... battery charger for iPhone 4 4S,iPod,PSP,GPS,MP4...Number:MA8323Main functionAdvanced aluminum materials,feel comfortable,wear resistance.5000mAh high ... and discharge cycle ≥ 500 timesIntelligent contral,microcomputer intelligent power monitoring and displaySpeed shuttle,a key enabling all ... -sleep,non-working state automatically sleep,to prevent power lossA machine can be fit for all devices ...