Answer
Can the EcoFlow DELTA 3 run ResMed AirSense 11 AutoSet, no humidifier?
Runs
Runs. Draw is 7 W, within the 1,800 W continuous output. Estimated runtime on AC: about 39.6 hr, counting about 15 W of inverter draw.
Medical safety notice: Will It Run? gives general power estimates only, not medical advice. Power draw varies by model, settings, pressure, humidifier and altitude. Before relying on any battery, power station, inverter or generator for a medical device, confirm approved power sources with the device manufacturer and your doctor or equipment supplier, and test your setup before an emergency. Never change prescribed settings to extend battery life. If your therapy is life-sustaining, keep the backup your supplier provides, register with your utility's medical-needs program, and have an evacuation plan. Run generators outdoors only, at least 20 ft from windows and doors, because of carbon monoxide risk. In an emergency, call 911.
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The comparison
| EcoFlow DELTA 3 | ResMed AirSense 11 AutoSet, no humidifier | |
|---|---|---|
| Continuous output / running draw | 1,800 W | 7 W |
| Capacity / average draw | 1,024 Wh nameplate, 870 Wh usable | 7 W |
| Runtime on AC | 39.6 hr (7 W + about 15 W inverter draw) | |
| Nights on AC (8 hr) | 4.9 | |
| On DC, best case | 5.2 days, 15.5 nights with the ResMed Air11 DC/DC converter in the 12 V car port | |
| Sources | Station source | Appliance source |
How AC runtime is figured: usable Wh (nameplate × 0.85) ÷ (CPAP watts + about 15 W). The 15 W is the inverter's own draw just to stay on: BLUETTI counts about 15 W of self-consumption in its AC180 runtime formula, and an owner test measured about 17.5 W idle on a DELTA 3 Plus. Larger stations can idle higher, so test your own setup before you rely on it. DC figures skip the inverter and are a best case. Method and DC converter limits: CPAP power station guide.
More on the EcoFlow DELTA 3 · More on this machine · CPAP hub
Questions
Can the EcoFlow DELTA 3 run ResMed AirSense 11 AutoSet, no humidifier?
Runs. Draw is 7 W, within the 1,800 W continuous output. Estimated runtime on AC: about 39.6 hr, counting about 15 W of inverter draw.
How was the runtime calculated?
On AC: 1,024 Wh × 0.85 = 870 Wh usable, divided by (7 W + about 15 W inverter draw) = 39.6 hr. On DC with the ResMed Air11 DC/DC converter in the car port there is no inverter, so the best case is 870 Wh divided by 7 W = 5.2 days.
Where did the numbers come from?
US spec table: 1,024 Wh, 6 outlets, 1,800 W (surge 3,600 W), X-Boost 2,200 W, 27.6 lb, LFP, 4,000 cycles to 80%+. A sale price on the page was not recorded as a launch price. ResMed's therapy-device power table lists AirSense 11 AutoSet operation at 7 Wh and standby at 2 Wh. The operation figure is energy per hour, so the average draw is 7 W. ResMed notes the values were measured in a lab and that a local meter can differ.