... output port 4.Smart charging circuit design a spare battery for electronics1.output current:2A2.Capacity: 4.5ah3.Two USB ... :more than 200 cyclesI. Application: Micro-projector , Mobile phone, iphone / ipod / ipad , Tablet PC , DSC , DV, E-Book , MP4, GPS , ... power adapter . 5. with Laser indicator ( or LED torch ) convenient for presentation 6. with charging/discharging LED indicator 7. Convenient to ...