Grant, Thanks for the recommendation of Battery MINDer products.
Jim, thanks for your input. I did find a transformer type wall wart with
same specs as his charger (12V 750 ma). I was going to swap it out, but
noticed that his "bad" charger actually has some smarts in it that cut
the charge off once the battery is fully charged. So it isn't a simple
trickle charger. I can't honestly tell him I am giving him the same
functionality if I splice in my power supply.
I will see if I can find a battery minder locally and try it as a
replacement. Will tell the store owner my requirement that it be RFI
quiet and be sure they will take it back if it is defective.
Case closed for now.
73 Randy K0EU
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