How to choose laptop battery?

In the plan to buy replacement laptop battery, we need to know how to judge the quality, generally, the quality of the battery depends on three components: cells, PCM plate, shell.

1. Replacement battery cells
The quality of cells directly determines laptop battery capacity, endurance time and number of use, so when purchase the laptop battery we should first look at its cells brand.

According to the brand, cells can be divided into three categories:
1: Sanyo, Panasonic, Sony;
2: Samsung, LG, BAK;
3: Cells produced by China's small factories;

Sanyo, Panasonic, Sony cells only used in original battery for the high price; Samsung, LG, BAK cells relative price are reasonable, all Batterycategory.com laptop batteries use Samsung, LG, BAK cells. At present, most of the cheap batteries sell on websites use China small factories' cells, the general characteristics of the batteries are cheap, short life(200-300 charge-discharge cycle), low capacity, the actual capacity of indicating 4400vmah battery general only 3,000vmah more, short standby time. Then look at its security, it should have the secondary protection, because the secondary protection can prevent the occurrence of an explosion, of course, this based on cells well performance.

And the insulating material in replacement batteries is also very important, if the insulating material failure, it is likely to lead to short-circuit, so it's dangerous even if there is a secondary protection, the insulating material should endure high temperature, it is best fireproofing before damaged in laptop battery.

2. Replacement battery PCM board
PCM plate determines the replacement battery compatibility. Typically, laptop battery manufacturers need to write a program based on original laptop battery information in the PCM board, this process need not be the same as original battery, but should match the original notebook. To compatible with the laptop, need to test the original laptop, this process will increase the company's production costs. In general, laptop battery R & D personnel can determine whether the new program compatible with the original notebook, many small and medium sized manufacturers will omit laptop battery original machine test. But not all enterprises will save this process, some large and influential non-original laptop battery manufacturers are responsible for consumers and would test the original machine in order to achieve perfectly compatible with the original laptop battery performance.

3. Replacement battery shell
Replacement battery shell should comprise fire protection material that can endure high temperature, also could protect the components inside of the laptop battery.