iBook G3 Clamshell Battery Door - Blueberry - 922-4342
Amazon.com: Replacement for Apple iBook G4 12 iBook G3 12 M7692J A iBook G3 12 M7692LL A iBook G3 12 M7698J A iBook G3 12 M7698LL A iBook G3 12 M8520J A Battery : Electronics
Battery Technology MC-IBOOK2/L Apple iBook 12 Replacement Battery at TigerDirect.com
In processes of rebuilding ibook g3 clamshell's Battery with easily replaceable 18650 cells : r/VintageApple
Amazon.com: BTI MC-IBOOK2/14L 14.8V 4400mAh Battery for Apple iBook : Electronics