Never ran out of battery when you invest on this 2200 mAh Lithium Ion Grade A Non-Recycled powerbank that illuminates in red LED light as an indicator when charging. This powerbank has a built-in USB Output and micro USB Input that has an output voltage of 5 volts/1 Amp. It can charge just about any device you can think of. It can charge most smartphones, MP3 players and more. Get this powerbank and worry no more on being disconnected!