subject: Extending Your Smartphone Battery [print this page] Ten hours is a lot, but sometimes you just can't afford to stop and charge. Those times justify the Kensington PowerBack battery case. It gives 5 hours of juice, bumping your iPad up into a 15-hour power monster. $129.99 is a steep price to pay, but you'll be glad you have that extra 50% when you end up stranded in a foreign airport with no plug adapter.
