How to test the quality of lithium batteries?

Lithium battery quality testing methods: 1. The fastest testing method is to test the internal resistance and maximum power-off current. A good-quality lithium battery has very small internal resistance and large maximum power-off current. Adopt a multimeter with a 20A range, and the two electrodes of a DC short-circuit lithium battery. The current should generally be organized at 10A, so that it is higher and can be maintained for a period of time. The best battery is related to quietness. 2. Take a look at your appearance. The fullness level of the appearance, such as the lithium battery of the general 2000mAh organization, is relatively large. Singers are more exquisite than those whose packaging is more full. 3. Look at the hardness. It may be possible to pinch the center part of the lithium battery excessively by lightly pinching it with the hand. The hardness is moderate, and the soft kneading feeling shows that the lithium battery cell belongs to the better quality battery cell. 4. The weight of the instrument. Cancel the outer packaging to see whether the battery weight is relatively heavy. If the weight is heavy, it is attributed to high-quality batteries. 5. In the course of working with lithium batteries, if the two poles of the battery are not hot after being kept out of power for 10 minutes, it indicates that the battery protection board system is complete. The quality of lithium batteries that generally wear high-quality protection boards are better than those of common lithium batteries. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: What are the repair methods for lithium battery protection board?