... 5V , 1000mA 2. DC output: 5V, 1000mA 3. built-in battery: 3.7V,2200mAh UPS battery bank for mobilephone:1. Fashionable design, aluminum shell ... 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 ...