... battery pack for iphone can charge with ipod,Mobile phone,PSP,GPS,MP4/MP3 at anywhere in anytime External battery pack for ... iphone battery pack for iphone Input:5.5V500mA Output: 5.5V800mA ... tip + USB changeable cable Environmental friendliness Economic Efficiency Long cycle life option capacity type: 1700mah,2600mAh,3200mAh,3600mAh,4200mAh