mophie‘s new juice pack for the HTC One has a 2500mAh rechargeable battery that can double your battery life. The case measures 2.88″ X 6.06″ X 0.67″ and adds 5.05 ounces to the weight of your phone. You’ll be able to use the backup battery to recharge your phone with the flip of a switch on the back of the mophie case, and you’ll be able to check the battery’s charge by pressing a button to light up the LED battery meter. The juice pack recharges with the included USB cable, and you’ll even be able to charge and sync your phone as the juice pack charges, without removing the case. The juice pack for HTC One is available in Silver (ships mid-May) or Black (available now) for $99.95.