Do you know lithium-ion batteries? Good bad, lithium-ion battery, do you understand how to distinguish?

　　Author ：Iflowpower – Portable Power Station Supplier

With many indigenous people, the future of lithium-ion batteries, the variety of lithium-ion batteries on the market, more and more brands of lithium-ion batteries, good and bad, difficult to distinguish the appearance and packaging first, you can pick it up from packaging Judging the lithium ion battery products on the appearance. Although the general product looks at the appearance of deceptive, it can also screen some inferior products from the appearance. The weight and capacity of the weight of the lithium-ion battery are proportional, if it is a polymer lithium ion battery, the weight is too large, and the capacity is definitely inadequate, but some battery itself has a difference in size.

In addition, it is also possible to perceive whether the battery weight is relatively sinking from the outer packaging. Test internal resistance and maximum current actually, determine the fastest test method of lithium-ion battery performance is to test internal resistance and maximum discharge current. Good quality lithium-ion battery, very small internal resistance, largest discharge current is large.

With a 20A range of multimeter, the two electrodes of the lithium-ion battery are directly short, and the current should generally be around 10A, even higher, and can be kept for a period of time, relatively stable is a good battery. Detecting charged operation In the process of lithium-ion battery, the battery is not hot for about 10 minutes. If the battery protective board system is perfect, the quality of the lithium ion battery with high quality protective plate is better than the ordinary lithium ion battery.

Most of the cells used in the lithium-core lithium-ion battery are the soft bag battery and 18650 battery cells, both of which are more common lithium-ion battery packs. First check whether the battery is brand new, because there are some poor small workshops in the market use used electrical cores to make lithium-ion batteries. The soft bag lithium battery is also known as polymer battery, is a soft-packaged electrolyte, which can be made into a variety of shapes, and the battery is high, and it will not explode.

The current electric car battery is basically 18650 cells, which is important in lithium iron-phosphate and ternary material. The 18650 battery packaging generally uses steel shells. If the manufacturer does have problems in production, it is easy to explode.