Question about Volta Prime and boondocking

[ABrayshaw]

We are long-time travel trailer campers who are thinking about moving up to a Class B. We're zeroing in on the Winnebago Boldt. My primary focus is on the capability of the electrical system for boondocking, which is how we spend the majority of our camping days.
The Volta Prime3 system has really captured my attention. I've watched all the videos posted on the Lichtsinn website, YouTube and elsewhere, which are pretty informative, but they seem to mostly focus on the Volta's ability to provide 30 amp AC service off the 3000 watt inverter system. (I'm familiar with inverter systems, as I have one in our house as a backup to keep my heating system operable during a power failure.)
BUT -- while having AC power for the induction cooktop, AC, etc. is fine, what about long-term 12V DC output for the refrigerator, lights and water pump? I'm presuming the 48 volt battery system powers all those 12V things, but I've not seen nor heard anything that states how long the battery system is likely to allow us to boondock before recharging is needed.
Can anyone give a better explanation of how this Volta system is used for powering things during boondocking?
TIA