Mophie today announced the Juice Pack Plus, a new 2100mAh battery case for the iPhone 5. The case is the third that the company has released for the iPhone 5, though this new $120 case has the largest battery of the three. The $80 Juice Pack Helium has a 1500mAh battery, and the $100 Juice Pack Air has a 1700mAh battery. The mophie juice pack plus is made for the user who puts their iPhone 5 through the paces morning to night, maxing out features, apps, video, email and web browsing while on-the-go. The