There are a lot of external battery packs available for iPhones, but how about one that can recharge your iPhone up to 4 times?
The JustMobile Gum Plus is an attractive and powerful little battery pack, holding a whopping 4400 mAh of power in its aluminum case and charging just about anything with an output current of about 1 Amp. As a comparison, the NewerTech NuPower Charge + Sync contains only about 1400 mAh of power, and can only trickle out about 650 mA of output current. The Mophie Juice Pack Air my iPhone is currently wearing only has a 1500 mAh battery in its lovely red shell.
The Gum
