What if I just set the little switch on the Betz board to the down/right/off position? Then BATT is not connected to ON which means that the voltage regulator does not have any input voltage at all. Would that also suffice do you think?
Give it a go and see. The WT32i will be fine, but I had once had a similar situation with a board that had a "dangling regulator" on it, and the regulator got rather warm, sucking a LOT of current, somehow, for some reason. Dunno why.
So just check to see if the regulator gets warm or not.
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