... 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 moble phoneSpecificationsWeight: 250gCapacity: 6600mAhCell type: Lithium-ion battery Dimension: ... charging devices with a USB interface s,uch as mobile phone, iPhone, PSP, IPOD, MP3,MP4, PMP, GPS, ... usb output 5V li-ion battery pack for moble phone