How to detect the quality of lithium battery ? The routine items of lithium battery quality inspection include the external performance and internal performance of the battery. The external performance includes whether the appearance is deformed or scratched, whether the hardness is sufficient, whether the weight meets the standard, etc.; the internal performance includes capacity, internal resistance, voltage, etc., and so on.
1. The fastest inspection method is to test the internal resistance and the largest discharge current. Good quality lithium battery, the internal resistance is very small, the maximum discharge current is large. Using a multimeter with a range of 20A, short-circuit the two electrodes of the lithium battery directly, the current should generally be around 10A, or even higher, which can last for a period of time. A more stable battery is a good battery.
2. Look at the appearance. The appearance is regular and smooth, such as lithium batteries of about 2000mAh, if the production technology level is high, the volume is relatively small compared to the volume with slightly poor quality. More refined workmanship or more plump packaging.
3. Look at the hardness. The middle part of the lithium battery can be squeezed lightly or moderately by hand. The hardness is moderate, and there is no feeling of soft squeeze, which proves that the lithium battery is a relatively high-quality battery.
4. Look at the weight. Open the outer packaging to see if the battery is heavy. If it's heavy, it's a premium battery.
5. During the charging process of the lithium battery, if the two poles of the battery do not heat up after continuous discharge for about 10 minutes, it proves that the battery protection board system is perfect. Generally speaking, the quality of lithium batteries with high-quality protection plates is better than that of ordinary lithium batteries.
Tel: 15986414354
Email: 784691953@qq.com
Website: www.deryenergy.com
Address: Room 206, Room 201, No. 52 Science Avenue, Huangpu District, Guangzhou, China