What will the EcoFlow DELTA 3 Max run?
The EcoFlow DELTA 3 Max stores 2,048Wh with 2,400W of output (4,800W surge). Running one thing at a time, that's about 17 to 36 hours of a refrigerator, about 2 to 4 days of a CPAP with the humidifier off and about 2 to 3 days of Wi-Fi.
Over 2 kWh and 2,400 W for under the price of most 1.5 kWh units at EcoFlow's store price: enough for a fridge, a freezer and essentials through a long outage. At about 45 lb it's a carry, not a grab.
One appliance at a time
| Running just this | Runs it for | Runs it? |
|---|---|---|
| Refrigerator | 17 to 36 hours | Yes |
| Freezer (chest or upright) | 19 to 47 hours | Yes |
| CPAP (blower only: humidifier and heated tube off) | 2 to 4 days | Yes |
| CPAP with heated humidifier (and heated tube) | 20 to 51 hours | Yes |
| Home oxygen concentrator | 4.5 to 5.5 hours | Yes |
| Modem and Wi-Fi router | 2 to 3 days | Yes |
| Laptop (plugged in, in use) | 20 to 39 hours | Yes |
| TV (32 to 65-inch LED) | 11 to 39 hours | Yes |
| LED light bulb (60W equivalent, each) | about 3 days | Yes |
| Gas furnace blower (1/3 to 1/2 HP) | 2.5 to 3.5 hours | Yes |
| Window air conditioner (10,000 BTU) | 1.5 to 2.5 hours | Yes |
| Microwave | 1 to 2.5 hours | Yes |
| Coffee maker | 1.5 to 2 hours | Yes |
| Electric space heater | 1 to 3 hours | Yes |
| Sump pump (1/2 HP) | about 1.5 hours | Yes |
A few things together
| Running together | Runs them for | Runs it? |
|---|---|---|
| Refrigerator, Wi-Fi and four LED bulbs | 10 to 19 hours | Yes |
| Refrigerator, freezer and Wi-Fi | 8.5 to 20 hours | Yes |
| CPAP (humidifier off) and one LED bulb | 39 to 73 hours | Yes |
| Wi-Fi, a laptop and two LED bulbs | 13 to 24 hours | Yes |
Runtime: 2,048Wh × 90% usable × 85% inverter efficiency ÷ (the average draw + about 10W the station uses itself), from Energy Star figures and makers' manuals. "Runs it?" checks its output and surge rating against the cautious running and starting figures on generator makers' and DTE Energy's charts. Plan on the low end. Your own list: the power station calculator.
Questions
Can the EcoFlow DELTA 3 Max run a refrigerator?
Yes. It runs one for about 17 to 36 hours on its own, and its output and surge rating cover the cautious figures on generator makers' charts.
How long will the EcoFlow DELTA 3 Max run a CPAP?
About 2 to 4 days with the humidifier and heated tube off, or about 20 to 51 hours with them on, running nothing else. Running it from the 12V outlet through the CPAP maker's own converter avoids the inverter's losses, so it lasts longer than these figures.
Can the EcoFlow DELTA 3 Max run a space heater?
Only briefly: a space heater on high draws up to about 1,500 watts, so it lasts about 1 to 3 hours. See how to stay warm without power for what works better.