadband module. Where will it work? The coverage map is to the right. On the business side, the ProBook 5330m (shown above) is the latest beneficiary of HP’s FORGE design, which features a two-tone brushed aluminum chassis, and a backlit island-style keyboard. ProBook 4435s Battery , Trying to lure in a younger audience, this 13-inch notebook also features Beats Audio, heretofore only seen on HP’s consumer systems. Processor options include Intel second-gen Core i3 and i5 CPUs. Of course, they have business goodies such as optional vPro technology, TPM, and fingerprint readers. The HP ProBook 5330m starts at $799.Probook 4431s Battery
Cosmetically, not much has changed with the EliteBook 2560p and the EliteBook 2760p, Probook 4430s Battery , except that the former now has a 12.5-inch display in a 16:9 aspect ratio, and also crams in an optical drive.The 12.1-inch 2760p convertible tablet can be outfitted with Core i5 and i7 processors, and will also support DataPass, HP’s new prepaid mobile broadband service for laptops. Probook 4331s Battery , The 2760p starts at $1,499 and is available now; the 2560p will start at $1,099 and will go on sale starting May 23.The new 14-inch Pavilion dv4 follows the same design aesthetic as the redesigned dv6 and dv7. While it has a plastic, not a metal lid, it has an island-style keyboard, Probook 4330s Battery , and the back edge of the system has “Hewlett-Packard” spelled out like you’d see on a classic car. Consumers will get to choose from AMD and Intel CPU options, as well as AMD Radeon graphics. HP also updated its CoolSense technology (a combination of hardware and software that keeps the notebook cool), simplifying the user interface. The system will start at $599, and be available on May 18.TouchSmart tm2-1000 Battery
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