The alternative power system came with the property, right now the practical side is that you have refrigeration when/if the grid power goes out, which is a rare occasion now but frequent in the past . I am thinking of the future for when the battery bank gets to it's end of lifecycle, replacement cost will be about $4,000.
I saw these and that is why I asked the question about step down transformer or power supply. This looks like the way to go, more options and cheaper than alternatives. This is a "spare" refrigerator used for overflow and drinks.
Ok that puts it in perspective. This fridge is more sophisticated than your situation requires. Majority of off grid uses propane appliances which cost much less. Since you are not relying on the appliance for everyday off grid use, get rid of it. If battery pack is worth $4k I shudder to think what it might cost when nuts and bolts side goes bad. Sell it to someone that has no option other than solar or wind power. If it gives you peace of mind knowing you could have a fridge in unlikely event grid goes down for 6 months, buy a propane absorption for a fraction what a rig like this does.
