... .7V , 2.special universal power pack 3.high capacity 4500mA universal power pack for ipad,ipad2 Description:It is a ... from 25%,50%,75%,100%7) Press the button for about two seconds to turn it on or off ... , So it is optional for users to charge their Iphone 4G or not.8 ... use female connector, so you only need one cable for charging and discharging, easy to take. 9)3000mAh Capacity ...