Apple today released Battery Update 1.1, which enhances the performance of a battery to ensure that full capacity is available for a PowerBook or iBook. The Battery Update supports the following products: iBook (Dual USB), iBook (Late 2001), iBook (Opaque 16 VRAM), iBook (32 VRAM), iBook G4 (12-inch), PowerBook G4 (12-inch), PowerBook G4 (12-inch DVI), PowerBook G4 (15-inch FW 800), PowerBook G4 (17-inch), and PowerBook G4 (17-inch 1.33GHz). The update is available via the Mac OS X Software Update preference pane.