Numbers:
2 Magnum 4000W 24V Inverters with remotes and leads: $2000 each, $4000 for the pair.
6 Lifeline 4D Batteries: Shipped cost $3500.
Total: $7500 for the current setup.
Alternative if you boondock infrequently:
1 Magnum 4024 Inverter: $2000.
4 Lifeline 4D Batteries: $2500.
Total: $4500.
That’s a $3000 saving, which could be better spent elsewhere.
Currently, with 2 inverters, you have 5000W. Switching to 1 4024 Magnum would reduce this by 1000W, but it would still provide almost twice the power needed for the fridge, microwave, outlets, and TV.
Question for the math:
How long will a fridge, pulling about 7-8 amps when the compressor runs, last on 4 fully charged 4D Lifeline batteries before they drop to around 12 volts?
If it lasts about 8 hours, that’s acceptable. Plus, you’d save $3000 and maintain the option to restore the bus to its original configuration later, with minimal reduction in capabilities.
Additional question:
How long would the fridge run on 2 larger Lifeline 8D batteries with the inverter? Someone help with the math!