Best Portable Power Station for CPAP (2026)

A CPAP blower draws very little. The heated humidifier is what drains a battery. ResMed lists these figures for the AirSense 10 at 10 cm H₂O on 12 V DC:

Setting	Draw
No humidifier	About 11 W
Humidifier on 4	About 28 W
Humidifier on 8	About 44 W
Heated tube + humidifier on 8	About 59 W

Other machines are in a similar range; check your manual. For more settings, see how long a power station runs a CPAP. Never change prescribed settings without asking your provider.

Station	Capacity	No humidifier	Humidifier on 4	Humidifier on 8
EcoFlow Delta 3 Plus	1,024 Wh	About 10.7	About 4.2	About 2.7
Anker SOLIX C1000 Gen 2	1,024 Wh	About 10.7	About 4.2	About 2.7
Jackery HomePower 2000 Plus v2	2,048 Wh	About 21	About 8.4	About 5.4
EcoFlow River 3 Plus	286 Wh	About 3.0	About 1.2	About 0.7

These figures use rated capacity at 92% DC efficiency and the ResMed draws above. On AC, expect fewer nights. Try your own machine in the runtime calculator.

We picked from stations we've reviewed in full. For CPAP use, we weighted capacity, a 12 V DC socket, pure sine wave AC, switchover time, weight and solar input. Each station has an OffGrid Current rating out of 10, computed from its specs. The weights are on how we test. We haven't tested these units hands-on, and we don't rank by price.

Best overall

EcoFlow Delta 3 Plus

Leave the Delta 3 Plus plugged in beside the bed and it acts as a battery backup. If the power drops, it takes over in under 10 ms, so the CPAP keeps running.

Pros

• About 10 nights without the humidifier
• Under 10 ms switchover keeps the CPAP running in an outage
• Recharges from the wall in about 56 minutes
• Expands to 5 kWh

Cons

• 27.6 lb is heavy for travel
• About 2.7 nights with the humidifier on 8

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Best for camping

Anker SOLIX C1000 Gen 2

The C1000 Gen 2 matches the Delta 3 Plus on capacity and weighs less. A solar panel at camp tops it up during the day. For more camping picks, see the best portable power stations for camping.

Pros

• About 10 nights without the humidifier
• 24.9 lb
• 600 W solar input
• 10 ms switchover

Cons

• Not expandable
• Still too heavy for backpacking

Check price on AmazonRead our full review

Best for the humidifier

Jackery HomePower 2000 Plus v2

If you can't sleep without the humidifier, capacity is what counts. The HomePower 2000 Plus v2 doubles it, and also covers a fridge or router in an outage.

Pros

• About 5 to 8 nights with the humidifier on
• 10 ms switchover
• Expands to about 12 kWh
• 2,400 W runs other loads too

Cons

• 41.5 lb
• Warranty is 3 years, plus 2 with registration

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Best small station

EcoFlow River 3 Plus

The River 3 Plus is the small station for a weekend away. It's only enough without the humidifier, but it also works as a quiet bedside backup at home, rated under 30 dB. We pick it over the higher-rated Bluetti Elite 30 V2 here because it takes an extra battery (up to 858 Wh), which means more nights. For more options this size, see the best small portable power stations.

Pros

• About 3 nights without the humidifier, on DC
• 12 V car socket for a CPAP DC cord
• Under 10 ms switchover at home
• LiFePO4, 5-year warranty

Cons

• About 1 night with the humidifier on 4
• 10.4 lb

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• A 12 V DC socket: use your machine maker's DC cord or converter. It skips the inverter and gives more nights.
• Pure sine wave AC: ResMed recommends it if you run on AC.
• Switchover time: 10 ms or less keeps the CPAP running when the grid drops. See using a power station as a UPS.
• Capacity for your humidifier: size for the setting you actually use.
• Weight and solar: for camping, see solar panel sizing.

Power stations make no fumes, so they're fine in a bedroom. See are power stations safe indoors.

• EcoFlow Delta 3: same 1,024 Wh as the Delta 3 Plus, with 500 W solar input.
• Jackery Explorer 1000 v2: 23.8 lb for 1,024 Wh, but rated 5.7.
• Jackery Explorer 1000 Plus: 1,264 Wh, but no stated switchover time.
• Bluetti AC180: 1,152 Wh, but a 20 ms switchover.
• Jackery Explorer 300: 7.1 lb, about 3 nights without the humidifier, but an older NMC battery.
• Anker SOLIX C300 DC: 288 Wh, runs a CPAP on its 12 V socket, but no AC outlets.
• Bluetti Elite 30 V2: 288 Wh in 9.5 lb with a 5-year warranty, but it can't take an extra battery.

For home outages beyond the bedroom, see the best portable power stations for home backup.

For every use, see our best portable power stations overview.

What size power station do I need for a CPAP?

About 300 Wh covers about three nights without the humidifier. About 1 kWh covers about 10 nights without it, or 2 to 4 with it.

Will a 300 Wh station run a CPAP all night?

Yes, without the humidifier. With the humidifier on, a 300 Wh station may not last a full night.

Should I run my CPAP on DC or AC?

DC, if your CPAP has a DC cord or converter. It skips the inverter and runs longer.

Can a power station be a CPAP battery backup during outages?

Yes. Keep it plugged in beside the bed. A station with 10 ms or less switchover, such as the Delta 3 Plus, takes over without the CPAP stopping.

Can solar keep a CPAP running?

Yes. A station with solar input can recharge during the day. For multi-day trips, pair it with a panel sized for your nightly use.