... battery charger 1,Portable,mini size. 2,Rechargeable polymer battery. 3,Led lighting. potable mobile power bank with usb battery charger 1 ... Charging output voltage, electric current: DC5.0V 500mAh Battery Capacity:3.7V 2200mAh Taiwan patent: M 424721 2 ... off one end speaker and replace with the LED holder, press on the button then it will shine, ... out . potable mobile power bank with usb battery charger