CPAP Battery Backup for Power Outages: Nights per Battery
How many nights a power station runs a CPAP with and without the heated humidifier, with the honest caveats on medical equipment.
Updated October 27, 2026 · By the OutageWatt team · How we calculate
In short
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A note before the numbers
We are not medical professionals. ResMed and Philips don't publish a single “watts” figure for their machines, so the values below are working estimates that reflect commonly reported draws and the power supply ratings. If you depend on your machine, ask your equipment supplier for its consumption with your settings, keep a backup plan, and tell your utility: many have medical baseline or priority programs.
Nights per power station
| Power station | No humidifier (~30 W) | Heated humidifier (~65 W) | Price |
|---|---|---|---|
| Jackery Explorer 1000 v2 | 3.9 nights | 1.8 nights | $499 |
| EcoFlow DELTA 3 Plus | 3.8 nights | 1.7 nights | $719 |
| Anker SOLIX C1000 Gen 2 | 3.8 nights | 1.7 nights | $499.99 |
| BLUETTI AC180 | 4.2 nights | 1.9 nights | $499 |
| Anker SOLIX F2000 | 7.5 nights | 3.5 nights | $1,999 |
| Jackery HomePower 2000 Plus v2 | 7.5 nights | 3.5 nights | $1,069 |
8-hour nights through the AC outlet at 88% inverter efficiency. A DC cable from your CPAP maker avoids most of that loss.
Stretch every night
- Turn off the humidifier and heated tube for the outage if your doctor agrees: it is by far the biggest draw.
- Use the maker's DC adapter where one exists, plugged into the station's 12 V output.
- Charge the station during the day from solar or a car if the outage runs long.
- Test a full night on battery before storm season, not during the storm.
To cover the fridge and Wi-Fi too, run the CPAP + fridge scenario.
Light 1 kWh stations for the bedside
Picked from the makers' published specs and US store prices, checked October 28, 2026. We haven't tested them ourselves, and we may earn a commission if you buy through these links, at no extra cost to you. The full comparison is on our power station page.
Jackery
Explorer 1000 v2
The lightest way to keep a fridge, Wi-Fi and lights going through one night.
- Capacity
- 1.1 kWh
- Output
- 1.5 kW
- Surge
- 3.0 kW†
- Solar in
- 400 W†
- Weight
- 23.8 lb
- Warranty
- —
† reported by retailers or reviews, not yet confirmed on Jackery's spec sheet.
$499store price, October 28, 2026
Check price
Anker SOLIX
C1000 Gen 2
The most output in the 1 kWh class (2,000 W), so a microwave or coffee maker runs next to the fridge.
- Capacity
- 1.0 kWh
- Output
- 2.0 kW
- Surge
- 3.0 kW
- Solar in
- 600 W
- Weight
- 24.9 lb
- Warranty
- —
$499.99store price, October 28, 2026
Check priceFrequently asked questions
How many nights will a power station run a CPAP?
Without the humidifier, a CPAP drawing around 30 W uses about 240 Wh a night, so a 1,000 Wh station covers about 3.7 nights. With a heated humidifier at about 65 W, it's closer to 1.7. Check your own machine's figure with your supplier.
Should I use the DC cable instead of the AC outlet?
If your machine maker sells a DC power cable or converter for it, yes: it skips the inverter's 10–15% loss and can stretch runtime noticeably. Use only the maker's approved accessory.
Is a power station enough for an oxygen concentrator?
Only as a short bridge. A home concentrator draws around 350 W continuously, about 8 kWh a day. Anyone on oxygen needs a plan made with their doctor and supplier, backup cylinders, and registration with their utility's medical program.
Free tool
Plan CPAP plus essentials
CPAP, fridge, Wi-Fi and phones through the outage.
OutageWatt is independent and not affiliated with any brand named here. Specs come from makers' spec sheets and are dated; anything wired into your home needs a licensed electrician and a transfer switch or interlock. Never backfeed through an outlet.