Battery Parameters - what we should notice when choosing a laptop battery

The battery is the heart of the laptop, is relative to where the advantages of the desktop. Most laptop battery working time mostly between 2 to 4 hours, may not be able to meet the needs of the users. Therefore, for those who need a mobile office or regular walking friends, to prepare a spare battery is also very necessary. Furthermore, the laptop battery is a kind of consumables, its performance will be significantly decreased after the use of one or two years, coupled with some users din not pay attention to the battery’s maintenance work, the battery performance of the rapid attenuation or even early retirement examples are not uncommon. So How to choose a cost-effective battery is a lot of users eager to learn .This time we will talk about the purchase of laptop battery.


The laptop battery is not generic, before buying a battery, you must first understand the type of the machine supports battery. Most notebook computers are lithium battery, that is the ordinary lithium-ion battery. There is also a lithium polymer battery, but is currently only used in some high-endultra-thin notebook. The lithium battery is usually consists of the group of batteries, protection circuits and capacity monitoring and communications circuits these several parts. From parameters, the battery’s capacity is an indicator of greatest concern. Battery capacity is usueally in 3000 ~ 4500mAh, there are also some provide 6000mAh capacity. (hp pavilion dv4 battery)



The oretically the higher the number, the longer the use of time in the same configuration. The manufacturer of the notebook battery has a more detailed description, we often can see that the nominal value of the “6-cell 4400mAh ”,” 4 core2200mAh” battery, but in fact is not the capacity of 4400mAh or 2200mAh directly determines the working hours of the notebook. When we talking about the computer power consumption, the total use is power nominal, rather than a simple current. For example, the common 2200mAh, 3.6V power cores , some may use 4 in series to form a battery pack voltage its voltage is 14.4V, the Capacity is 2200mAh. (hp pavilion dv4 battery)



But many over 14-inch notebook often use 2 parallel and 4 serise strings of 8-cell hybrid mode, the voltage remains at 14.4V, but the capacity doubled to reach 4400mAh, to ensure longer periods of time. However, the same 2200mAh, 3.6V batteries, 2 parallel and 3 serise strings of 6-cell hybrid, the battery capacity is still 4400mAh, but the voltage drops to 10.8V, If you only look at the capacity its use time should be the same as 8 cell battery. If you press the power to count, 8-cell lithium battery, its power should be 63.36Wh, 6 core battery should is 47.52Wh and 4 core battery is 31.68Wh. According to this value, the advantage of the 8-cell Li-ion battery can be reflected.(hp pavilion dv4 battery)



When choosing a laptop battery, we should also pay attenton to the battery’s appearance, generally speaking, theshell mold of the original battery is fairly standard, it will not appear install difficulty or loose when loading the battery to the laptop, in addition, when purchasing a battery, do not buy the battery that its label writing is rough and not clear. In additon, you should also notice the renovation battery that pose as the new battery, these battery electrode have heavy signs of wear, and the gloss is not good as a new battery.