Power station for ipad power bank/backup battery for ipad Battery--:Li-ion 3.7V 7800mAhInput--DC 5.5V Max 2000mAOutput--USB 5.2V Max2100mAOutput watt--Max 28.8WH(7800mAh)Charging time:8 hours(It is also related with the watt of charger)Dimension--60*94*22mmShell material-environment-friendly ABS plasticWorking temperature--0°C-50°CWeight--200gSingle-lens reflex camera, Hand-held DViPad iPhone 3GS 4G iPodUMPC-Notebook with 5V input, UMPCVehicle and personal tracking GPS Satellite Positioning deviceMobile phones and communication devicesMP3, MP4 MP5, digital photo frame, mini speakerPortable hard disk, mini projectorPSP NDS NDSi GBA game device