How long will a portable power station run a CPAP machine?

It depends mostly on the humidifier. ResMed's battery guide lists an AirSense 10 at 10 cmH2O drawing 0.93 A at 12 V with no humidifier (about 11 W) and 2.30 A with the humidifier at 4 (about 28 W). With a 1,070 Wh Jackery Explorer 1000 v2 and an 85% conversion factor, that is about 10 eight-hour nights dry, or about 4 nights with the humidifier at 4. These are planning estimates, not medical guidance.

Does the humidifier matter for CPAP battery life?

Yes. In ResMed's table for the AirSense 10 at 10 cmH2O, the draw goes from 0.93 A without the humidifier to 3.66 A with it at 8 and 4.92 A with the heated tube added, roughly five times as much.

Is a power station a safe backup for a CPAP?

Treat it as a convenience, not a medical backup system. The FDA advises checking with your device maker or supplier whether your device can run on battery power and how, and telling your electric company and fire department that you use a powered medical device.

How many nights will a power station run your CPAP?

Pick your machine, pressure and humidifier setting. The draw comes from ResMed's own battery tables, and the result is in eight-hour nights.

Last updatedOct 18, 2026

CPAP drawResMed battery guide and user guide; Philips DreamStation 2 instructions; read Oct 18, 2026

Read this before relying on the number

A power station is not a medical backup system, and this is a planning estimate, not medical advice. The FDA advises asking your device maker or supplier whether your CPAP can run on battery power and how, and telling your electric company and fire department that you use a powered medical device. If you depend on a device to stay alive, the FDA says to seek emergency services. What to check first.

Your CPAP and station

Your CPAP

Machine and figure

Humidifier and tubing

Pressure, cmH2OYour prescribed pressure, or the next one up

CPAP draw (in watts)Filled from the figure you picked; type your own if you measured it

Hours of sleep a night example (hours)ResMed's tables size batteries for 8 hours

Station

Power station example

Rated capacity (in watt-hours)From the maker's spec page

Conversion efficiency example (percent)Jackery publishes 0.85 for AC; makers rarely publish a DC-port figure

Share of capacity you can use example (percent)Depth of discharge

Station's own idle draw example (in watts)Matters at CPAP-sized loads. BLUETTI gives about 15 W for its AC180 on AC

Result

0nights

Next: size a station for CPAP plus the rest of an outage day, or refill it with solar during the day.

Every station against this CPAP

Nights at your hours of sleep. Prices are what each maker's US store showed on Oct 18, 2026.

Every station in our table against this load
Station	Capacity, Wh	Runs it for	AC output, W	Surge, W	Store price	Verdict

ResMed's figures: AirSense 10 at 12 V DC

Current draw at 12 V DC through ResMed's DC-to-DC converter, from the Air10 series converter table in ResMed's battery guide (198103/7, 2018-08). Watts = amps × 12. The guide predates the AirSense 11 and doesn't list it.

How the nights are worked out

Nights = station capacity × share you can use × efficiency ÷ (CPAP watts + station idle watts) ÷ hours of sleep. Running the CPAP from the station's 12 V DC outlet with the maker's DC cable usually wastes less than going through the station's AC inverter and the CPAP's power brick, but makers rarely publish DC-port efficiency, so the 85% default is an example. ResMed's AirSense 11 figures (56.1 W typical, 73.2 W peak) are from its user guide and describe the whole system, including humidification; Philips' 80 W for the DreamStation 2 is the power supply it requires for humidification, an upper bound rather than a measured draw. Philips' instructions also say its attached battery pack doesn't support humidification. Sources are on Methods and sources.

CPAP and oxygen: read first
What the FDA advises for powered medical devices in an outage.
Oxygen concentrator power
Watts by model and flow, and hours from a station.
Solar recharge
Refill the station during the day for the next night.