PowerSkin for Apple iPhone 5 Review @ TestFreaks
 

This product features a rechargeable built-in 1500 mAh battery, surrounded by a silicone shock absorbing case. Although 1500 mAh will not fully recharge a drained iPhone 5 it will provide 70% more additional capacity to get you through even the most data consuming days.

http://blog.testfreaks.com/review/re...pple-iphone-5/