question

The inverters do use that +-20w standy.

I would say if you already have the inverter running 24/7 then I would get regular fridge and bigger batteries.

However the DC fridges from Snowmaster, National Luna, Waco tend to have a lot more insulation than a regular fridge and also tend to use a lot less energy. 82L Snowmaster in 30C ambient temps could run the whole day off 400wh. I would also get a chest fridge if you can as they don't lose as much cooling when opened. If it is stand up fridge I think they will be a lot closer in energy usage DC vs AC fridges.

By LiPo I really hope you mean LifePo4/LFP. LiPo batteries like the type found in RC cars, are not great for long term use and tend to catch fire when on charge for long periods of time.

One thing to consider is being able to run the load on the generator if the inverter fails.

I looked at this extensively a couple of years ago, and came to the conclusion that for myself I was better off getting an ac 2 door fridge/freezer over a dc f/f.

Purchase price- a decent ac f/f is 1/4 the cost of an equivalent capacity decent dc f/f. The cost savings can be used to increase the capacity of the battery/solar array/inverter.

Energy efficiency- ac f/f can have good efficiency when proper evaluation is used. You have to compare same volume ac and dc f/f's and their power consumption. A dc f/f that uses 55Ah/day (12v) uses the same energy as an ac f/f that is rated at 265kwh a year.

Model range and features- there is a much wider # of ac powered f/f to choose from, compared to dc models. ac f/f can have more useful features, ever seen a frost free dc f/f? Inverter drive f/f?

Volume matters- I managed to get an ac f/f that holds 2.5 times the food as my equivalent dc powered f/f, while using less power overall. That means I only have to shop (move) once a month, rather than every 2 weeks. Fuel_costs_money.

Positive points for dc powered f/f..

Dc f/f will have better tie down points, and door locks.

Dc f/f will be rated for mobile use. Ac f/f might not have warranty if used in a mobile setup.

After 2 1/4 years how did my ac powered f/f perform?

Energy efficiency- the f/f did actually better than its 265kwh/year figures. The power meter that records the inverters total output power reads 547kwh for the 27 month period. That figure includes all ac powered cooking (kettle/toaster/hotplate/skillet/air fryer/clothes washer/power tools etc). My average yearly ac power consumption is approx 243kwh!

Cooling performance- At temperatures of 45c (113f) my ice cream was solid. At temps over 40c the compressor might not actually cycle, drawing a constant 65w ac. The compressor seems to have 3 power levels/speeds (??), adapting power use between 15c - 35c.

Some further thoughts..

Energy that falls out of the sky is free!- You just need to harvest (panels) and store (battery) it.

LPG/propane is expensive. I am onto my third 20lb bottle, and only use gas when it is cold, or energy levels are low (or bad prolonged weather is predicted).

Gasoline/petrol is expensive- generators are noisy/require maintenance. I have used maybe liters in the 27 months.