Yes, easily. With the humidifier off, a CPAP uses about 7 W, so a 288 Wh power station lasts about four 8-hour nights and a 1,000 Wh unit lasts about 15 nights.
CPAP power supplies carry big numbers on the label. ResMed's AirSense 10 lists 53 W typical and 104 W peak. Those are ratings for the power supply, which also has to feed the heated humidifier, not what the blower uses on its own. With the humidifier off, the machine itself needs only a few watts. Using a heated humidifier? It needs three to five times as much power, so see our CPAP with heated humidifier page for those numbers.
Because a CPAP has no real start-up surge, any station in our table can run it. The only question is how many nights you need. At 7 W, an 8-hour night uses about 56 Wh. After inverter losses, that is roughly 66 Wh of battery per night. A 288 Wh unit covers about four nights, a 500 Wh unit about seven, and a 1,000 Wh unit about 15. Even at 10 W, a 288 Wh station still gives you about three nights.
This is the one job where a small, light station makes real sense. You do not need a 2,000 Wh unit for a CPAP alone. Buy bigger only if you also want to run a fridge, a router or other devices from the same battery. A power station should never be your only backup for a CPAP or any equipment you rely on to breathe. Talk to your equipment supplier about outage plans, and register with your utility's medical-needs program so they know you depend on power.
How long does each power station run a CPAP (no humidifier)?
At about 7 W on average, a CPAP (no humidifier) runs for about 4 nights (35 hrs) on the 286 Wh EcoFlow RIVER 3 Plus, about 15 nights (121 hrs) on a 1,000 Wh-class unit (998–1,070 Wh) and about 62 nights (497 hrs) on the 4,096 Wh EcoFlow DELTA Pro 3.
Nights (8 hours each) a CPAP (no humidifier) runs on each power station, from a full charge with nothing else plugged in (15% inverter loss). Sorted by battery size.
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Nights (8 hours each) a CPAP (no humidifier) runs on each power station, from a full charge with nothing else plugged in (15% inverter loss). Sorted by battery size.
Estimate: battery Wh × 0.85 ÷ 7 W average (7 W × 1 duty), with 8 hours of use a night. Your model may draw more or less; check its label. Prices are typical ranges we checked by hand on October 9, 2026, not live prices.
ResMed measured its AirSense 10 AutoSet at about 7 W with the humidifier off, so an 8-hour night uses roughly 60 Wh, and its bilevel AirCurve models measured 9 to 10 W. Higher pressure settings use a little more. A battery should never be the only backup for life-support equipment.
We do not test units ourselves. Picks come from the official spec sheets and manuals, the watt-hour math on this site, and prices we check by hand. How we pick
Stations that can bridge a short outage for a CPAP (no humidifier)
• If your CPAP maker sells a 12V DC cord or converter for your model, plug it into the station's car port. That skips the inverter, which loses about 10 to 15% of the battery.
• Check the station's settings for an output timer or eco mode. If it can switch off the AC or DC port when the load is low, turn that off for overnight use so a small load like a CPAP is not cut.
• Turn on UPS or pass-through mode at bedtime if your station has it, and test it once by unplugging the station from the wall while the CPAP runs.
• Keep the station charged between outages. Check it regularly and top it up, so it is full when the power goes out.
Add the rest of your devices
Yes, it can run this, about 35 hrs (about 4 nights at 8 hours a night) for a CPAP (no humidifier) on the EcoFlow RIVER 3 Plus.
How long will a power station run a CPAP without a humidifier?
About four 8-hour nights on a 288 Wh unit, about seven on a 500 Wh unit, and about 15 on a 1,000 Wh unit. In hours, that is about 35, 60 and 120 to 130. It is based on about 7 W, which ResMed measured for the AirSense 10 with the humidifier off.
What is the smallest power station that will run a CPAP all night?
Every station in our table can do one night. The smallest, at 288 Wh, lasts about four 8-hour nights at 7 W. If your machine draws closer to 15 W, plan on about two nights from the same unit.
Why does my CPAP power supply say 53 W if it only uses 7 W?
The label rates the power supply, which has to handle the heated humidifier and tube at full output. With those off, the blower alone uses a small fraction of that. The AirSense 10 lists 53 W typical and 104 W peak but measured about 7 W with the humidifier off.
Is a power station enough backup for a CPAP?
It is a good backup, but it should not be the only one. Batteries can run down or fail. Ask your equipment supplier what they recommend, keep the station charged, and register with your utility's medical-needs program so they know you depend on power.
