Just Mobile (http://www.xtand.net/) has launched the Just Mobile Gum Max, an US$109.95 back-up battery for the iPad and iPad 2.
With 10,400mAh capacity, the aluminium clad Gum Max can fully recharge an iPad and still have juice to spare, according to the folks at Just Mobile. Its USB output allows you to charge multiple smartphones, too.
Eight LED power indicators help you keep track of Gum Max’s remaining power. You can recharge from a standard USB port.