That's according the IEC61951-2 (2017) standards:    The rated capacity of a is the quantity of electricity (mAh) declared by the manufacturer which can deliver during a 5 h period when charging, storing and discharging under the conditions specified   Prior to charging, the cell shall be discharged in an ambient temperature of 20 °C ± 5 °C, at a constant current of 0,2 It A (0.2C) , down to a final voltage of 1,0 V.   The charging procedure for test purposes shall be carried out in an ambient temperature of 20 °C ± 5 °C, a relative humidity of 65 % ± 20 %, at a constant current of 0,1 It A (0.1C), for 16 h.  The tests shall be performed within 2 months of the manufacture date. Manufacture date is determined by the manufacturer.   The cell shall then be discharged in an ambient temperature of 20 °C ± 5 °C at at a constant current of 0,2 It (0.2C) in order to verify the declared rated capacity of the cell. Minimum discharge duration will be 5 h.   Five cycles are permitted per cell for this test, and shall be terminated at the end of the first cycle of each cell which meets the requirement. When conducting discharge performance testing all samples cells shall be tested to meet the requirements.