Credit Card Thin Battery Is Perfect For Other Kinds of Emergency Charges

If you thought the American Express card in your wallet was the perfect tool for solving all of life's little emergencies, think again. This wallet-friendly backup battery can charge your iOS devices or serve as an emergency sync cable.

With just a 400mAh battery tucked inside its 7mm thick case, the card's not going to be able to charge more than one device before needing a recharge of its own. But the fact that it doubles as an ultra-compact sync cable more than makes up for that limitation. And for just $12 it even includes an LED flashlight for emergencies that don't involve uploading one last Instagram photo. [USBFever via Gear Diary]