My 2001 PowerBook G4 (Gigabit Ethernet) is still going strong (the battery however is dead :-( ) : r/VintageApple
Rebuilding a PowerBook G4 Battery « Keith's Electronics Blog
Laptop Battery for Apple PowerBook G4 Series, A1078,616-0115 616-0119 616-0132 616-0133
Batteria per PowerBook G4 17" - BuyDifferent - Gli esperti del mondo Apple
PowerBook G4 Titanium DVI Battery Replacement - iFixit Repair Guide
Apple PowerBook G4 15" Replacement Battery - M8244 - High quality cheap affordable laptop parts including laptop battery, laptop AC adapter, laptop keyboard- Lapbitz
Exceptional Powerbook G4 Battery At Amazing Deals - Alibaba.com
Batteria Notebook Apple PowerBook G4 15" A1045 A1078 A1148 M9325