iBook will not recognise battery charger or charge battery

Thanks Konaster. The charger is OK, as is the DC-In board, so the problem is somewhere in the charge circuit on the logic board. I'm reluctant to start the soldering iron routine :-) So I was thinking: the machine works fine on battery but to keep changing batteries charged up externally is a pain. How about if somehow I could lash the output from the charger direct to the connector in the battery bay, maybe breaking apart an old battery to get the other half of the connector then wiring to that and adding other components as necessary. This eliminating the battery altogether. But can this work and how? Could be a new "product of last resort" here! Anyone want to make a partnership?

Thanks for your message. The problem is not with the battery but with the charger circuit. Despite swapping known working DC-In boards and chargers the machine will not recognise any charger presence in any way or boot up from AC power only. So I'm assuming some kind of logic board fault, although the laptop is working perfectly battery powered, with OK results from Coconut Battery for each battery I've tried. Hence my earlier musing that if you could somehow splice mains power suitably adapted direct to the battery compartment connectors you could run off AC and forget batteries, dismantling, replacement parts which may prove a waste of time etc etc and use the iBook as a static unit