... charge all iphones and Ipad,other mobile phone External cell phone battery charger for Iphone 4SProvides 360° protection for Apple's iPhone 4 With ... cells to make sure batteries in high and full capacity2)Protection: Dual IC chips,that can anti-shortcircuit, anti-overcharger, anti ... ) Good consistency, low self discharge10) Light weight, small size External cell phone battery 2Ah-5Ah