How many nights will the EcoFlow DELTA Pro 3 run a CPAP with heated humidifier?

About 12 nights of 8 hours (102 hours in total). A CPAP with heated humidifier averages about 34 W, and the 4,096 Wh battery gives about 3,482 Wh after inverter losses.

How much longer does it last without the heated humidifier?

With the heated humidifier on (about 34 W), about 12 nights (4 days). Without it (about 7 W), about 62 nights (21 days). Turning the humidifier off is the easiest way to stretch a charge.

Is the EcoFlow DELTA Pro 3 enough backup for a CPAP with heated humidifier?

Only as a short bridge. It covers about 12 nights (102 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.

EcoFlow · Will it run?

Can the EcoFlow DELTA Pro 3 run a CPAP with heated humidifier?

Published October 10, 2026

Short answerYes

Yes. The EcoFlow DELTA Pro 3 runs a CPAP with heated humidifier for about 12 nights (102 hours) from a full charge. At about 34 W on average it uses 1% of the battery an hour, and the 4,000 W output is far more than it needs.

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Key numbers

Nights per charge: 12 nights; 4 days
Battery used per hour: 1%; at 34 W average

CPAP with heated humidifier

Running: 34 W; 22–60 W range
Start-up: 104 W
Average: 34 W; runs all the time

EcoFlow DELTA Pro 3

Battery: 4,096 Wh; about 3,482 Wh usable
Output: 4,000 W; continuous
Surge: 8,000 W; start-up peak

How we worked it out: 4,096 Wh × 0.85 ÷ 34 W = about 4 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

EcoFlow DELTA Pro 3

4,096 Wh · 4,000 W output · 8,000 W surge · 113.5 lb

Full specs and runtimes

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What else the EcoFlow DELTA Pro 3 runs

One device at a time, from a full charge.

Other power stations for a CPAP with heated humidifier

The nearest sizes that also run it.

Keep going

Real runtime depends on the model you own, room temperature and battery age. The 4 days above is an estimate, not a measured result.

Common questions

How many nights will the EcoFlow DELTA Pro 3 run a CPAP with heated humidifier?: About 12 nights of 8 hours (102 hours in total). A CPAP with heated humidifier averages about 34 W, and the 4,096 Wh battery gives about 3,482 Wh after inverter losses.
How much longer does it last without the heated humidifier?: With the heated humidifier on (about 34 W), about 12 nights (4 days). Without it (about 7 W), about 62 nights (21 days). Turning the humidifier off is the easiest way to stretch a charge.
Is the EcoFlow DELTA Pro 3 enough backup for a CPAP with heated humidifier?: Only as a short bridge. It covers about 12 nights (102 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.