The capacity of a battery can be divided into rated capacity and actual capacity.
The rated capacity of a battery refers to the amount of electricity that should be discharged under certain discharge conditions, as specified or guaranteed during the design and manufacture of the battery. The IEC standard defines the rated capacity of nickel cadmium and nickel hydrogen batteries as C5, which refers to the amount of electricity released when charged at 0.1C for 16 hours and discharged at 0.2C to 1.0V in an environment of 20 ℃± 5 ℃.
For lithium-ion batteries, they are charged at room temperature with a constant current (1C) - constant voltage (4.2V) for 3 hours, and then discharged at 0.2C to 2.75V as their rated capacity. The actual capacity of the battery refers to the actual amount of electricity discharged under certain discharge conditions, which is mainly influenced by the discharge rate and temperature (therefore strictly speaking, the battery capacity should indicate the charging and discharging conditions).
The unit of battery capacity is Ah, mAh (1Ah=1000mAh)
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