4000!Whew!I'm sure it don't work hard!I wonder if a larger capacity winch will draw on a battery a whole lot harder?Yours 12 volt?I even considered buying a 120 volt winch and running it off the generator.Actually I thought about making one out of an old starter motor,like alot of old wreck trucks have,but figured that it would end up being more of a novelty,than a conveinence.Trying to save a buck!!