iPWR 1800mAh backup battery for iPhone/iPod Highest capacity 1800mAh with smallest dimension, top-rated battery pack on market. Offcially certified by Apple, imprinted with "Works for iPhone" and "Made for iPod". works with most of Apple's handheld devices, including the original iPhone, the iPhone 3G, the iPod Touch (first and second generations), the iPod Video, the iPod Nano (third and fourth generations), and the iPod Classic. Extends Music up to 40 hours, Extends Video up to 10 hours and Extends talk time up to 7 hours Rechargeable, can be recharged through MiniUSB cable (included) with computer or USB charger.