I'm building a similar system for a toy hauler and figured I'd throw my 2cents in.
I was wanting a 12v system and having everything run off it and possibly tying it into the truck's charging system. but the issue I didn't like was the multiplus being able to handle a spike of 6000W which is 450A!!! that requires beefy cables and BMS. 6000W is a realistic spike if the AC and microwave are running and the air compressor kicks on because someone forgot to turn it off.
so I decided to go with a 24v system and just having a single deep cycle battery to handle the 12v loads. that way a 150-200A bms could handle it. for me 12v loads are winch and landing gear and some lights. a single battery should be able to handle those. the multiplus has a built in 4a trickle charger for 12v batteries.
for solar I'm starting with 6 250W panels and might install 8 depending on what the actual output is. that way I only need one 50A SCC.
the LLT bms is able to talk to the victron system and share voltage, current, etc because there's already a shunt in the bms. https://community.victronenergy.com...nusos-driver-for-serial-connected-bms-av.html
depending on which victron controller you get you can wire in tank level sensors, gen auto start, etc
I was wanting a 12v system and having everything run off it and possibly tying it into the truck's charging system. but the issue I didn't like was the multiplus being able to handle a spike of 6000W which is 450A!!! that requires beefy cables and BMS. 6000W is a realistic spike if the AC and microwave are running and the air compressor kicks on because someone forgot to turn it off.
so I decided to go with a 24v system and just having a single deep cycle battery to handle the 12v loads. that way a 150-200A bms could handle it. for me 12v loads are winch and landing gear and some lights. a single battery should be able to handle those. the multiplus has a built in 4a trickle charger for 12v batteries.
for solar I'm starting with 6 250W panels and might install 8 depending on what the actual output is. that way I only need one 50A SCC.
the LLT bms is able to talk to the victron system and share voltage, current, etc because there's already a shunt in the bms. https://community.victronenergy.com...nusos-driver-for-serial-connected-bms-av.html
depending on which victron controller you get you can wire in tank level sensors, gen auto start, etc
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