Detection method of lithium battery quality:
1, the fastest test method is to test the internal resistance and maximum discharge current, good quality lithium batteries, internal resistance is very small, the maximum discharge current is very large. Using a 20A range multimeter, directly short-circuit the two electrodes of the lithium 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 fullness of the degree, such as the general 2000mAh lithium battery, the volume is larger. The workmanship is relatively fine or the packaging is relatively plump.
3, look at the hardness. The middle part of the lithium battery can be gently pinched or moderately pinched by hand, the hardness is moderate, and the soft extrusion is no proof that the lithium cell is a relatively high-quality cell.
4. Look at the weight. Remove the packaging to feel whether the weight of the battery is relatively heavy, if the heavy is a high-quality battery.
5, in the lithium battery charged working process, continuous discharge for about 10 minutes if the battery poles are not hot, it proves that the battery protection board system is perfect, generally with high-quality protection board lithium battery quality is better than ordinary lithium batteries.