Take your pick and Power UP with the JammyPack rechargeable battery. Choose either the 3000mAh or 4400mAh to power your JammyPack and charge any device via USB. NOW INCLUDES iPhone 5 & 6!
4400mAh: Everything the 3000mAh does, but better. (and even has a built in flashlight!) Measuring only 3.5" long and 1.75" wide, this guy will play your JammyPack for days without recharging and boasts over 5X the power of an iPhone. Beef up with this CurbSquirrel.