... alloy 4000Mah Single USB Solar power bank Specification:*Single USB output power bank, full aluminum case, under the cover*Polymer ... , 3 block toggle switch charge and discharge recognition overcurrent charging software and hardware double protectionInput and output current:*Working voltage and ... .5V 70mA*Operating voltage: 5.5V (max)*Charging current: 1000mA*Output voltage: DC4.5V, 5.5V, 6.5V, 9V (set ...