3600mAh portable power pack (for Cell phone, iPhone, MP3/MP4, iPod, PSP, all digital devices charged via USB port) Love this powerful ... or going travel, you should not forget to take a portable power pack like this. Providing you high capacity 3600mAh battery ... , Sony Ericsson, Apple) 3600mAh portable power pack (for Cell phone, iPhone, MP3/MP4, iPod, PSP, all digital devices charged via USB port)