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Portable power · Outage guide

Power station for CPAP: how many nights it runs, with the humidifier on or off

ResMed's own measurements put an AirSense 10 at 7 W alone and 22 W with the humidifier. That is the difference between 15.5 and 4.9 nights on a 1 kWh station, before choosing DC over AC.

Prices read
20 October 2026, on makers' own pages
Next review
January 2027
Compiled and verified by
Vincent Wesley Couey
Published
20 October 2026

PeakLoadout finding

On ResMed's measured figures, an AirSense 10 uses 7 W alone and 22 W with its humidifier, so a 1,024 Wh power station read on 20 October 2026 runs it about 15.5 eight-hour nights with the humidifier off and 4.9 with it on, through the AC outlet.

From ResMed's Power consumption of Air10 devices and Battery Guide; station capacities from makers' stores, 20 October 2026. Not medical advice: follow your device maker and clinician.

What size power station do you need for a CPAP?

Work it out from your settings, not the power brick:

  1. Humidifier off: an AirSense 10 uses about 7 Wh an hour, 56 Wh a night; even the 99 Wh Jackery Explorer 100 Plus covers about 1.5 nights on AC.
  2. Humidifier on: about 22 Wh an hour, 176 Wh a night: plan on 500 Wh or more for two or three nights.
  3. Humidifier and heated tube: about 34 Wh an hour: a 1 kWh station gives about 3.2 nights.
  4. Plug in through DC with your maker's converter where you can: it skips the inverter loss, which ResMed recommends.

How much power does a CPAP use?

Much less than the label on its power brick. The AirSense 11 guide lists a 65 W supply with "typical power consumption 56.1W", and the AirSense 10 a 90 W supply with "typical power consumption: 53W": those are supply-level figures, not what a night costs. ResMed's measured sheet for the AirSense 10 AutoSet gives 7 W for the device alone, 22 W with the humidifier at setting 6 and 34 W with the heated ClimateLineAir tube as well. The travel AirMini's guide gives 6.3 W typical.

What a CPAP draws, by settingwatts, from ResMed's own measurements
CPAP power draw by setting in watts: ResMed AirMini typical 6.3, AirSense 10 device only 7, with humidifier 22, with humidifier and heated tube 34. AirMini, typical: 6.3 W W. AirSense 10, device only: 7 W W. AirSense 10 + humidifier: 22 W W. AirSense 10 + humidifier + heated tube: 34 W WAirMini, typical6.3 WAirSense 10, device only7 WAirSense 10 + humidifier22 WAirSense 10 + humidifier + heated tube34 W
AirSense 10 AutoSet at 8 to 15 cmH2O, humidity 6, tube at 28 °C (ResMed, Power consumption of Air10 devices); AirMini from its user guide. Heated humidification multiplies the draw by three to five.

How many nights will a power station run it?

Divide the station's capacity, less about 15% for its inverter and your machine's power brick, by your watts times eight hours. With the humidifier on, a 288 Wh station gives about 1.4 night; a 1,024 Wh station about 4.9; a 1,505 Wh station about 7.3. Every station below was read on its maker's store on 20 October 2026.

Nights of CPAP, humidifier onAirSense 10 + humidifier (22 W), 8-hour nights, through the AC outlet
Nights of 8 hours each power station runs an AirSense 10 with humidifier at 22 watts through its AC outlet at 85% efficiency. Explorer 100 Plus: 0.5 nights nights. Explorer 300 v2: 1.4 nights nights. Pecron E300LFP: 1.4 nights nights. GZ Yeti 500: 2.4 nights nights. Pecron E500LFP: 2.8 nights nights. RIVER 2 Pro: 3.7 nights nights. DELTA 3 Classic: 4.9 nights nights. HomePower 1000 v2: 4.9 nights nights. Pecron E1000LFP: 4.9 nights nights. GZ NEW Yeti 1500: 7.3 nights nightsExplorer 100 Plus0.5 nightsExplorer 300 v21.4 nightsPecron E300LFP1.4 nightsGZ Yeti 5002.4 nightsPecron E500LFP2.8 nightsRIVER 2 Pro3.7 nightsDELTA 3 Classic4.9 nightsHomePower 1000 v24.9 nightsPecron E1000LFP4.9 nightsGZ NEW Yeti 15007.3 nights
Turn the humidifier off, as ResMed recommends on battery, and every bar roughly triples (7 W). Use a DC converter instead of the AC outlet and it grows again, because the inverter loss disappears.
StationCapacityMaker price, 20 Oct 2026Nights, humidifier off (7 W)Nights, humidifier on (22 W)Nights, heated tube (34 W)
Jackery Explorer 100 Plus99 Wh$1491.50.50.3
Jackery Explorer 300 v2 also on Amazon288 Wh$2794.41.40.9
Pecron E300LFP also on Amazon288 Wh$1794.41.40.9
Goal Zero Yeti 500499.2 Wh$499.957.62.41.6
Pecron E500LFP576 Wh$2698.72.81.8
EcoFlow RIVER 2 Pro also on Amazon768 Wh$37911.73.72.4
EcoFlow DELTA 3 Classic also on Amazon1,024 Wh$49915.54.93.2
Jackery HomePower 1000 v2 also on Amazon1,024 Wh$54915.54.93.2
Pecron E1000LFP also on Amazon1,024 Wh$39915.54.93.2
Goal Zero NEW Yeti 1500 also on Amazon1,505.28 Wh$1,499.9522.87.34.7

Should you plug a CPAP into the AC outlet or DC?

