A 48-hour refrigerator backup plan
Two days of power is a bigger battery. A full freezer staying cold with the door shut is a different question. One does not prove the other.
A refrigerator that is opened, or a freezer that must keep running because the room is hot, is an electrical problem. The closed-door hold time does not apply once you are relying on the compressor. Food rules still come from the official outage guidance, not from watt-hours.
Illustration: 500 kWh per year for 48 hours
Minimum planning capacity is 4,209 Wh. No in-stock product in our catalog meets your full requested runtime right now. These preorder options would: The 4,096 Wh bundles are still short of this target. Out-of-stock models are not treated as a match. A watt-hour fit is not proof the food stayed safe.
A lower average draw can fit a longer duration in the same box. That has to be your appliance’s number. Open the calculator with 48 hours selected. Chest freezers often need their own label rather than a refrigerator’s kWh; see chest freezer backup.