Single battery voltage: 3.7V Nominal voltage after the battery pack is assembled: 3.7V Single battery capacity: 1200mAh Battery combination: 1 string and 1 parallel Battery voltage range after combination: 2.5V~4.2V Battery capacity after combination: 1200mAh Battery pack power: 4.44W Battery pack size:6*35*53mm Maximum discharge current: <1.2A Instantaneous discharge current: 2.4A~3.6A Maximum charging current: 0.2-0.5C Charge and discharge times: >500 times