HiKim.
A lot also depends on what kind and Brand of Converter/Charger that you have in your Motorhome? Check it out and find out if it is a good Multi-Stage, with 3 or 4 stages of charging and see if your Converter/Charger reaches at least 14.4 volts. Low Water Levels and Boiling the Batter Bank is the fastest way to ruin Battries very quickly, also dropping below the 50% Level to many times will greatly shorten your Batteys Life Span.
Good Luck Happy Travels. Dan & Jill & our two small "YORKIE KID'S who love to travel as much as we do