Thanks for that. The charger on the old iBook doesn't seem to be making a good contact somewhere (not sure if it's the plug or the socket) and the battery only lasts for a few minutes. I was hoping that in an emergency I might be able to plug my PB charger in without blowing the iBook up, hoping that it might make a better connection.
It does look like the poor iBook's time on this earth is drawing to a close though
Still running Tiger pretty well with only 384Mb RAM!