As I interpret his post, the separator is still engaged because the voltage is still at or above the cutoff point. Therefor, it is drawing 0.75 amps. This is why I suggest he turn on the headlights, drawing voltage down and check that the separator disengages.... 13 milliamps * 12 volts = 0.156 watts. You shouldn't be able to feel that feeble output.
Something is probably wrong.