How Long Will a Power Station Run a CPAP?

By Hicham M. · Updated October 11, 2026 · How we calculate

A CPAP is one of the easiest things to run on a battery. We plan on 30 W for a CPAP with the humidifier off, which over an 8-hour night is about 240 Wh. At that rate a 1,000 Wh power station covers about 3.5 nights. Switch on the heated humidifier and tube and plan on 60 W or more, which halves it at least.

30 W sits in the middle of what’s published. General wattage charts list 30–60 W for a CPAP without heat, ResMed’s user guides list 53–56 W “typical”, and ResMed’s own battery test works out to about 7 W at a low pressure. Your pressure setting and machine decide where you land.

Running30 Wtypical range 30–60 W

Starting (surge)30 Wno startup surge

Average30 Wwhile on

Per day0.2 kWhat 8 h/day

Calculate with your model Find the right size

Runtime by power station

Nonstop runtime for one CPAP at 30 W average, with 85% inverter efficiency. Models that can't supply its running or starting power are listed separately below.

How long each power station runs a CPAP: longest 10
Power station	Battery	Runtime
Jackery Explorer 5000 Plus	5,040 Wh	5.9 days
EcoFlow DELTA Pro 3	4,096 Wh	4.8 days
Goal Zero Yeti PRO 4000	3,994 Wh	4.7 days
Anker SOLIX F3800	3,840 Wh	4.5 days
Anker SOLIX F3800 Plus	3,840 Wh	4.5 days
EcoFlow DELTA Pro Older	3,600 Wh	4.2 days
Anker SOLIX F3000	3,072 Wh	3.6 days
BLUETTI Elite 300	3,014 Wh	3.6 days
BLUETTI Apex 300	2,765 Wh	3.3 days
BLUETTI Elite 200 V2	2,074 Wh	2.4 days

Show the other 44 models that can run it

How long each power station runs a CPAP: the rest
Power station	Battery	Runtime
EcoFlow DELTA 3 Max	2,048 Wh	2.4 days
EcoFlow DELTA 3 Max Plus	2,048 Wh	2.4 days
EcoFlow DELTA 2 Max Older	2,048 Wh	2.4 days
BLUETTI AC200L	2,048 Wh	2.4 days
BLUETTI AC200MAX Older	2,048 Wh	2.4 days
Anker SOLIX C2000 Gen 2	2,048 Wh	2.4 days
Anker SOLIX F2000 (767) Older	2,048 Wh	2.4 days
DJI Power 2000	2,048 Wh	2.4 days
Jackery Explorer 2000 v2	2,042 Wh	2.4 days
Jackery Explorer 2000 Plus Older	2,042 Wh	2.4 days
BLUETTI AC200P Older	2,000 Wh	2.4 days
Jackery Explorer 1500 v2	1,536 Wh	44 hours
Jackery Explorer 1500 Ultra	1,536 Wh	44 hours
Goal Zero Yeti 1500X Older	1,516 Wh	43 hours
Goal Zero Yeti 1500	1,505 Wh	43 hours
Jackery Explorer 1000 Plus	1,264 Wh	36 hours
Anker SOLIX F1200 (757) Older	1,229 Wh	35 hours
BLUETTI AC180	1,152 Wh	33 hours
Jackery Explorer 1000 v2	1,070 Wh	30 hours
Anker SOLIX C1000	1,056 Wh	30 hours
EcoFlow DELTA 3	1,024 Wh	29 hours
EcoFlow DELTA 3 Plus	1,024 Wh	29 hours
EcoFlow DELTA 2 Older	1,024 Wh	29 hours
BLUETTI Elite 100 V2	1,024 Wh	29 hours
Anker SOLIX C1000 Gen 2	1,024 Wh	29 hours
DJI Power 1000	1,024 Wh	29 hours
Jackery Explorer 1000 Pro Older	1,002 Wh	28 hours
Jackery Explorer 1000 Older	1,002 Wh	28 hours
Goal Zero Yeti 1000	998 Wh	28 hours
EcoFlow RIVER 2 Pro Older	768 Wh	22 hours
Anker SOLIX C800 Plus	768 Wh	22 hours
BLUETTI EB70S Older	716 Wh	20 hours
Goal Zero Yeti 700	677 Wh	19 hours
Jackery Explorer 500 Older	518 Wh	15 hours
EcoFlow RIVER 2 Max Older	512 Wh	15 hours
DJI Power 500	512 Wh	15 hours
Jackery Explorer 300	293 Wh	8.3 hours
Jackery Explorer 300 v2	288 Wh	8.2 hours
Anker SOLIX C300	288 Wh	8.2 hours
EcoFlow RIVER 3 Plus	286 Wh	8.1 hours
BLUETTI EB3A Older	269 Wh	7.6 hours
Jackery Explorer 240 v2	256 Wh	7.3 hours
EcoFlow RIVER 3	245 Wh	6.9 hours
Jackery Explorer 240 Older	240 Wh	6.8 hours

