a spare battery for electronics 1.Auto setting output voltage 2.High Capacity: 51Wh 3.Out current:4.5A 4.USB output:5V/1.5A A spare battery for electronics1.Auto setting output voltage2.High Capacity: 51Wh3.Out current:4.5A4.USB output:5V/1.5A I. Application: Notebook, Micro-projector , Mobile phone, iphone / ipod / ipad , Tablet PC , DSC , DV, E-Book , MP4, GPS , PSP , PDA ....... and so on. ...