I live in my trailer full time, going on two years. I've already replaced the converter once, it started making noise and then eventually wasn't charging so good. Now I've noticed the new converter seems to be running more than it did when I put it in. I'm also running 12V tank heaters now, so I understand that could be part of the reason. My question - can I put a battery charger to the batteries to help take some of the work load off the converter? A battery charger is a lot cheaper than a converter. I would look for something with an auto on / off feature. I have a little one, called a battery tender for my motorcyle that I just leave plugged in during the winter and the battery stays charged, but I think that might be a little lite duty for the trailer.