What is the method for testing the quality of lithium batteries?

Because of its high energy density and long cycle life, lithium batteries are more and more widely used in our lives. However, because lithium batteries are consumable products, they often have to be charged and discharged. No matter how good lithium batteries are, their service life has a certain period of time. When the lithium battery needs to be replaced, how do we distinguish the quality of the product we want to buy? The author of Cunneng Electric is here to analyze some methods for checking the quality of the lithium battery. I hope it will be something for everyone. help. Lithium battery quality inspection method ①Test the internal resistance and maximum discharge current The fastest way to check the quality of the lithium battery is to test the internal resistance and maximum discharge current of the lithium battery. A good quality lithium battery has very low internal resistance and a large maximum discharge current. Use a multimeter to directly short-circuit the two electrodes of the lithium battery. The current should generally be within a certain value or even higher. At the same time, the lithium battery that can maintain a relatively stable period of time is generally a good quality lithium battery. ② Observe the appearance of the fineness and cleanliness of the appearance of the lithium battery. There is still a certain degree of feedback about its quality and workmanship. The overall appearance of a well-made lithium battery must be regular, and the material and workmanship are the same. Because lithium batteries want to ensure their own safety and quality, only the use of sophisticated equipment can be used in the manufacturing process to avoid differences in material components and shapes that affect the quality. ③To check the hardness of the lithium battery, you can gently pinch or pinch the middle part of the lithium battery by hand or with a tool. If the hardness of the lithium battery is moderate, and there is no soft squeeze, it proves that the battery cell of the lithium battery is a relatively high-quality battery cell. ④ Perceive the weight Remove the outer packaging of the lithium battery to sense whether the weight of the battery is heavy. If its weight has a certain sense of heaviness, it is a high-quality battery cell. ⑤ Observation of continuous discharge During the process of charging the lithium battery, continue to discharge for about ten minutes. If the two poles of the lithium battery are not hot, it proves that the protection system of the lithium battery is relatively complete. Under normal circumstances, the quality of lithium batteries with a high-quality battery protection system is not too bad. 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 article: What impact does temperature have on the importance of lithium battery packs?