... 000mAh (theoretically 5,000mAh, actually 4,000mAh) Battery type: Li-polymer battery Input voltage: 5V DC Features: Works with most MP3 players, PDAs ... ,000mAh (theoretically 5,000mAh, actually 4,000mAh)Battery type: Li-polymer batteryInput voltage: 5V DC, 1.0AOutput voltage port 1: 5. ... cable8 x adapters 5,000mAh USB Output Power Bank/Portable External Battery Pack for iPad/iPhone/Nokia/MP3/USB Device