1, the fastest test method is to test the internal resistance and maximum discharge current, good quality lithium-ion batteries, internal resistance is very small, the maximum discharge current is very large. Using a 20A range multimeter, directly short the two electrodes of the lithium-ion battery, the current should generally be about 10A, or even higher, and can be maintained for a period of time, relatively stable is a good battery.

2, look at the appearance. The appearance of the degree of fullness, for example, the general 2000mAh lithium-ion battery, the volume is more on the large side. The workmanship is fine or the packaging appears to be more plump.

3, look at the hardness. You can use your hand to lightly squeeze or moderate pinch the middle part of the lithium-ion battery, the hardness is moderate, no soft squeeze feeling is proof that the lithium cell belongs to a relatively high quality cell.

4, look at the weight. In addition to the outer packaging to sense whether the weight of the battery is relatively heavy, if the heavy belong to the high quality cells.

5, in the lithium-ion battery charged work process, continuous discharge for about 10 minutes if the battery poles do not get hot, it proves that the battery protection plate system is perfect, the general lithium-ion battery with high-quality protection plate quality are better than ordinary lithium-ion battery.

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