Best thing you can do with a battery used for a camper is to keep it on a trickle type charger (battery tender) when it's not in use. When my camping trip is done, I remove the battery from its tray, place it on my bench, and attach the battery tender to it.
Make sure you buy a deep cycle battery to replace this one if it will not charge.
2015 Jayco Jay Featherlight SLX16XRB (TT)
2007 Ford F150 Tow Vehicle (TV)