... , light-weight, low-profile design.Specification:1) Battery capacity: 4500mA/3.7V (Polyma Lithium-ion battery)2) Compatible with all generations Apple 4G ... 25%,50%,75%,100%7) Press the button for about two seconds to turn it on or off, So it is ... and discharging, easy to take. 9)3000mAh Capacity buildin battery can charge two times of your mobilephone.10)Whole set including: Universal ...