Lenmar PowerPort Boost - Backup Battery Charger, 1500mAh, for Apple iPhone 4s, iPhone 4, iPhone 3GS, iPhone 3G, iPod Touch (all generations), iPod Classic, iPod Nano
Lenmar's PowerPort Boost provides power-on-the go for your iPhone and/or iPod. With the Boost, you no longer have to worry about your iPhone dying in the middle of an important phone call or your iPod battery running low during your morning jog. The PowerPort Boost is the perfect solution to every day backup power for your Apple devices. Works with most iPhone and iPod cases for added  convenience.The PowerPort Boost for Apple is compatible with iPhone 4s, iPhone 4, iPhone 3GS, iPhone 3, iPod Touch(all generations),  iPod Classic, iPod Nano (all generations) and the iPod Video. This is  not compatible with the iPod shuffle.