How many nights will the BLUETTI Apex 300 run a CPAP without a humidifier?

About 41 nights of 8 hours (336 hours in total). A CPAP without a humidifier averages about 7 W, and the 2,765 Wh battery gives about 2,350 Wh after inverter losses.

How long does it last with a heated humidifier?

With the heated humidifier on (about 34 W), about 8 nights (3 days). Without it (about 7 W), about 41 nights (14 days). Turning the humidifier off is the easiest way to stretch a charge.

Is the BLUETTI Apex 300 enough backup for a CPAP without a humidifier?

Only as a short bridge. It covers about 41 nights (336 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 Apex 300 run a CPAP (no humidifier)?

Published October 11, 2026

Short answerYes

Yes. The BLUETTI Apex 300 runs a CPAP without a humidifier for about 41 nights (336 hours) from a full charge. At about 7 W on average it uses 0.3% of the battery an hour, and the 3,840 W output is far more than it needs.

Add your other devices

Key numbers

Nights per charge: 41 nights; 14 days
Battery used per hour: 0.3%; 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 Apex 300

Battery: 2,765 Wh; about 2,350 Wh usable
Output: 3,840 W; continuous
Surge: 7,680 W; start-up peak

How we worked it out: 2,765 Wh × 0.85 ÷ 7 W = about 14 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 Apex 300

2,765 Wh · 3,840 W output · 7,680 W surge · 83.8 lb

Full specs and runtimes

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What else the BLUETTI Apex 300 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 14 days above is an estimate, not a measured result.

Common questions

How many nights will the BLUETTI Apex 300 run a CPAP without a humidifier?: About 41 nights of 8 hours (336 hours in total). A CPAP without a humidifier averages about 7 W, and the 2,765 Wh battery gives about 2,350 Wh after inverter losses.
How long does it last with a heated humidifier?: With the heated humidifier on (about 34 W), about 8 nights (3 days). Without it (about 7 W), about 41 nights (14 days). Turning the humidifier off is the easiest way to stretch a charge.
Is the BLUETTI Apex 300 enough backup for a CPAP without a humidifier?: Only as a short bridge. It covers about 41 nights (336 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.