How many nights will the BLUETTI AC180 run a CPAP without a humidifier?

About 17 nights of 8 hours (140 hours in total). A CPAP without a humidifier averages about 7 W, and the 1,152 Wh battery gives about 979 Wh after inverter losses.

How long does it last with a heated humidifier?

With the heated humidifier on (about 34 W), about 3 nights (29 hrs). Without it (about 7 W), about 17 nights (6 days). Turning the humidifier off is the easiest way to stretch a charge.

Is the BLUETTI AC180 enough backup for a CPAP without a humidifier?

Only as a short bridge. It covers about 17 nights (140 hours) from a full charge. A power station should never be your only backup for medical equipment: ask your equipment supplier what they provide in an outage, register with your utility’s medical-needs program, and keep the settings your prescriber gave you.

Bluetti · Will it run?

Can the BLUETTI AC180 run a CPAP (no humidifier)?

Published October 10, 2026

Short answerYes

Yes. The BLUETTI AC180 runs a CPAP without a humidifier for about 17 nights (140 hours) from a full charge. At about 7 W on average it uses 0.7% of the battery an hour, and the 1,800 W output is far more than it needs.

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Key numbers

Nights per charge: 17 nights; 6 days
Battery used per hour: 0.7%; at 7 W average

CPAP (no humidifier)

Running: 7 W; 5–15 W range
Start-up: 10 W
Average: 7 W; runs all the time

BLUETTI AC180

Battery: 1,152 Wh; about 979 Wh usable
Output: 1,800 W; continuous
Surge: 2,700 W; start-up peak

How we worked it out: 1,152 Wh × 0.85 ÷ 7 W = about 6 days (8 hours a night). The 0.85 covers inverter and battery losses. We do not test units ourselves; the numbers come from the official spec sheets and typical device draws. How we pick

BLUETTI AC180

1,152 Wh · 1,800 W output · 2,700 W surge · 35.3 lb

Full specs and runtimes

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What else the BLUETTI AC180 runs

One device at a time, from a full charge.

Other power stations for a CPAP without a humidifier

The nearest sizes that also run it.

Keep going

Real runtime depends on the model you own, room temperature and battery age. The 6 days above is an estimate, not a measured result.

Common questions

How many nights will the BLUETTI AC180 run a CPAP without a humidifier?: About 17 nights of 8 hours (140 hours in total). A CPAP without a humidifier averages about 7 W, and the 1,152 Wh battery gives about 979 Wh after inverter losses.
How long does it last with a heated humidifier?: With the heated humidifier on (about 34 W), about 3 nights (29 hrs). Without it (about 7 W), about 17 nights (6 days). Turning the humidifier off is the easiest way to stretch a charge.
Is the BLUETTI AC180 enough backup for a CPAP without a humidifier?: Only as a short bridge. It covers about 17 nights (140 hours) from a full charge. A power station should never be your only backup for medical equipment: ask your equipment supplier what they provide in an outage, register with your utility’s medical-needs program, and keep the settings your prescriber gave you.