... -ion battery pack for moble phone 2.Model:EM-6600 3.Capacity:6600mAh 4.MOQ:500PCS double usb output 5V li-ion ... MP3 player and all charging devices with a USB interface s,uch as mobile phone, iPhone, PSP, IPOD, MP3,MP4, PMP, GPS ... , Bluetooth, digital cameras. usb 5v battery portable power portable battery ...