If you like your iPhone cases a little more rugged for the added protection, and always wished that they could double as a battery pack as well, this new mophie case should be right up your alley. Called the mophie juice pack PRO, this rather massive case comes loaded with a honking battery (2500 mAh) that will be able to provide an extra 150% more power to your phone. Its Otterbox like exterior not only provides drop/impact/shock protection, but it’s also water resistant and dust proof. And like other juice pack cases, this one’s equipped with aÂ standby switch, so you get to decide when the iPhone 4/4S actually gets charged. TheÂ mophie juice pack PRO is available now – black only – on mophie.comÂ for $129. More images and info after the break.