Other World Computing (OWC) and Newer Technology today announced they have added to their line of NuPower PowerBook replacement batteries by introducing what they say is the highest capacity battery every made available for Apple’s PowerBook G4 15-inch Titanium models. The newest addition to the NewerTech NuPower Lithium-Ion battery family is rated at 74 Watt Hours, providing up to 48% more run time capacity than Apple factory-shipped batteries. The new battery replacement sells for US$159.99 and comes with a one-year NewerTech warranty.