Evaluating Environment and Process Description:

PConline evaluation room will usually receive two types of notebook computers: engineering prototypes and sales prototype. Engineering prototypes are usually not formally listed on the product, configuration, etc. are all products sold there and the formal differences between test scores for reference only, can not serve as the contrast between the machine used. Prototype, while the sales of products on the market in line with the results compared with the value. We have reviewed the article in the preamble will give a detailed description of the measured product prototypes or sales engineering prototype (under normal circumstances there is no mention of the words were selling prototype).

In order to unify the software platform, while adapting to the current tide of the mainstream operating system, notebook tests using the latest Windows Vista Ultimate SP1 English (in the past is the use of Windows XP Professional SP2 English version), with the same test platform DIY accessories. Here a question arises, if it is selling prototypes, then most likely destroyed the hard drive information, such as pre-installed operating systems and backup information, etc., so evaluation engineers, but also should first dismantle the hard disk out of the entire hard drive to do Ghost image backup , complete re-evaluation after full recovery (so it is still engineering sample of the more popular evaluation engineer). In addition, in order to simulate the use of laptop computer users real-time environment, the laptop will be sent to test all the hardware drivers installed, install the relevant software vendor’s unique, of course, when necessary, will be marked with all the software and driver patches .

Related: Sony VGP-BPS8 battery, Dell Inspiron 1525 Battery, Dell Studio 1535 battery, Dell Inspiron 6400 Battery

Laptop Lithium Ion batteries are very expensive (quite a few of them are over (WAY over, in a few cases) $200).  They CAN last 10 years (in fact I have some 1995 Toshiba batteries that are still nearly as good as new), but they can also be destroyed in less than 6 months. As an engineer who has both worked for laptop manufacturers and who services laptops, here is what I can tell you:

The most important rule of getting good life from a battery is this: If you are not traveling, if you are stationary and are going to be plugged into a wall outlet for a day or two or perhaps essentially all of the time, take the battery out of the computer entirely and store it in a cool, dry place (some people will recommend a refrigerator, but that is not necessary, will probably not make a difference that you will really notice, and can damage the battery if the temperature gets too cold (freezing)).

It’s not clear why this is necessary, and on some models it may not be necessary (your post, however, suggests that it IS necessary on your model). However, there is OVERWHELMING annecdotal evidence that this is the single most important thing that you can do to have your battery last years and years, for the times when you really do need it, when you are traveling and want to use the laptop in a car, on a plane or in various transient locations.

The two likely culprits here are overcharging and heat.

While in theory the charging circuits should shut down [COMPLETELY] when the battery is fully charged, there is evidence that in many laptops they don’t; they continue charging the battery continuously , albeit in a “trickle charge” mode. This may sound good, but in practice it can damage the battery.

Secondly, it is a well known fact that Lithium Ion batteries are terribly sensitive to permanent damage by exposure to elevated temperatures (and “elevated” in this case starts in the range of around or just over 100 degrees F (about 40C)).

With regard to elevated temperatures, storage in a turned-on laptop is problematic for two reasons. First, there is a lot of heat in the laptop (from the various laptop components: CPU, hard drive, power supply, etc.), and the battery is, to varying degrees, exposed to this heat (note, however, that battery exposure to this heat varies by model depending on the thermal design and placement of the battery relative to other heat generating components). Secondly, if the charging circuits do not shut down COMPLETELY, charging itself (even “trickle charging”) generates heat from directly within the battery itself which is harmful over time.

Now, a few more comments:

First, it’s probably not a good idea to remove the battery while you are staying in a hotel for a few days, even if you won’t need it. The risk of forgetting the battery in the hotel room when you check out is significant (you can mitigate this by leaving the battery in your laptop bag, but ask anyone who uses PC Cards about “lost dongle cables”).

Second, notwithstanding the general advice to remove a battery that is not needed and not being used, the battery needs to be exercised 2 to 4 times a year. So, once in a while, put it back in the laptop, draw it down to about 25% (NO LOWER!!) and then charge it back up to about 60% (or 100% and then back down to 60%; Lithium batteries store better with a less than full charge although in my personal experience I have not found the difference to really matter very much).

