The capacity of the battery is divided into the rated capacity and the actual capacity. The rated capacity of the battery refers to the amount of electricity that the battery should supply when it is discharged to the final voltage at a rate of 5 hours at an ambient temperature of 20°C and 5°C, and is represented by C5. The actual capacity of the battery refers to the actual power released by the battery under certain discharge conditions, which is mainly affected by the discharge rate and temperature (so strictly speaking, the battery capacity should specify the charge and discharge conditions).