NewerTech and Other World Computing (OWC) have announced the highest capacity battery ever made available for the 15-inch Aluminum PowerBook. Rated at 55.5 watt hours, which provides almost 16 percent more run-time capacity than Apple factory-shipped batteries, these NuPower batteries are designed, engineered, and manufactured in the US.

"NuPower batteries are a total win-win-win," said Larry O'Connor, CEO. "More run time between charges sets you free, the longer life span of NewerTech NuPower batteries provides both economical benefits as well as those for the environment"

The new 55.5 Watt Hour PowerBook G4 Aluminum 15-inch batteries retail for only $140 and come with a one-year NewerTech warranty. A 53.3 Watt Hour model also is available for $130. These batteries are compatible with all Aluminum 15-inch G4 PowerBook models (1.0 ~ 1.67 GHz).