If anyone is interested, I have found a device that will extend your batteries life by as much as 2 or 3 times. It is called PowerPluse.

PulseTech PowerPulse is a relatively new electronic device that pulses charging current in a manner that slows down and even reverses sulfation on battery plates. This technology was orginally developed for the military. It extends the life of wet or Gel batteries by as much as 2 or 3 times the normal life. I am going to install them on my coach this week.