If your fridge is propane/120 volt the only time it uses 12 volt is to light the burner.
If you have a residential fridge then the inverter will draw from the battery to power the fridge with 120 volts if you're not on shore power or generator .
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2015 Ford F350 DRW 6.7 Diesel XL
2020 Avalanche 313 RS
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