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