I was looking for this exactly. A mountable weatherproof maintenance charger for a hunting fishing truck. Now despite what some people say, this charger is awesome. If you have a junk battery, it's not going to work right. But I know my battery was good, and it charged it up actually quite quickly, and now I never need to wonder if the battery is drained. I highly recommend this product, and I've been a professional mechanic for 23 years.
Rating: [5 of 5 Stars!]