What size power station for a CPAP machine without a humidifier?

It needs a station with at least 11 W of continuous output. At the default 85% efficiency it takes about 104 Wh of rated capacity for 8 hours of running, and 311 Wh for 24 hours of running. 54 of the 54 power stations in the Enough Watts data set can power it. The smallest one that keeps it going for 24 hours of running is the Goal Zero Yeti 500 (499 Wh).

Updated October 6, 2026

11W
Continuous output
None
Surge to start it
104Wh
Capacity for 8 hours of running
311Wh
Capacity for 24 hours of running
54 of 54
Stations that power it

Watts

Typical figures for this type, from the sources at the foot of this page. Watts vary by model and age. Check the label on your own appliance and enter it for an exact answer.

Running, typical: 11 W
Running, low to high: 7 W to 20 W
Starting: No start surge
Typical use a day: 8 hthe calculator starts from this, and you can change it
Average draw while on: 11 W
Voltage: 120 V

For medical equipment, confirm the power needs with the device maker and keep a backup plan. This page is not medical advice. At the high end of the range, 20 W, the Goal Zero Yeti 500 runs it for 21.2 h, not 38.6 h.

Explained in: Watts vs watt hours, explained and How to read an appliance label for watts.

The math

Worked with the typical figure, as the calculator does it.

Output11 W running, so the station's continuous output must be at least 11 W.
SurgeNo start surge: the running figure covers it.
Average draw11 W: the running watts count for every hour it is on.
A typical day11 W × 8 h = 88 Wh a day.
8 hours of running11 W × 8 h = 88 Wh usable, ÷ 0.85 = 104 Wh of rated capacity.
24 hours of running11 W × 24 h = 264 Wh usable, ÷ 0.85 = 311 Wh of rated capacity.
On the Goal Zero Yeti 500499 Wh × 0.85 = 424 Wh usable, ÷ 11 W = 38.6 h.

Stations that run it

Every power station in the data with this appliance alone plugged in, at 85% efficiency. Type the running watts from your own label and the table works it out again.

Running watts

Typical 11 W, from 7 W to 20 W. Watts vary by model and age. Check the label on your own appliance and enter it for an exact answer.

54 of 54 power stations run it at 11 W.

