Almost every machine seems to use a different sized plug, so it seems sensible to make up new battery assemblies locally using the old wires.
Because of the dangers of soldering button cells, I was looking at the conductive glue types on ebay.
It seems there are silver based ones and carbon based types.
Is there any preference for either type? They seem to have huge drying times eg 12 hours. Would a big tube be better, or would it go off inside the syringe/tube?