Looking for the best iPhone battery case? We compare Mophie vs Newdery on size, capacity, and value to help you choose the ...

The tiny Tau 2 is a great and affordable back-up battery that can squeeze out enough juice to recharge the iPhone to nearly a third of its full potential while weighing next to nothing and taking up ...

The slim Twelve South PowerCapsule MagSafe power bank adds hours of battery life to your iPhone. We did hands-on testing.