I dont like leaving my coach connected all of the time.
I feel like something strange will go wrong and either the battery over charging or not charge at all and be 100% dead. Or some electic surge will fry everything, Fire, lightning storm etc.
I just check on mine every couple of week (inside storage facilty) and I try to drive her ever 2 - 4 weeks.
With my AGM's they are like 90 % charged so its never an issuce. My old Factory LA batteries would be dead in 2 weeks.
2017 Axis / 25.4: Big Foot Levelers, Aims 1200 Watt inverter, Ceramic Window Tint, Full River AGM 6V batteries, Front Hellwig Sway bar / Rear Track Arm, Safe T Plus Steering Stabilizer, PD 4655 converter, Hard Wired Surge Guard, WEboost + WiFi Ranger, LED Headlights/Driving lights, TPMS, Surge tank, Tornado flush, Viair Compressor