If you are going to store your trailer unplugged, then disconnect the battery with the cutoff switch. But consider removing the battery to store indoors, maybe connected to a trickle charger. I leave mine in the trailer and connected, but always plugged in so the battery never discharges. Does that answer your question?
"But, oh that magic feeling, nowhere to go." -- The Beatles
2015 Flagstaff 8528RKWS fiver
2013 Ram 2500 CTD Laramie CC SB 4WD Auto