... digital equipment electricity shortage problems. 1: 5.0V, charging voltage 2, the charging current: 500mA3: 2200mAh, battery capacity 4, the ... , material: plastic. 4, LED color display: charging charging light red, green. 5, the charging LED lamp color display: red≤30%, orange≤30 ... to the charging voltage in the range of 5.5V digital mobile equipment 2200mah battery portable power station for mobile ...