How to detect the quality of lithium batteries

　　1. The fastest inspection method is to test the internal resistance and the maximum discharge current. A good quality lithium battery has a small internal resistance and a large maximum discharge current. Use a multimeter with a 20A range to directly short-circuit the two electrodes of the lithium battery. The current should generally be around 10A, or even greater, and it can last for a period of time. A more stable battery is a good battery. To

　　2. Look at the appearance. The fullness of the appearance is like a lithium battery of about 2000 mAh, which is relatively large. More exquisite workmanship or fuller packaging.

　　3. Look at the hardness. The middle part of the lithium battery can be tightened gently or moderately by hand. Moderate hardness and no soft grip, indicating that lithium batteries are relatively high-quality batteries.

　　4. Look at the weight. Open the outer packaging and feel the weight of the battery. If it is heavy, it is a high-quality battery.

　　5. During the charging operation of the lithium battery, if the battery does not generate heat, continue to discharge for about 10 minutes, indicating that the battery protection board system is perfect. Generally speaking, the quality of lithium batteries with high-quality protective plates is better than ordinary lithium batteries.