... 5V, 1000mA 3. built-in battery: 3.7V,2200mAh mobile phone potable power charger:It has unique ... circuit design, which can indicate the charging performance, also can improve the battery ... USB design, inner there is 2200mAh Li-battery.Fashionable design, aluminum shell, good performance ... iPod, iPhone, PAD, mobile phone, digital camera, MP3, Mp4 and so on ...