Mophie today announced the iPhone 5 version of the Juice Pack Air, which offers more battery life than the recently announced Juice Pack Helium for the iPhone 5. The ideal case for the everyday 9–5er and for those whose day doesn't always end when they leave the office. Lighter and thinner than previous generations, but packed with more power to make sure your phone can keep up with your busy lifestyle.While the Helium comes equipped with a 1500mAh battery, the Air offers a 1700mAh battery, which promises to double the iPhone 5's battery life, adding an additional eight hours of LTE use. The Helium, in contrast