"Tabby" wrote in message
...

The simplest and cheapest workaround for such problems is to buy on
eBay a "spares or repairs" machine that uses the same battery and hope
the charger circuitry still works. More elegantly, you can get
standalone chargers for some batteries, but the cost will be about the
same.

Chris

I reckon a resistor from power pack out to battery + fitted inside the
lappie would be simpler & cheaper. Charging would be very slow, but
quite workable if its not used a lot on battery.

Even simpler would be to buy a rechargable battery of the same or close
voltage as the AC supply and fit it with the proper connector to plug the
battery into the AC charger slot. The battery could be recharged manually.