$25 dollar ebay 2001 PowerBook G4 Titanium. Advertised as not powering on, reset the pram battery and it's good as new. No chipping and hinge damage. Near mint condition. : r/VintageApple
Apple Battery PowerBook G4 A1001 PRAM CMOS BIOS Battery 820-1343-A
Guess who managed to score an original PowerBook G4 titanium battery in mint working condition with only 41 cycles on for just £10. An accidental miracle. Facebook market place to the rescue! :
Q. My Macintosh loses its settings and date? | CanadaRAM: Memory and Computer Q&A
Apple Powerbook Battery - G4 Titanium 400/500 PRAM - 922-4361