NewerTech® : Batteries : PRAM Battery for PowerBook® G4 17-inch Aluminum 1.5GHz – 1.67GHz Systems
Teardown: Apple PowerBook G4: How to open Disassembly battery without destroying it " Sony Cells" - YouTube
Laptop Rechargeable Battery For Apple Powerbook G4 12" Notebook Battery Pack 11.1v 5200mah - Buy Apple Laptop Battery,Powerbook G4 Battery,Laptop Battery For Apple Product on Alibaba.com
Rebuilding a PowerBook G4 Battery « Keith's Electronics Blog
M8984 M9324 Original Battery for A1022 A1079 Apple PowerBook G4 12 inches - WIT Computers