... 7-8 block of ordinary saturated lithium batteryDurable,charge and discharge cycle ≥ 500 timesIntelligent contral,microcomputer intelligent power ... monitoring and displaySpeed shuttle,a key enabling all operationsAuto-sleep,non ... 4S,PSP,IPOD,MP3,MP4,GPS,Bluetooth,digital cameras and so on.Plug and play,power output using the USB port, ...