For those who charge their camper battery from both the TV while driving, and also shore power via a converter (such as in the PD4045) when camping, and have a battery cutoff switch, do you wire your switch to cut off the battery from both possible sources, just the converter, or some other way? I can see the argument for either way, as the TV can be taken off line simply by unplugging the trailer cable. But someone like me might forget how I'd wired it.
Also, connecting the TV battery to the camper battery via the auxiliary wire in the cable (with 30 A fuses at either end), it appears the converter would charge the TV battery as well as the camper battery if one were at a site with shore power, and left the trailer cable plugged into the TV. Any issues with that? I recognize it's not the best thing to keep both batteries in parallel for too long (more than a few days), but, of course, they are connected in parallel for the duration of a drive, with the TV's alternator charging both. How about leaving the batteries connected overnight?
Thank you for your thoughts.
Tom