In 2002, I purchased Optima batteries Blue Top (Deep Cycle Marine) batteries for my Alfa fifth wheel. This has proven to be a great investment as they have lasted for 8 years now without any problems. Prior to this, I was purchasing new batteries for my rig about every two years. I also purchased an Optima red top for my tow vehicle in 2006 and have also had good luck with it as well. While I don’t get 8 years out of that one, it lasts significantly longer than the 1 year I was getting out of other batteries in the hot, Arizona heat. These batteries emit no gas and need no water maintenance so they are ideal for an RV. The next time you need a new battery in either your RV or tow vehicle, I definitely recommend that you consider the Optima.