... 5V;2,current:500ma,charging time about 8 hours(computer's USB output current:500ma);3,current:800ma, ... port for charging,with another port connected with computer's USB port or a 5V/1A charger; ... ,External power supply:1,press the power switch,date cable is connected with mobile phone and the device, ... two sets of equipments at the same time,with date cable connectde well,press the power switch button to ...