... discharge.2.It supply power for digital device like Iphone, Ipad, Samsung P1000,cell phone,mp3,mp4 and ... .Charge digital device like cell phone,ipad,mp3,mp4,iphone,psp .1. Connect USB cable to USB port ... can charge digital device with 5v such as ipad, iphone 3g/4g, mobile phone,mp3,mp4 and PSP ... . Don’t collision, strike, disassemble or try to repair it by yourself .Keep battery charger dry and avoid ...