Power stations for a cPAP machine (no humidifier) at 11 W
Power station	Can it power it	Running time	Output	Start surge
BLUETTI Elite 10 Mini	Runs it	9.9 h	200 W	300 W
Jackery Explorer 240 v2	Runs it	19.8 h	300 W	600 W
EcoFlow RIVER 3 Plus	Runs it	22.1 h	600 W	1,200 W
BLUETTI Elite 30 V2	Runs it	22.3 h	600 W	not published
Jackery Explorer 300 v2	Runs it	22.3 h	300 W	600 W
Goal Zero Yeti 300	Runs it	23.0 h	350 W	600 W
Goal Zero Yeti 500	Runs it	38.6 h	500 W	1,000 W
DJI Power 500	Runs it	39.6 h	1,000 W	not published
Jackery Explorer 600 v2	Runs it	2.1 days	500 W	1,000 W
Goal Zero Yeti 700	Runs it	2.2 days	600 W	1,000 W
BLUETTI Elite 100 mini	Runs it	3.2 days	700 W	1,050 W
BLUETTI Elite 100 V2	Runs it	3.3 days	1,800 W	3,600 W
EcoFlow DELTA 3 Classic	Runs it	3.3 days	1,800 W	3,600 W
Anker SOLIX C1000 Gen 2	Runs it	3.3 days	2,000 W	3,000 W
EcoFlow DELTA 3	Runs it	3.3 days	1,800 W	3,600 W
EcoFlow DELTA 3 Plus	Runs it	3.3 days	1,800 W	3,600 W
Pecron E1000LFP	Runs it	3.3 days	1,800 W	3,000 W
DJI Power 1000	Runs it	3.3 days	2,200 W	4,400 W
Anker SOLIX C1000	Runs it	3.4 days	1,800 W	2,400 W
Jackery Explorer 1000 v2	Runs it	3.4 days	1,500 W	3,000 W
BLUETTI AC180	Runs it	3.7 days	1,800 W	2,700 W
ALLPOWERS R1500	Runs it	3.7 days	1,800 W	3,000 W
Jackery Explorer 1000 Plus	Runs it	4.1 days	2,000 W	4,000 W
Goal Zero Yeti 1500	Runs it	4.8 days	2,000 W	3,600 W
Jackery Explorer 1500 v2	Runs it	4.9 days	2,000 W	4,000 W
Jackery Explorer 1500 Ultra	Runs it	4.9 days	1,800 W	3,600 W
ALLPOWERS R2500 V2	Runs it	6.2 days	2,500 W	4,000 W
Jackery Explorer 2000 v2	Runs it	6.6 days	2,200 W	4,400 W
Jackery HomePower 2000 Plus v2	Runs it	6.6 days	2,400 W	4,800 W
EcoFlow DELTA 3 Max	Runs it	6.6 days	2,400 W	4,800 W
Pecron E2400LFP	Runs it	6.6 days	2,400 W	4,000 W
Anker SOLIX C2000 Gen 2	Runs it	6.6 days	2,400 W	4,000 W
EcoFlow DELTA 3 Max Plus	Runs it	6.6 days	3,000 W	6,000 W
OUPES Mega 2 Pro	Runs it	6.6 days	2,500 W	not published
DJI Power 2000	Runs it	6.6 days	3,000 W	not published
BLUETTI Elite 200 V2	Runs it	6.7 days	2,600 W	not published
Anker SOLIX F2600	Runs it	8.2 days	2,400 W	2,800 W
BLUETTI Apex 300	Runs it	8.9 days	3,840 W	not published
BLUETTI Elite 300	Runs it	9.7 days	2,400 W	4,800 W
EcoFlow DELTA 3 Ultra	Runs it	9.9 days	3,600 W	7,200 W
Anker SOLIX F3000	Runs it	9.9 days	3,600 W	7,200 W
EcoFlow DELTA 3 Ultra Plus	Runs it	9.9 days	3,600 W	7,200 W
Pecron E3600LFP	Runs it	9.9 days	3,600 W	7,000 W
ALLPOWERS R3500	Runs it	10.2 days	3,200 W	6,000 W
ALLPOWERS R4000	Runs it	11.1 days	3,600 W	6,000 W
BLUETTI Elite 400	Runs it	12.4 days	2,600 W	5,200 W
Anker SOLIX F3800	Runs it	12.4 days	6,000 W	9,000 W
Anker SOLIX F3800 Plus	Runs it	12.4 days	6,000 W	9,000 W
Goal Zero Yeti PRO 4000	Runs it	12.9 days	3,600 W	7,200 W
EcoFlow DELTA Pro 3	Runs it	13.2 days	4,000 W	8,000 W
OUPES Guardian 6000 V2	Runs it	14.8 days	6,000 W	9,000 W
Jackery Explorer 5000 Plus	Runs it	16.2 days	7,200 W	14,400 W
EcoFlow DELTA Pro Ultra	Runs it	19.8 days	7,200 W	10,800 W
EcoFlow DELTA Pro Ultra X	Runs it	39.6 days	12,000 W	not published

Add it to the runtime calculator with the rest of your list

What moves the number

Higher pressure means more watts. On a 12 V supply, a common machine draws about 11 W at a moderate pressure and 20 W at a high one.

Device makers sell DC converters that run a machine from a 12 V outlet, which skips the station inverter and stretches the battery.

Questions

How many watts does a CPAP machine without a humidifier use?

About 11 W while running, from 7 W to 20 W across the models in our sources. Watts vary by model and age. Check the label on your own appliance and enter it for an exact answer.

Can a portable power station run a CPAP machine without a humidifier?

Yes. All 54 power stations in the Enough Watts data set can power it on its own. It takes at least 11 W of continuous output.

How long will a power station run a CPAP machine without a humidifier?

It depends on the battery. At 85% efficiency the smallest station that powers it, the BLUETTI Elite 10 Mini (128 Wh), gives about 9.9 h. The largest, the EcoFlow DELTA Pro Ultra X (12,288 Wh), gives about 39.6 days.

Does a CPAP machine without a humidifier need extra watts to start?

No. It has no motor or compressor, so it draws about its running watts from the moment it is switched on. The check that matters is a continuous output of at least 11 W.

Setups that include it

A CPAP for two nights

Sources

Researched from these pages, then checked against them a second time.

Power consumption of Air10 devices (ResMed 1018673/1) maker specification sheet, checked October 6, 2026
ResMed Battery Guide: using stand-alone, deep-cycle batteries (198103/7) maker support page, checked October 6, 2026
AirSense 11 User guide (Americas, multilingual) 398291 maker manual, checked October 6, 2026

We read published figures and do the math; we do not measure appliances. The methodology states every formula on this page. Capacities are rated watt hours: 1,000 Wh rated gives 850 Wh usable at the default.