A dead cell phone battery can ruin anyone’s day, but If you are an iPhone user you are now in luck. The Mophie Juice Pack is an elegantly designed battery pack that houses your iPhone and gives it that extra boost to make it through those long days in the field. This extra boost gives you up to 350 hours of standby time, 6 hours of talk time, 6 hours of surfing the net, or 28 hours of your favorite tunes. Best of all, it can be yours for under a hundred bucks.