Question. If the coach had been plugged into shore power for a week , how much battery life would you have then ? Just over night , like from the gen set recharge? Was the battery life any better when the batteries were installed?
Fridge control board and activation of the propane solenoids for the burner to run , is a 12v draw, but your 2 batteries should do way better that that .
Have you had them tested? One bad cell can draw down both batteries in a hurry, and new doesn't mean good. A battery can fail any time.
99DSDP 3884, Freightliner, XC, CAT 3126B, 300 HP /ALLISON 3060
2000 Caravan toad, Remco & Blue Ox.