With the rapid increase in the level of lithium battery technology, the cost of lithium battery is also declining. The advantages of higher energy density, lighter quality, smaller pollution, and longer service life make lithium batteries more and more valued in the industry in the fields of electric bicycles.

At present, the lithium battery fish dragons in the market are mixed, and it is difficult to distinguish. How to choose a new national standard lithium battery, which has become a dealer and consumers burning eyebrows! Let's take a look at the lithium battery manufacturers.

1. Check the appearance and packaging

The quality of a battery can be judged first from the appearance and packaging. A product that does not even do the details on the packaging is definitely not a professional product. The appearance can help us choose some inferior products.

2. Compared with weight

The weight of the lithium battery is directly proportional to the capacity. If the lithium battery of the polymer is too large, the capacity will definitely lack, but there are differences in the size of some batteries. In addition, you can also perceive whether the battery weight is relatively heavy from the outer packaging.

Third, test internal resistance and large electricity

In fact, the detection method that distinguishes the function of lithium batteries is to test internal resistance and large discharge current. Good quality lithium batteries, very small internal resistance, large discharge current. Select a multi -purpose watch with a 20A range, and the two electrodes of the lithium battery are directly connected to the lithium battery. The current should generally be around 10A, or even higher, and can maintain it for a while. The relatively stable is a good battery.

Fourth, detection and power work

During the working process of lithium batteries, if the battery is not hot for about 10 minutes, the battery protection board system is complete. Generally, the quality of lithium batteries with high -quality protective boards is better than ordinary lithium batteries.

5. Look at the battery cell

An important component in a battery is undoubtedly its battery cell. Nowadays, most of the battery cells on the market are soft bag battery cells and 18650 battery cells. These two are also more common lithium battery packaging core data. First check whether the battery cell is brand new, because there are some bad small workshops on the market using second -hand battery cells to make lithium batteries. Soft bag lithium battery is also called polymer cells. It is a soft packaging electrolyte battery, which can be made into various shapes. The battery safety is high and will not blast. The current electric vehicle battery is basically 18650 battery cells, which are mainly based on lithium iron permanganate and ternary of lithium iron phosphate.