... 1000mA 3. built-in battery: 3.7V,1800mAh 1000mA external potable power source:1. Fashionable design, aluminum shell, good performance components ... improve the battery’s service efficiency. 4. Without any external power, it can charge all the electronic equipments whose output ... less than 5V, e.g. iPod, iPhone, PAD, mobile phone, digital camera, MP3, Mp4 and so on. 1000mA external potable power source