... . The connector is standard USB design, inner there is 2500mAh Li-battery. 3. It has unique circuit design, which can indicate the ... charging performance, also can improve the battery’s service efficiency. 4. Without any external power, it can ... than 5V, e.g. iPod, iPhone, PAD, mobile phone, digital camera, MP3, Mp4 and so on. UPS battery bank for mobilephone