... phone,PSP,GPS,MP4/MP3 at anywhere in anytime External battery pack for iphone battery pack for iphone Input:5.5V500mA Output: 5.5V800mA Capacity: 1900MAH mini USB ... connect on computer for charging this portable power) Wide compatible, Applications: Mobile phone, and MP3/MP4, PDA, PSP, iphone, And ipad, Flash ...