DC, with the converter your machine's maker sells. ResMed's Battery Guide says it "strongly recommend[s] using DC-to-DC converters to power your ResMed device from a battery rather than DC-to-AC inverters", and where an inverter is unavoidable, a pure sine wave inverter rated 300 W continuous and 500 W peak. Philips says to use only its own DC power cord and battery adapter with a DreamStation 2. The AC outlet works; it just spends part of the battery converting power twice. If you want the machine to keep running through a power cut without waking you, the station needs a UPS mode, and those differ: our three-way compares the switchover each flagship states.

Two ways to plug in, and where the energy goesResMed recommends the second
AC path: Station battery (DC), then Inverter (DC to AC, a loss), then Power brick (AC back to 24 V DC), then CPAP (runs on DC)Station batteryDCInverterDC to AC, a lossPower brickAC back to 24 V DCCPAPruns on DC DC path: Station battery (DC), then DC/DC converter (the maker's own), then CPAP (runs on DC)Station batteryDCDC/DC converterthe maker's ownCPAPruns on DC
On the AC path the energy is converted twice, DC to AC and back. ResMed: "We strongly recommend using DC-to-DC converters ... rather than DC-to-AC inverters"; if you must use an inverter, a pure sine wave model rated 300 W continuous and 500 W peak.

Should you turn the humidifier off on battery?

ResMed says yes: "If you are using an external battery, you should turn off the humidifier in order to maximize the life of your battery", and its support answer repeats it. On its figures the humidifier and heated tube are four fifths of the AirSense 10's draw. Whether you can sleep comfortably without humidification is a question for your clinician, not for a battery chart.

What about the Philips DreamStation 2?

Its manual gives an AC input range rather than a measured wattage, and says "an 80W power supply is required to support humidification". In November 2023 the FDA told users to monitor DreamStation 2 machines for signs of overheating, and Philips' May 2026 investor FAQ says it will resume selling new CPAP devices in the US only once the consent decree's requirements are met. If you own one, size the station from the 80 W supply as a ceiling and use Philips' own DC cable.

CPAP outage plan: what to check tonight
1. Find your machine's DC converter part number in its
   user guide (ResMed lists an Air11 / AirMini DC/DC converter)
2. Decide: humidifier on or off on battery (ResMed: off)
3. Watts x 8 h = Wh per night  (7 W -> 56 Wh; 22 W -> 176 Wh)
4. Station Wh x 0.85 / Wh per night = nights on the AC outlet
5. Keep the station charged; recharge from a running car only
   as your device maker allows (ResMed and Philips differ)
6. FDA: tell your power company and fire department you rely
   on a powered medical device; after power returns, check
   your settings have not changed

Which power station should a CPAP user buy?

For CPAP on battery

What helps a CPAP run longer on a power station

Check every part against your machine's own manual first.

Paid links. As an Amazon Associate we earn from qualifying purchases. Prices and stock are Amazon's, and change; we list categories, not endorsements.

How we worked this out

Method

Device power comes only from the manufacturers' documents: ResMed's Power consumption of Air10 devices sheet (which gives watt-hours, read here as per hour of use, consistent with ResMed's 12 V current figures), the ResMed Battery Guide, the AirSense 11 and AirMini user guides, and the DreamStation 2 manual. Nights assume 8 hours and 85% of rated capacity reaching the machine through the AC outlet. Station capacities and prices are the makers' own, read 20 October 2026. This is arithmetic from published figures, not a test, and not medical advice: your machine, pressure and settings change the draw, so follow your device maker and clinician. The FDA's advice on medical devices in emergencies starts with reading your device's instructions.

FAQ

How long will a power station run a CPAP?

On ResMed's measured figures, an AirSense 10 uses about 7 W with the humidifier off and 22 W with it on. Through the AC outlet at 85% efficiency, a 1,024 Wh station runs it about 15.5 eight-hour nights with the humidifier off and 4.9 with it on.

Does a CPAP use less power without the humidifier?

Yes, by a lot. ResMed measured an AirSense 10 AutoSet at 7 W alone, 22 W with the humidifier and 34 W with the humidifier and heated tube, and it recommends turning the humidifier off when running from a battery.

Can I plug my CPAP into a power station's AC outlet?

Yes, but ResMed recommends a DC-to-DC converter instead, because the AC route converts power twice and wastes part of the battery. If you use an inverter, ResMed specifies a pure sine wave model rated 300 W continuous and 500 W peak.

What size power station do I need for a CPAP?

Multiply your watts by 8 hours for one night (7 W is 56 Wh; 22 W is 176 Wh), divide by 0.85 for losses, then multiply by the nights you want. For two or three nights with the humidifier on, plan on about 500 Wh or more.

Is the Philips DreamStation 2 safe to run on a power station?

Follow Philips' manual: it says to use only its own DC power cord and battery adapter, and that an 80 W supply is needed for humidification. The FDA asked DreamStation 2 users in November 2023 to monitor for signs of overheating; check the FDA and Philips for current advice.

Bottom line

Size from your settings, not your power brick: about 7 W humidifier off, 22 W on, 34 W with a heated tube on ResMed's figures. A 300 Wh station covers several humidifier-off nights; about 1 kWh covers a weekend with the humidifier on. Use your maker's DC converter where you can, and follow your device maker, your clinician and the FDA's outage advice before you rely on any of it.

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