Battery capacity: 5,000mAh (theoretically 5,000mAh, actually 4,000mAh) Battery type: Li-polymer battery Input voltage: 5V DC Features: Works ... , compact for easy carryingSpecifications: Battery capacity: 5,000mAh (theoretically 5,000mAh, actually 4,000mAh)Battery type: Li-polymer batteryInput voltage ... 000mAh USB Output Power Bank/Portable External Battery Pack for iPad/iPhone/Nokia/MP3/USB Device