CasePower A29i Lithium Polymer (LiPo) 680mAh Black

Credit Card iBooster f/iPhone 5, Li-pol 680mAh The Credit Card iBooster is a stylish rechargeable 680mAh battery in a super-thin finish. It provides an extra boost of battery time just when you need it. Keep it in your wallet, bag or pocket and stay powered with your iPhone 5 at all times. It has a built-in Lightning cable and you can also use it to charge your iPod.

-Emergency power to keep in your wallet, pocket or bag
-Built-in Lightning cable for easy charging on-the-go
-Apple certified
-25-30% extra charge for iPhone 5
-Extended talk time by up to 1-2 hours