This customer recently purchased a 373 MBRB and wanted to make it more boondocking friendly. With a family traveling it can be a pain going from place to place without a generator. He decided to have one leg being fed from inverter with Battlle Born batteries supporting it.
A 5kW battery bank (4 Battle Born batteries in 2S2P) and 3000 watt inverter would allow for silent, fuel saving Air Conditioning, microwave and TV off battery at any time of day or night. The AC would run for 4+ hours.
I was able to fit three 350 watt panels on the roof for total of 1050w to help charge and offset inverter useage.
I installed a Victron Mutiplus 3,000 watt hybrid-inverter to run one side trailer from battery power. This consisted of main AC, microwave and most of the outlets in the RV. Customer opted for the onboard Color Control GX which orchestrates all of the parts of the system well. It will data log, view and control the electrical systems. This system as programmed will just work off solar, generator or shore power seamlessly.
There is redundancy for temp and voltage for the Lithium battery including the Battleborn internal BMS. If discharged completely, Shore/Solar/Generator power is supplied the batteries will get charged and the inverter will come back online. The Converter can power the 12v side of trailer and is operational but retired. The charger section of the inverter can put 70 amps into the battery from generator/shore power.