Now, various brands of lithium batteries on the market are mixed, and it is hard to tell whether they are good or bad!

Check the appearance and packaging

First, the packaging and appearance of lithium battery products can be identified. Although the general product looks deceptive, some inferior products can also be screened out from the appearance.

Components compared

The components of a lithium battery are proportional to the capacity. If it is a polymer lithium battery, the difference in the components is too large, and the capacity will inevitably be insufficient, but some batteries have their own differences in capacity. In addition, it can also be seen from the packaging that the weight of the battery is relatively heavy. If the heavy person prefers a high-quality lithium battery.

Test internal resistance and maximum current

In fact, the fastest way to test the performance of a lithium battery is to test its internal resistance and maximum discharge current. High-quality lithium battery with small internal resistance and large maximum discharge current. Select the 20A range of the multimeter and directly short-circuit the lithium battery with two electrodes. The current should generally be around 10A, or even higher, and it can last for a period of time. A relatively stable battery is a good battery.

Test site work

During the live operation of the lithium battery, if the utility pole that has been discharged continuously for about 10 minutes does not heat up, it means that the battery guard system is perfect.

Look at the soft case

Most of the batteries used in lithium batteries are soft package batteries and 18650 batteries, which are also commonly used materials for lithium battery packaging. The first thing to check is that the battery is brand new, as there are some small factories on the market that make lithium batteries from used batteries. Soft-packed lithium battery, also known as polymer battery, is a soft-packed electrolyte, a gel-like battery that can be made into a variety of shapes, with high battery safety and will not burst.

Shenzhen Topband Battery Co., Ltd.，established in 2006, is a wholly-owned subsidiary of Shenzhen Topband Co., Ltd. (002139.SZ). We focus on lithium iron phosphate batteries,with independent research and development in cells and BMS. With the ability to integrate the entire industry chain, we are committed to providing customers with one-stop lithium battery solutions and services. Our quality products are widely used in energy storage and light power.