yes in propane compartment then just to the left i have two more platforms for 4 more batteries in another compartment.
Your onboard charger should be inside your breaker/fuse box. I left mine alone and upgraded the output cable from it to the new battery bank.
I have tweaked the diagram a little to add a second set of buss bars and a Victron bluetooth shunt right after the batteries to watch battery level and left the other shunts to monitor each charger level. I also added two more 100AH batteries for a total of 500AH with room to add three more if...
"solar generator" is such a BS name for a battery.
I would up grade current batteries to LiFePo4, add a second large amperage changer (125A ish) and run your onboard generator 1 hour a day to top them off.
When you add solar panels on the roof all you get is extra holes, wiring in cabinets...
Never have i ever been too concerned with fuel prices. Cant do chit about it and i want to go where i want to go when i want to go.
Now all this saying i have had a company truck and gas card for 30 years now. So what little i use on the weekends dont matter to me.