The setup

The loads, with the goal of three nights of 8 hours with the humidifier on, 72 hours without a recharge
ApplianceHow manyRunningEnergy a day
CPAP machine with heated humidifier156 W56 W × 8 h = 448 Wh
Running, everything on at once
56 W
Starting watts needed
56 W, no load starts above its running watts
Watt hours a day
448 Wh
Goal
three nights of 8 hours with the humidifier on, 72 hours without a recharge (72 h)

Change this setup in the calculator

  • Watts vary by model and age. Check the label on your own appliance and enter it for an exact answer.
For medical equipment, confirm the power needs with the device maker and keep a backup plan. This page is not medical advice. At the top of the published range, 73 W, the ALLPOWERS R2500 V2 lasts 2.8 days of this routine, short of the 72 hour goal.

Enough: 28 of 54 stations

The 54 power stations in the data set, ranked smallest capacity first (the closest fit), then lower price, then lighter. Whether a link can earn us money never changes the order.

Enough Watts may earn a commission when you buy through links on this page. It never changes the math or the ranking.

22 more stations that are enough, in the same order
Power stationCapacityRuntime of this routineEverything nonstop
EcoFlow DELTA 3 Max Plus2,048 Wh3.9 days31.1 h
OUPES Mega 2 Pro2,048 Wh3.9 days31.1 h
DJI Power 20002,048 Wh3.9 days31.1 h
BLUETTI Elite 200 V22,074 Wh3.9 days31.5 h
Anker SOLIX F26002,560 Wh4.9 days38.9 h
BLUETTI Apex 3002,765 Wh5.2 days42.0 h
BLUETTI Elite 3003,014 Wh5.7 days45.8 h
EcoFlow DELTA 3 Ultra3,072 Wh5.8 days46.6 h
Anker SOLIX F30003,072 Wh5.8 days46.6 h
EcoFlow DELTA 3 Ultra Plus3,072 Wh5.8 days46.6 h
Pecron E3600LFP3,072 Wh5.8 days46.6 h
ALLPOWERS R35003,168 Wh6.0 days2.0 days
ALLPOWERS R40003,456 Wh6.6 days2.2 days
BLUETTI Elite 4003,840 Wh7.3 days2.4 days
Anker SOLIX F38003,840 Wh7.3 days2.4 days
Anker SOLIX F3800 Plus3,840 Wh7.3 days2.4 days
Goal Zero Yeti PRO 40003,994 Wh7.6 days2.5 days
EcoFlow DELTA Pro 34,096 Wh7.8 days2.6 days
OUPES Guardian 6000 V24,608 Wh8.7 days2.9 days
Jackery Explorer 5000 Plus5,040 Wh9.6 days3.2 days
EcoFlow DELTA Pro Ultra6,144 Wh11.7 days3.9 days
EcoFlow DELTA Pro Ultra X12,288 Wh23.3 days7.8 days

Runs it, but not long enough: 26 of 54 stations

They pass the output, surge and voltage checks but run out before the goal. Longest runtime first.

Stations that run the setup but not for 72 hours
Power stationCapacityRuntime of this routineEverything nonstop
Jackery Explorer 1500 v21,536 Wh2.9 days23.3 h
Jackery Explorer 1500 Ultra1,536 Wh2.9 days23.3 h
Goal Zero Yeti 15001,505 Wh2.9 days22.8 h
Jackery Explorer 1000 Plus1,265 Wh2.4 days19.2 h
BLUETTI AC1801,152 Wh2.2 days17.5 h
ALLPOWERS R15001,152 Wh2.2 days17.5 h
Jackery Explorer 1000 v21,070 Wh2.0 days16.2 h
Anker SOLIX C10001,056 Wh2.0 days16.0 h
BLUETTI Elite 100 V21,024 Wh46.6 h15.5 h
EcoFlow DELTA 3 Classic1,024 Wh46.6 h15.5 h
Anker SOLIX C1000 Gen 21,024 Wh46.6 h15.5 h
EcoFlow DELTA 31,024 Wh46.6 h15.5 h
EcoFlow DELTA 3 Plus1,024 Wh46.6 h15.5 h
Pecron E1000LFP1,024 Wh46.6 h15.5 h
DJI Power 10001,024 Wh46.6 h15.5 h
BLUETTI Elite 100 mini1,005 Wh45.8 h15.3 h
Goal Zero Yeti 700677 Wh30.8 h10.3 h
Jackery Explorer 600 v2640 Wh29.1 h9.7 h
DJI Power 500512 Wh23.3 h7.8 h
Goal Zero Yeti 500499 Wh22.7 h7.6 h
Goal Zero Yeti 300297 Wh13.5 h4.5 h
BLUETTI Elite 30 V2288 Wh13.1 h4.4 h
Jackery Explorer 300 v2288 Wh13.1 h4.4 h
EcoFlow RIVER 3 Plus286 Wh13.0 h4.3 h
Jackery Explorer 240 v2256 Wh11.7 h3.9 h
BLUETTI Elite 10 Mini128 Wh5.8 h1.9 h

What to know

A weekend at a campsite without hookups is where a CPAP battery matters most. With the heated humidifier on, a typical machine in the data draws about 56 W, from 22 W to 73 W by model and setting. Three nights of 8 hours take 1,344 Wh usable, about 1,581 Wh of rated capacity at 85% efficiency.

28 of the 54 stations hold three nights on one charge. The closest fit is the ALLPOWERS R2500 V2 (1,920 Wh). The lightest one that is enough is the Jackery Explorer 2000 v2 at 39.5 lb (17.9 kg), which matters when you carry it from the car.

The humidifier is most of the draw. Without it the machine uses about 11 W, and the question below shows how far that stretches the same stations. Many machines also run from a 12 V DC cable sold by the device maker, which skips the inverter; the figures here use the AC outlets, the cautious case.

A folding solar panel refills between nights. At 4 peak sun hours, counting 75% of the panel rating, about 150 W of panels put back one night. Batteries charge slowly or not at all near freezing, and each station page lists the lowest charging temperature its maker publishes. The two night CPAP setup covers an outage at home.

Questions

What size power station do you need for CPAP camping with a heated humidifier?
This setup uses 448 Wh a day. Lasting 72 hours takes 1,344 Wh usable, about 1,581 Wh of rated capacity at 85% efficiency. It also needs 56 W of continuous output.
Which is the smallest power station that is enough?
The ALLPOWERS R2500 V2, at 1,920 Wh: 1,632 Wh usable gives 3.6 days of this routine. The ranking puts the smallest capacity first, then the lower price, then the lighter unit.
What if the humidifier stays off?
With a CPAP machine without a humidifier in place of a CPAP machine with a heated humidifier, the setup uses 88 Wh a day and needs 11 W running. 48 of the 54 power stations are enough for three nights of 8 hours with the humidifier on, 72 hours without a recharge, against 28 for the setup above. The closest fit is the Goal Zero Yeti 500 (499 Wh).