The charging or discharging rate of a lithium battery charger is usually expressed based on the battery capacity. This speed is called the C rate. The C rate is equal to the charging or discharging rate under specific conditions, usually expressed based on the battery capacity.

This speed is called the C rate. The C rate is equal to the charging or discharging current under specific conditions, defined as follows:

I=M × Cn

Among them:

I=charging or discharging current, AM=multiple or fraction of C

C=value of Nameplate capacity, AhN=hours (corresponding to C).

The battery discharged by the lithium battery charger at the rate of one time C will release its nominal Nameplate capacity within one hour. For example, if the nominal capacity is 1000mAh, then the discharge rate of 1C corresponds to a discharge current of 1000mA, and the rate of C/10 corresponds to a discharge current of 100mA.

Integrated computer power supply

Usually, the battery capacity specified by the manufacturer's trademark refers to the capacity to discharge in 5 hours when n=5. For example, the above battery can provide 5 hours of working time when discharged at a constant current of 200mA. In theory, this battery can provide 1 hour of working time when discharging at a constant current of 1000mA.

However, in reality, due to the reduced discharge efficiency of large batteries, the working time at this time will be less than 1 hour.

So how can we charge lithium-ion batteries correctly? The most suitable charging process for lithium-ion batteries can be divided into four stages: Trickle charging, constant current charging, constant voltage charging and charge termination.