Been surfing the net and a quick search here. Tons of opinions and electrical theory on the web. Some good stuff here but not a lot. So,............. Looking for real world experience with running a winch on a car trailer with a stand alone battery (not hooked to tow vehicle's charging system). I may eventually spend the money to make a better set up but, for now, I need to get to hauling JEEPs. The winch is believed to be no more than a 4500 lb MileMarker. I just need to be able to winch a V6 cj5 with a hardtop up onto the trailer, another couple of similar cj5s, and a truck. Not all the same day so, I'll time to recharge a battery in between vehicles. Will a stand alone deep cycle marine battery mounted beside the winch allow me to load a jeep onto the trailer? How long will the battery last? Let's assume a rolling jeep on basically level ground, up the trailer ramps. I've read here that some of you do this and have no issues. Hoping for the same result. I've already spent more on making this trailer operational than I had planned and am behind schedule. Thanks gents.