updated 04:35 pm EST, Tue February 10, 2009
Mophie Juice Pack Air
Accessory maker Mophie has announced the Juice Pack air, a revised version of its earlier battery pack for the iPhone 3G. Both Juice Packs latch onto the back of an iPhone, supplying extra power without dangling any cords or protrusions off of the dock connector. The batteries extend operational time by several hours, eliminating the need to recharge as frequently or avoid using functions to conserve energy.
The Air concentrates on extreme thinness, and is integrated into a hard-shell case that protects an iPhone. Its 1200mAh battery is claimed to almost double an iPhone's usable time, while a passthrough USB port allows the pack to remain connected while syncing or recharging. The Air will ship sometime in the spring, at a cost of $80. Black, white and purple versions will be available.