[dtengineering]

I'd just hook it up as a custom circuit.

Consider... you've got all sorts of 12V power available on the power distribution board. Throw a 20A breaker into one of those ports and get a "car charger" for a cell phone and you're done.

Consider that the 12V from your robot isn't any different from the 12V from your car's cigarette lighter. (Err... sorry... that's "power port" these days, thank goodness.)

Jason