We also keep ours plugged in all the time while at home. It keeps the batt charged, and no problems have occurred to date. As for the batt quick disconnect, we use one that mounts on one of the batt posts between cable and post, with a thumbscrew to disconnect. This is the same one that many antique car owners use while their baby is is storage for the winter months.
2003 Ford F-350 V-10 Crew Cab 4WD Long Bed
2004 Jayco Designer Medallion 29 RLTS 5th wheel
Bill, Gayle, and Mindi (dachshund)
Retired at last !
Nothing is foolproof to a sufficiently talented fool.