Other World Computing and Newer Technology announced the immediate availability of the latest NuPower battery for the 15-inch Titanium PowerBook G4 on Tuesday. The battery is rated at 74 Watt Hours, offering up to 48 percent longer run times than Appleis original battery. It is compatible with all Titanium PowerBooks from the 400MHz up through to 1GHz model. The Titanium PowerBook G4 high capacity battery is available at the MacSales Web site with a one year warranty, and is priced at US$159.