It’s taken nearly five months, but Mophie has finally announced its battery case for the iPhone 5. The Mophie Juice Pack Helium for iPhone 5 contains a 1500mAh battery in a case that’s 13% slimmer than its predecessor. The pack promises to give six to seven more hours of battery life to the iPhone 5 in normal use cases. The Juice Pack Helium costs $80 while supplies last, and shipments start going out on Valentine’s Day.