Så här står det i manualen angående att byta batteri:
If your battery runs low while you are working, you can put your PowerBook to sleep and replace the battery with a charged one. The internal backup battery provides enough power to maintain the contents of RAM for up to three minutes while you change the battery.
Men också så här:
Removing and Replacing the Battery
To remove the battery:
• Shut down your PowerBook. Turn it over and locate the battery latch. Use a coin to turn the latch one quarter turn clockwise to unlock the battery, and gently remove it.
Ingen av alternativen verkar ta hänsyn till om du har strömsladden ikopplad.
/Mattias