We may earn a commission if you buy through these links. It never changes our numbers, and every model in our database is included whether or not it pays us. Learn more.

What the machine makers publish

Published CPAP power figures
Machine	Power supply	Published consumption
ResMed AirSense 11	65 W	56.1 W typical, 73.2 W peak
ResMed AirSense 10	90 W	53 W typical, 104 W peak
ResMed AirMini (travel)	24 V, 0.83 A	6.3 W typical, 27 W peak
Philips DreamStation 2	80 W needed for humidification	Not published

The “typical” numbers in ResMed’s user guides don’t say which settings they assume, so read them as an upper bound with the humidifier working rather than what your machine draws every night.

What heated humidification costs you

ResMed tested an AirSense 10 on its own 97 Wh Power Station II battery:

ResMed battery test results
Settings	Run time on 97 Wh	Works out to
10 cm H₂O, no leak, humidifier and heated tube off	14.3 hours	about 7 W
20 cm H₂O, 20 L/min leak, humidity level 1, heated tube on	3.3 hours	about 30 W
Same, humidity level 4	3.35 hours	about 29 W

Pressure and leak also differ between the first row and the others, so this doesn’t isolate the humidifier, and the humidity level barely mattered. Still, heated humidification at a higher pressure cut the runtime by three quarters. ResMed’s manual says to turn the humidifier off on battery “to maximise the life of your battery”, and Philips says the DreamStation 2 battery doesn’t support humidification at all.

Source: ResMed battery and device compatibility list (2015), hosted by a retailer; “works out to” is our division of 97 Wh by the run time.

Plan before you need it

The FDA asks anyone using a medical device at home to have a plan for outages, including how long the device lasts on battery and whether you have supplies for at least 3 days. Ask your equipment supplier or doctor; a power station is one part of that plan, not all of it.

Stretching a battery through the night

Turn off the humidifier and heated tube. ResMed recommends it on battery, and Philips’ battery pack doesn’t support humidification at all.
Use the maker’s DC cable or converter if there is one. ResMed sells DC/DC converters for the AirSense 10 and AirSense 11, and Philips sells a DC cord for DreamStation 2. Running from the station’s 12 V port skips inverter losses. Use only cords your CPAP’s manufacturer approves.
On AC, the inverter’s own idle draw matters at loads this small. Add 10–20 W under Settings in the runtime calculator for a cautious estimate.
A station with UPS or EPS mode can keep the CPAP running when the grid drops at night. Confirm that your machine tolerates the switchover before relying on it.
Don’t rely on a single battery for any medical device. Talk to your doctor or supplier about a backup plan.

Questions

What size power station do I need for a CPAP?

For one night without the humidifier, 300 Wh covers the machine with little to spare once you count inverter losses, so 500 Wh or more is the safer choice. For several nights, or with the humidifier on, look at 1,000 Wh or more.

How many watts does a CPAP use?

Without the humidifier, about 7 W at a low pressure in ResMed’s battery test; general wattage charts say 30–60 W. With a heated humidifier and tube, plan on 60 W or more. ResMed’s AirSense 11 power supply is rated 65 W and its AirSense 10 supply 90 W; those are maximums, not typical use.

Can I use a power station for a CPAP when camping?

Yes, it’s one of the most common uses. Recharge with solar during the day if you’re out for more than a night or two.

Sources

Wattage figures are typical values from the sources below. Your appliance may differ, so check its label or measure it with a plug-in watt meter.