portable battery charger for iPhone 4 4S 1.2000mAh, ... USB charging,such as iPod,MP3 2000mAh 5000mAh portable battery charger for iPhone 4 4S,iPod,PSP,GPS, ... materials,feel comfortable,wear resistance.5000mAh high- capacity lithium polymer core can be provided for the 7-8 ... block of ordinary saturated lithium batteryDurable,charge and discharge cycle ≥ 500 timesIntelligent contral, ...