Single battery voltage: 3.7V Nominal voltage after the battery pack is assembled: 3.7V Single battery capacity: 10000mAh Battery combination: 1 string and 2 parallels Battery voltage range after combination: 3.0V~4.2V Battery capacity after combination: 20000mAh Battery pack power: 74W Battery pack size: 20*66.5*116mm Maximum discharge current: <20A Instantaneous discharge current: 40A~60A Maximum charging current: 0.2-0.5C Charge and discharge times: >500 times