Cordless drill PWM speed controllers interchangeable?

Wondering whether I can hook up one cordless drill power circuit to another cordless drill motor of equal or greater voltage.

I hooked up a 14.4 V cordless drill battery and PWM circuit (trigger) to a 36 V cordless drill motor and it seemed to work fine, probably at a lower maximum speed. Is that the only rule, make sure the power circuit voltage of the controller is no more than the original power circuit voltage for the motor?

I suppose current is another concern, that might work against the lesser voltage PWM circuit. Maybe just make sure it doesn't get hot?


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John Doe
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