Third, if your laptop is really used as a compact desktop at home or at work and in fact doesn’t travel much, removing the battery robs you of it’s function as a “UPS”. Solution: Buy a [real] UPS. For a laptop, you only need a small one (300 to 350VA), these can be found for $40 or less (sometimes even “free after rebate”), and a UPS is a lot cheaper than using a $200+ lithium battery as a UPS but destroying it over a period of 6 to 24 months in the process.

Also note that Lithium batteries have a finite and limited life in terms of the number of charge/discharge cycles, calendar time not withstanding. Although this varies by battery model, it’s in the low-to-mid hundreds (say 300 to 600 cycles as a typical range). If you really are using your battery while traveling, charging and discharging it on a daily basis, this fact will “get you” no matter what you do. But, more commonly, people find that they have destroyed their battery without ever really using it, by leaving it in the laptop while the laptop was plugged in continuously. And we have already covered the solution to that problem.

One last comment, given the price of laptop batteries, it’s worth noting that SOME extended warranties cover the batteries. If you are really going to be using the battery heavily (see the previous paragraph), this may be worth taking into consideration when the colored shirt guy at Buy More offers you an extended warranty at the time of the laptop purchase. Find out (IN WRITING!!) if the battery is covered, and if your use pattern is such that you will probably be going through more than the initial battery over the course of the extended warranty, maybe you are in one of those situations in which an extended warranty really does make sense.

by Watzman – forums.cnet.com

Related:  HP Pavilion DV6000 battery   HP Pavilion DV9000 battery   Dell Xps M1210 battery

With the current offensive is very strong in the best selling models of  Dell Inspiron 1525  laptop, Dell Latitude D620 , for example. Trial was fair results.

1. Shutdown, the battery is full.

2. The unplugged, the battery consumption to 98%, a power grab, the bottom right of the icon displays 100% of capacity.

3. The unplugged, the battery consumption to 96%, plug the power supply, the lower right corner of the icon displays 100% of capacity.

4. Unplug the power, the battery consumption to 95%, plug the power supply, icons bottom right corner has changed now shown that “95% of the supply (power supply has been connected and is charging). ”

5. This may confirm that the Toshiba L526 laptop model system automatically charge 95% power lines. Does this mean that this series of Toshiba notebooks, the Toshiba L510 series is the type of battery. Dell Inspiron 6400 battery Acer Aspire 3680 battery

6. Similarly, other brands of computers can be tested in the same way.

The above method may be a good test computer with a charging cable, so you can make using a laptop and disconnected the battery as if they feel troubled by the readers of this based on evidence of answer the question.

If the reader used in laptop batteries follow the above rules, so no need to disconnect the battery, the laptop gives you the enjoyment of pleasure, that is, there are no vacancies right look, do not fear not the threat of a sudden power failure, the benefits of the performance of this laptop so incisive and striking.

5% of electricity consumption needs 1-2 weeks, which recharges the battery, will be 1-2 weeks time. This also happens to be in line with the supplier of the charge and discharge twice per month. Of course, not completely discharged each time. It is not important. The impact on Sony VGP-BPS9 battery SONY VGP-BPL8 battery life is not a great legend. Connect the battery used to relax with energy. Do not shoot the 10 million batteries a beautiful parade, the greatest care of the battery, the battery is properly better, while the computer is broken (like a sudden power outage damage hard disk) it is really just not worth it. Yes!

Purchase of laptops is to use and not lose its value.

Like clothing you must wear uniforms all day to reflect its value lies, do not wear every day to enjoy the hanging, it is meaningless.

The same people, to break a go, know their value, but the day nest at home, do not touch the Community to realize their own value, then you are worthless.

To use the laptop is not bad. Believe in yourself, trust your Acer Aspire 3810T laptop.

Of course, these rules do not satisfy the laptop battery is to connect the power supply, when the battery is connected, this time the battery in 1% of electricity, the system immediately to its 1% fee then disconnect the bar. However, in today’s notebook computers and accessories related to the technological maturity of the situation, this does not appear in the new models. For now still use the old notebook drives stressing that the quality of the portable player is very good, but do not worry. Therefore, this paragraph makes no sense. Reference for comparison only.

Other mobile phone brands do not test, hope that this test method can help those who have disconnected the battery to worry about whether readers.