Recognize the laptop battery batteries

At present the majority of laptop batteries are based on industry-standard batteries, generally divided into cylindrical and square.

Cylindrical-shaped batteries are bigger than AAA batteries, while the square batteries are roughly equivalent to the size of a Zippo lighter.

The current capacity of the mainstream batteries: cylindrical for the 3.6 ~ 3.7V/2000 ~ 2200mAh, square for the 3.6 ~ 3.7V/1800 ~ 2000mAh, so the Laptop battery in the end used how many batteries can be inferred according to the above figures, such as the IBM ThinkPad T40/T41 standard battery is 10.8V/4400mAh, then the number of batteries is 6, three-string, and two parallel, namely: the three energy-saving core series to be 3 X 3.6V = 10.8V, the two sets of series after the batteries in parallel and then get 2 x 2200mAh = 4400mAh.

The IBM ThinkPad T40/T41 enlarge battery is 10.8/6600mAh, then the batteries number is 9, using a three-string, and three parallel way, namely: the three energy-saving core series to be 3 X 3.6V = 10.8V, the two groups after the batteries in series and then parallel to be 3 x 2200mAh = 6600mAh.

Generally speaking, the difference between the enlarge battery and standard battery is that an increase of the number of batteries connected in parallel to increase capacity.

Laptop battery use precautions

To ensure the Laptop battery can maintain a better working condition when in use, there are some considerations.

(1) New bought battery should fully charged at least once, then power exhausted, formally use only after the second charge. This can fully activate the chemical effects of lithium batteries.

(2) When the notebook computer using AC power, remove the battery out would be preferable to avoid them always in charge state. It’s best to shutdown the laptop when charging, make the battery fully charged. Also, do not unplug the power in the charge half-way, and use after charging finished at least 30 minutes.

(3) If using battery-boot after a few minutes, it is best not to take over the external power supply, but to let the Dell Inspiron 5100 battery charge after runs out.

(4) Sometimes connect to AC power the battery may not charge, it is because some vendors designed to prevent battery record over-charge cycles and deliberately, and only less than 95% when battery started charging. When charging, if the shows the battery is already full, do not cut off AC power, because the battery power at this time may be just about 80%, it is best to maintain an external power supply for about 30 minutes charge time-out in order to ensure a fully charged battery.

(5) The battery should be placed in shade in order to weaken its internal self-passivation reaction speed if you don’t use it for a long-term.

In fact, there is not much to take into account about the battery usage, the difference number of times a cell can be used comes more from the battery itself and differences in the manufacturing process, choose the laptop has a good reputation is no doubt one of the guarantees for long-life battery in the future.

Why do poor-quality laptop battery explosion

There are many factors cause the poor-quality laptop Li-ion battery explosion, but the principle is because of batteries produce large amounts of heat caused high temperature and high pressure which lead the Laptop battery to fire and explosion. Common reason of the explosion caused by the following categories:

1. Heating caused batteries decomposition, combustion, and explosion. The explosion temperature varies due to the battery components, such as batteries with LiCoO4 ingredients heated to 165 ℃ 45 minutes may explode (belonging to more heat-resistant). Although usually it’s difficult to put the Dell FK890 battery heated to such temperatures, but usually in use still have to be careful not to put the battery in a place near heat sources, such as a closed car under the sun exposure and close to the engine, do not close to the fire source either. 

2. Overcharge caused the explosion. If charge the battery with an unqualified charger, while the battery protection chip failure, when the charging voltage exceeds 4.5V, if the negative electrode capacity of poor Lithium, lithium-ion batteries will be deposited to make internal short-circuit; if negative Lithium capacity is relatively strong, then the solvent is rapidly oxidized to produce a lot of heat so that the hp PB994A battery temperature get higher and lead to more reactions and emit more heat. If the charging current is large, and the stability of the batteries is also very poor, batteries temperature rise rapidly, the battery will be fire, explosion. So, the friends who buy some cheap, non brand lithium batteries had better pay attention, you can ensure that your battery protection chip works? When the VGP-BPS2C battery charge, and if you feel unusual heat you should decisively handle that.

Laptop battery quality test

Battery for notebook is important, a direct impact on the portability of laptops, so the battery test not only observe the appearance but also to use specialized software for testing. Some brands such as IBM, SONY are equipped with specialized software to detect the frequency of the IBM ThinkPad T60 battery charging, while the HP notebook can detecte charging times in the BIOS. Through these post-test software or BIOS, if you found the battery charged more than 3 times, then the battery is used, the user may require dealers to replace.

To the other brands can not detect the frequency of hp PB992A battery charging, we can through a special software to test - Batterymon. You need to install the software, the installation file is relatively small, only 400 KB.

Batterymon can detect the battery’s total running time (theoretical value), can detect the battery power, as well as the remaining duration, we should notice that the capacity of new Laptop battery   should not be higher than 3%.

After finish testing these projects, the following click on “information” in the “battery information”, you can detect some of the specific information of the battery.

Here you should look out the data in “design capacity” and “full charge capacity” columns are the same or not, for a new Dell Inspiron E1505 battery, the design capacity and full charge capacity should be the same. My notebook had been used over half a year, there are differences between the fully charged capacity and the design capacity is a normal phenomenon.

User should be carefully when purchasing a laptop battery

For the high incidence of various types of notebook computers caught fire, explosions, industry experts said that the notebook computer batteries overheating caused fire and explosions occurred at home and abroad constantly.

The fierce competition in the market to force notebook makers to seek ways to lower the costs, while the notebook computer once with the “bad” battery, easily lead to overheating, fire phenomenon, and even greater accidents and losses.

So, when using a laptop, user should how to avoid an explosion incident? In this regard, experts said, consumers need not be over worried about the Laptop battery, most of the brand notebook computers are able to ensure safety. User should take preventive measures, to pay more attention in the following areas:

First of all, we must choose well-known brands of products, and check on manufacturer related qualifications.

Secondly, always pay attention to maintenance of the Dell Latitude D800 battery, do not covet a moment to choose a cheaper second-hand battery. 

Finally, the laptop loaded the battery and at the same time connected an external power source may happen dangerous. Therefore, as far as possible to avoid using the notebook on a soft cloth, sofa and so on, and do not use directly on the legs, do not let the hp F4812A battery overcharging to avoid overheating batteries cause a risk, if necessary, match a special cooling pad.