How to check the quality of lithium batteries

1. Observe the appearance of the lithium battery. The fineness and neatness of the appearance of the lithium battery can still give some feedback on 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 the lithium battery wants to guarantee its own safety and quality, only the use of sophisticated equipment for manufacturing can there be no difference in material component and shape during the manufacturing process that affects the quality. 2. To 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 feeling, it proves that the cell of the lithium battery is a relatively high-quality cell. 3. Detecting the internal resistance and maximum discharge current of the lithium battery The fastest way to check the quality of the lithium battery is to detect 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 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. 4. Observation of the continued discharge of the lithium battery. When the lithium battery is working with electricity, continue to discharge for about ten minutes. If the 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. 5. Perceive the weight of the lithium battery. 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. Lithium batteries of poor quality are usually not durable. The detailed performance is that the power consumption is very fast and the time required for charging is shortened. When charging, the charger will show that it is full when it is not fully charged in the usual charging time, but in actual use, doing the same thing, the battery will run out faster than before. 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: Introduction to the advantages and disadvantages of soft pack batteries