[MandK]

If your coach is not a legacy and no solar, besides the on/off switch for the inverter in the battery compartment, there is a remote on/off switch in the cabinet above the coffee bar.
Batteries were at the discretion of the dealer, A 3121 has a residential refrigerator and the 2021 model had 4 other inverted outlets beside the fridge outlet (pop up outlet to the right of the stove, Living area TV, theater seats and the outlet to the left of the dresser in the bedroom.) Dealers we’re supposed to furnish two batteries to go along with the 2000w inverter. My dealer supplied two 65 amp hr dual purpose marine batteries (series 24). Woefully inadequate except if plugged in to shore power every night. No telling what is in yours.