Aisle5Deals offers the Mophie Juice Pack Air Charging Case for iPhone 4/4S in Red, model no. 1148_JPA-IP4-P-RED, for $45.99 plus $3.50 for shipping. That's the lowest total price we could find by $20, although we saw it in white for $2 less two weeks ago, since expired. This 1,500mAh battery pack provides up to 6 hours of talk time or up to 5 hours on the Internet. It features LED indicators of battery strength. Deal ends December 28.