What is a high rate battery

Before understanding the high-rate cells, we must first understand the high-rate. Compared with the ordinary rate, the high-rate represents the charging and discharging capacity of the lithium battery. The high-rate battery is divided into discharge rate and charging rate. The rate, "C" is used to represent the ratio of the size of the battery charge and discharge current, that is, the rate. Such as 280Ah battery, 0.5C means 140A, 1C means 280A, the same.

The difference from ordinary batteries

Compared with ordinary batteries, the biggest feature of high-rate batteries is that the charging speed is faster. If ordinary batteries are fast charged, it is easy to cause lithium deposition in the negative electrode, resulting in accelerated battery performance degradation. In severe cases, it can cause an internal short circuit in the battery, resulting in a fire and explosion. . It only takes 25 minutes for a high-rate battery to be fully charged at 3C, and it takes more than 80 minutes to charge an ordinary battery at 1C. As shown in the figure below, the charging time can be saved by more than 60%.

Precautions for high rate cells

Generally, a new high-rate battery needs to be activated. After the battery is placed for a period of time, it will enter a dormant state. At this time, the capacity is lower than the normal value, and the use time is also shortened, so it needs to be activated. The activation method of lithium battery is very simple, as long as 3 to 5 normal charge-discharge cycles can be used to activate the battery and restore its normal capacity.

High-rate batteries that will not be used for a long time should be stored in a cool and dry place in a half-charged state. It is dangerous to store the battery fully charged, and the battery may be damaged and rendered useless when stored without it. During the storage process, every 3 to 6 months, a charging cycle should be completed and a power calibration should be done.

Finally, let's introduce our high-rate cells:

Capacity: 25~100Ah;

Charging rate: 2~3C;

Discharge rate: 3~6C;

Strong low-temperature discharge capability, supporting discharge at temperatures as low as -30°C;

It can be applied to high power density applications such as engine starting, mining machinery, heavy vehicles, electric locomotives, charging stations, UPS, and energy storage.