The numbers
| DELTA 2 Max | |
|---|---|
| Battery | 2,048 WhLiFePO4 |
| Output | 2,400 W4,800 W surge |
| Starts it? | Yesneeds about 1,200 W |
| Runs it? | Yesdraws up to 250 W |
| A typical day's use | 21 hours to 1.7 days |
| Nonstop at full power | about 7 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.
Running it every day, off grid? How much power a refrigerator uses sizes the solar for it.
Other questions like this
Sources
- EcoFlow DELTA 2 Max user manual (PDF) the maker's specs
- 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 Spotted something out of date?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.