I do not know tha exact amount of power but I would guess that it would take less that a light being on for 10 minutes or so. Takes very little power I would say. Doubt you would ever run the battey(ies) down by usisng it. Good Luck
Full Timer. 97 GMC 3/4 T6.5 extendacab. 30' Terry w/slide. Do most of my own repairs. 12yrs on the road.