Mophie announced its largest battery case compatible with the iPhone 4 and 4S -- the Juice Pack Pro. The case has been tested against military specification MIL-STD 810G, and boasts a 2,500 mAh capacity lithium-ion polymer battery. The polycarbonate and silicone case increases the dimensions of the iPhone to 5.26 inches long, 2.78 inches wide, and 1.02 inches thick -- more than three times as thick as a stock iPhone 4. All models of iPhone 4 and 4S on any carrier are compatible with the case.
