I take mine off the TT and take it home. I keep it in the garage on a float charger, but I use it for more than just an RV battery. I have an electric winch for launching my RC gliders. Even without that I'd take it home so I can keep an eye on the water levels and keep the float charger on it. It's over 4 years old and still going strong.
Jack and Dee Dee Weatherford, Texas
2014 Ram 2500 Crew Cab 4X4 w/CTD 6.7
2016 Jayco White Hawk 28DSBH Travel Trailer