... (V): 5V Capacity: 3500MAH portable battery charger for iPhone4/IPAD/IPOD/iPhone3/MP3 MP4 portable battery charger for iPhone4/IPAD/IPOD/MP3 MP4 ... This is a portable battery for iPhone, iPad, Blackberry, Nokia, Motorola, Sony-EricssonSamsung mobile phone and all digital devices charged ... Efficiency of power conversion(90%) 3,Flash light 4,Powerful with long operation time 5,Portable and convenient 6, ...