CPAP runtime · EcoFlow DELTA 2 Max
How Long Will an EcoFlow DELTA 2 Max Run a CPAP?
About 9.9 nights of 8 hours for an AirSense 10 with humidifier (22 W), by our math: 2,048 Wh × 0.85 ÷ 22 W. Across the cases below: 6.4 nights of 8 hours to 31.1 nights of 8 hours.
| Spec | EcoFlow DELTA 2 Max |
|---|---|
| Battery | 2,048 Wh (maker spec) |
| Usable (× 0.85) | 1,741 Wh |
| Output / surge | 2,400 W / 4,800 W |
| Own draw | not listed |
| Solar input | 1,000 W |
| Price | $1,049 (Oct 24) at EcoFlow |
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CPAP hours on the DELTA 2 Max
| Case | Watts | On the DELTA 2 Max |
|---|---|---|
| AirSense 10 without humidifier (ResMed) | 7 W | 31.1 nights of 8 hours |
| AirSense 10 with humidifier (ResMed) | 22 W | 9.9 nights of 8 hours |
| AirSense 10 with humidifier and heated tube (ResMed) | 34 W | 6.4 nights of 8 hours |
Wh × 0.85 ÷ (watts + the station’s own draw, where the maker lists it).
ResMed measured these for the AirSense 10; higher pressure or humidity draws more. A DC cord from the CPAP maker skips the inverter and lasts longer.
Keeping it going with solar
A night with an AirSense 10 with humidifier uses about 176 Wh, about 207 Wh from the battery. At the DELTA 2 Max’s 1,000 W solar input and our 75% assumption, that takes about 0.3 hours of strong sun to put back; a full charge from empty takes about 2.7 hours. See solar recharge time.
Follow your doctor’s and the CPAP maker’s advice on backup power.
CPAP on similar stations
| Station | Capacity | AirSense 10 with humidifier | Price |
|---|---|---|---|
| EcoFlow DELTA 3 Max Plus | 2,048 Wh | 9.9 nights of 8 hours | $1,199 |
| Anker SOLIX C2000 Gen 2 | 2,048 Wh | 7.0 nights of 8 hours | $899.99 (Oct 24) |
| BLUETTI AC200L | 2,048 Wh | 6.4 nights of 8 hours | $899 |
| Jackery Explorer 2000 v2 | 2,042 Wh | 9.9 nights of 8 hours | $899 (Oct 24) |
Maker prices, Oct 26, 2026, unless dated. Checkout price applies.
More: EcoFlow DELTA 2 Max specs and every runtime · CPAP runtime on every station · calculator for your own devices.
Quick answers
How long will the EcoFlow DELTA 2 Max run a CPAP?
About 9.9 nights of 8 hours for an AirSense 10 with humidifier (22 W), by our math: 2,048 Wh × 0.85 ÷ 22 W.
How long does the EcoFlow DELTA 2 Max take to recharge with solar?
About 2.7 hours of strong sun from empty at its 1,000 W solar input, by our 75% assumption; clouds and winter sun add time.
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