What size power station for a CPAP machine with a heated humidifier?

It needs a station with at least 56 W of continuous output. At the default 85% efficiency it takes about 527 Wh of rated capacity for 8 hours of running, and 1,581 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 ALLPOWERS R2500 V2 (1,920 Wh).

Updated October 6, 2026

56W
Continuous output
None
Surge to start it
527Wh
Capacity for 8 hours of running
1,581Wh
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: 56 W
Running, low to high: 22 W to 73 W
Starting: No start surge
Typical use a day: 8 hthe calculator starts from this, and you can change it
Average draw while on: 56 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, 73 W, the ALLPOWERS R2500 V2 runs it for 22.4 h, not 29.1 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.

Output56 W running, so the station's continuous output must be at least 56 W.
SurgeNo start surge: the running figure covers it.
Average draw56 W: the running watts count for every hour it is on.
A typical day56 W × 8 h = 448 Wh a day.
8 hours of running56 W × 8 h = 448 Wh usable, ÷ 0.85 = 527 Wh of rated capacity.
24 hours of running56 W × 24 h = 1,344 Wh usable, ÷ 0.85 = 1,581 Wh of rated capacity.
On the ALLPOWERS R2500 V21,920 Wh × 0.85 = 1,632 Wh usable, ÷ 56 W = 29.1 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 56 W, from 22 W to 73 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 56 W.

Power stations for a cPAP machine with heated humidifier at 56 W
Power station	Can it power it	Running time	Output	Start surge
BLUETTI Elite 10 Mini	Runs it	1.9 h	200 W	300 W
Jackery Explorer 240 v2	Runs it	3.9 h	300 W	600 W
EcoFlow RIVER 3 Plus	Runs it	4.3 h	600 W	1,200 W
BLUETTI Elite 30 V2	Runs it	4.4 h	600 W	not published
Jackery Explorer 300 v2	Runs it	4.4 h	300 W	600 W
Goal Zero Yeti 300	Runs it	4.5 h	350 W	600 W
Goal Zero Yeti 500	Runs it	7.6 h	500 W	1,000 W
DJI Power 500	Runs it	7.8 h	1,000 W	not published
Jackery Explorer 600 v2	Runs it	9.7 h	500 W	1,000 W
Goal Zero Yeti 700	Runs it	10.3 h	600 W	1,000 W
BLUETTI Elite 100 mini	Runs it	15.3 h	700 W	1,050 W
BLUETTI Elite 100 V2	Runs it	15.5 h	1,800 W	3,600 W
EcoFlow DELTA 3 Classic	Runs it	15.5 h	1,800 W	3,600 W
Anker SOLIX C1000 Gen 2	Runs it	15.5 h	2,000 W	3,000 W
EcoFlow DELTA 3	Runs it	15.5 h	1,800 W	3,600 W
EcoFlow DELTA 3 Plus	Runs it	15.5 h	1,800 W	3,600 W
Pecron E1000LFP	Runs it	15.5 h	1,800 W	3,000 W
DJI Power 1000	Runs it	15.5 h	2,200 W	4,400 W
Anker SOLIX C1000	Runs it	16.0 h	1,800 W	2,400 W
Jackery Explorer 1000 v2	Runs it	16.2 h	1,500 W	3,000 W
BLUETTI AC180	Runs it	17.5 h	1,800 W	2,700 W
ALLPOWERS R1500	Runs it	17.5 h	1,800 W	3,000 W
Jackery Explorer 1000 Plus	Runs it	19.2 h	2,000 W	4,000 W
Goal Zero Yeti 1500	Runs it	22.8 h	2,000 W	3,600 W
Jackery Explorer 1500 v2	Runs it	23.3 h	2,000 W	4,000 W
Jackery Explorer 1500 Ultra	Runs it	23.3 h	1,800 W	3,600 W
ALLPOWERS R2500 V2	Runs it	29.1 h	2,500 W	4,000 W
Jackery Explorer 2000 v2	Runs it	31.0 h	2,200 W	4,400 W
Jackery HomePower 2000 Plus v2	Runs it	31.1 h	2,400 W	4,800 W
EcoFlow DELTA 3 Max	Runs it	31.1 h	2,400 W	4,800 W
Pecron E2400LFP	Runs it	31.1 h	2,400 W	4,000 W
Anker SOLIX C2000 Gen 2	Runs it	31.1 h	2,400 W	4,000 W
EcoFlow DELTA 3 Max Plus	Runs it	31.1 h	3,000 W	6,000 W
OUPES Mega 2 Pro	Runs it	31.1 h	2,500 W	not published
DJI Power 2000	Runs it	31.1 h	3,000 W	not published
BLUETTI Elite 200 V2	Runs it	31.5 h	2,600 W	not published
Anker SOLIX F2600	Runs it	38.9 h	2,400 W	2,800 W
BLUETTI Apex 300	Runs it	42.0 h	3,840 W	not published
BLUETTI Elite 300	Runs it	45.8 h	2,400 W	4,800 W
EcoFlow DELTA 3 Ultra	Runs it	46.6 h	3,600 W	7,200 W
Anker SOLIX F3000	Runs it	46.6 h	3,600 W	7,200 W
EcoFlow DELTA 3 Ultra Plus	Runs it	46.6 h	3,600 W	7,200 W
Pecron E3600LFP	Runs it	46.6 h	3,600 W	7,000 W
ALLPOWERS R3500	Runs it	2.0 days	3,200 W	6,000 W
ALLPOWERS R4000	Runs it	2.2 days	3,600 W	6,000 W
BLUETTI Elite 400	Runs it	2.4 days	2,600 W	5,200 W
Anker SOLIX F3800	Runs it	2.4 days	6,000 W	9,000 W
Anker SOLIX F3800 Plus	Runs it	2.4 days	6,000 W	9,000 W
Goal Zero Yeti PRO 4000	Runs it	2.5 days	3,600 W	7,200 W
EcoFlow DELTA Pro 3	Runs it	2.6 days	4,000 W	8,000 W
OUPES Guardian 6000 V2	Runs it	2.9 days	6,000 W	9,000 W
Jackery Explorer 5000 Plus	Runs it	3.2 days	7,200 W	14,400 W
EcoFlow DELTA Pro Ultra	Runs it	3.9 days	7,200 W	10,800 W
EcoFlow DELTA Pro Ultra X	Runs it	7.8 days	12,000 W	not published

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

What moves the number

The humidity setting, a heated tube and a cold room push the draw up. With the humidifier on, a current machine averages about 56 W and peaks near 73 W. The same machine without humidification draws a fraction of that, as the CPAP without a humidifier page shows.

Ask the device maker before you change the settings for an outage.

Questions

How many watts does a CPAP machine with a heated humidifier use?

About 56 W while running, from 22 W to 73 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 with a heated humidifier?

Yes. All 54 power stations in the Enough Watts data set can power it on its own. It takes at least 56 W of continuous output.

How long will a power station run a CPAP machine with a heated humidifier?

It depends on the battery. At 85% efficiency the smallest station that powers it, the BLUETTI Elite 10 Mini (128 Wh), gives about 1.9 h. The largest, the EcoFlow DELTA Pro Ultra X (12,288 Wh), gives about 7.8 days.

Does a CPAP machine with a heated humidifier need extra watts to start?

No start surge is published for this type, so the site checks it at its 56 W running figure. Watts vary by model and age. Check the label on your own appliance and enter it for an exact answer.

Sources

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

AirSense 11 User guide (Americas, multilingual) 398291 maker manual, checked October 6, 2026
Power consumption of Air10 devices (ResMed 1018673/1) maker specification sheet, 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.