The numbers

SOLIX F3800
Battery3,840 WhLiFePO4
Output6,000 W9,000 W surge, 120V and 240V
Starts it?Yesneeds about 1,200 W
Runs it?Yesdraws up to 250 W
A typical day's use1.6–3.3 days
Nonstop at full powerabout 13 hours

On a full charge, with no other loads. A refrigerator uses 1.0–2.0 kWh a day and draws 100–250 W while the compressor runs; about 85% of the battery reaches the outlet after the inverter's losses. It cycles on and off, so it averages far less than its label. Newer Energy Star models sit at the low end.

Tip: Keep it full and closed during outages; it holds cold for hours.

Make it last longer

Folding solar panels refill it on sunny days. Add the rest of what you would run to see the whole picture.

Add your other appliances

Running it every day, off grid? How much power a refrigerator uses sizes the solar for it.

Other questions like this

Sources

  1. Anker SOLIX F3800 product page the maker's specs
  2. How much power a refrigerator uses US Department of Energy estimates, nameplate ratings and owner measurements

Runtimes are calculated from these numbers, not measured. Your refrigerator's label or a plug-in meter gives your exact draw. Spotted something out of date? Tell me.