Moshi IonBank 10k Portable Battery Pack for iPhone/iPad/iPod - Gray Stylish aluminum casing with vegan leather accents. Hideaway Lightning and USB cables with a sleek folding design. Fast-charging at 2.4 amps (24 watts total). Fully charge your iPhone 4 times with 10,300 mAh lithium-polymer cells. SmartSense circuitry charges connected devices and recharges IonBank at the same time.