I am building a system for my RV while building a home so it will be moved to the off-grid him in about a year. So far I have 2 12V 100 AH Battleborn Batteries, 8 - 335 Watt Solar Panels from Rich Solar and a Victron MPPT Tr VE. Can 150V 100 amp Solar Charge Controller. My RV has a 50 AMP service with 2 AC units, however, I have a generator to run those when needed. The RV came with a basic inverter to run the fridge and the outless unless run when plugged into shore power or a generator. I am wanting to add an inverter to run these from the solar panels directly while also charging the 2 batteries that can be used when the sun goes down for small loads. Is this something the Multiplus II can handle and it can be programmed to only deliver the max charge rate of the batteries or do I need something else. I want to avoid spending a lot on additional batteries. I can provide more details if needed, any help would be greatly appreciated. Thanks!
way too much wattage for a 12volt system.
what you are looking for here is known as "hybrid inverter charger with mppt"
we use these for both on and off grid.
typical units have
1. MPPT to control panels
2. Charger to charge batteries
3. Grid input to supply loads and also charge
4. inverter to provide power in the event of grid failure
5. 120 or 240V split phase outputs ( useful for 50A RV )
they may be programmed for off grid and supply power directly from panels or to/from batteries as required. plug a generator into the grid side and you can supply and charge at the same time.
most if not all are 48 volts as that's the standard for off grid.
also they don't come in small wattages, 4000 W and up is the norm
price starts around $1200 to $1500 and up for the small ones.
basically you plug everything into it, panels,batteries,generator and it will supply power to your loads
from any of those sources and can be programmed to charge when you have a surplus.
when programmed for solar priority, the panels power your loads and charge if you have a surplus, else power is drawn from battery, as will happen on partial cloudy days.