If the power fails at 2 a.m., your CPAP is the one load in the house that can’t wait until morning. The good news: CPAPs are modest power draws, and most mid-size power stations can run one. The catch is that “can run one” and “can run one all night, with margin, the way you actually use it” are two different answers.
This roundup picks four stations from our 20-product database by use case — multi-night outages, a single night on a budget, travel, and a week without power. Every runtime below is capacity math, labeled Estimate, with the assumptions shown. For the underlying sizing method, see our CPAP backup power sizing guide — this page applies it to specific products.
A boundary before the picks: this is power planning, not medical advice. We can’t tell you any setup is safe for your condition. Verify your device’s draw with its manufacturer, size for the settings you actually use, test at home on a normal night, and talk to your clinician or device provider about anything device-specific.
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The draw, in plain numbers
A CPAP running pressure only typically draws ~40–90W depending on the machine, with ~60W the common planning figure (Estimate — check your manual; the number on the power brick is the supply’s rating, not necessarily the running draw).
The single biggest variable isn’t the brand of machine. It’s the heated humidifier: with the humidifier and heated tube running, draw roughly doubles — plan on ~90W (Estimate). Whether you use the humidifier is a therapy decision for you and your provider; what we can tell you is the power consequence, because it changes the battery you need by a full size class.
One efficiency fact that works in your favor: most CPAP makers sell a 12V DC converter for their machines. A station’s inverter loses roughly 15% of the energy it converts to AC (our math assumes 85% inverter efficiency). Running through a DC converter skips most of that loss, so the same station lasts longer. Whether a converter exists for your model, and whether a station’s DC output matches it, is a spec-sheet question for both manufacturers — but if it fits, it’s free runtime.
The math behind every “nights” figure below
We use the site’s standard formula — requirement = watts × hours ÷ 0.85 efficiency × 1.20 reserve:
- One night, pressure only (60W × 8h): ≈ 678Wh of station capacity
- One night, humidifier on (90W × 8h): ≈ 1,016Wh of station capacity
“Nights” for each pick = its rated capacity ÷ the nightly requirement above, rounded conservatively. The 20% reserve is deliberate: batteries age, rooms get cold, estimates are estimates. Note what this math does to the smallest stations in our database: the 268Wh BLUETTI EB3A, the 245Wh EcoFlow RIVER 3, and the 518Wh Jackery Explorer 500 all fall short of even one planned night — 17 of our 20 products clear a single night at 60W, and those three are why it isn’t 20.
Best overall for multi-night outages: BLUETTI Elite 200 V2
2,073.6Wh · 2,600W continuous · 53.4 lbs · LiFePO4 · $899 (price checked Oct 15, 2026 — prices change)
- Nights (Estimate): ≈3 nights pressure-only · ≈2 nights with humidifier
- Strength: the recharge speed to match the capacity. Its 1,000W solar input (Manufacturer specification) is the fastest in the 2kWh class alongside the EcoFlow DELTA 2 Max, so on a multi-day outage a sunny afternoon meaningfully refills what the night used — the difference between a station that lasts a weekend and one that lasts until the grid returns.
- Limitation: 53.4 lbs is the heaviest in its class (the Jackery Explorer 2000 v2 carries nearly the same capacity at 39.4 lbs). Fine beside a bed; not something you want to carry upstairs nightly. It also has no expansion-battery path in our records — 2,073.6Wh is the ceiling.
Full record: BLUETTI Elite 200 V2
Best budget pick for a single night: EcoFlow DELTA 2
1,024Wh · 1,800W continuous · 27 lbs · LiFePO4 · $349 (price checked Oct 15, 2026 — prices change)
- Nights (Estimate): 1 night with real margin pressure-only (≈1.5 in the raw math) · ≈1 night with humidifier, with essentially no margin to spare
- Strength: price per watt-hour. At $349 for 1,024Wh (Manufacturer specifications, price checked Oct 15, 2026), it’s the cheapest station in our database that clears the one-night requirement with reserve — nothing smaller or cheaper does the math. It’s the honest floor for CPAP backup, not a compromise pick.
- Limitation: the humidifier scenario uses the whole battery. If your humidifier runs all night, every night, treat this as a one-night-only answer and look at the 2kWh class above. An expansion battery (up to 3,072Wh total) exists, but at that combined price the 2kWh stations are usually the better buy.
Full record: EcoFlow DELTA 2
Best lightweight pick for travel: Jackery Explorer 1000 v2
1,070Wh · 1,500W continuous · 23.8 lbs · LiFePO4 · $499 (price checked Oct 17, 2026 — prices change)
- Nights (Estimate): 1 night with margin pressure-only (≈1.6 in the raw math) · ≈1 night with humidifier
- Strength: it’s the lightest full-night answer we stock — 23.8 lbs for a genuine 1,070Wh (Manufacturer specifications). For a station that has to move between a bedroom, a car, and a campsite, nothing else in our records clears the one-night bar at this weight; the next tier down (500Wh class) fails the math outright.
- Limitation: no expansion path, and 400W maximum solar input is slow if you’re recharging off-grid between nights. This is a one-to-two-night tool you recharge from a wall when you can, not a ride-out-the-week system.
Full record: Jackery Explorer 1000 v2
Best for a week-long outage: EcoFlow DELTA Pro 3
4,096Wh · 4,000W continuous · 113.5 lbs · LiFePO4 · $2,799 (price checked Oct 15, 2026 — prices change)
- Nights (Estimate): ≈6 nights pressure-only as it sits · ≈4 nights with humidifier · up to ≈12 nights with humidifier if expanded to its 12,288Wh maximum (Manufacturer specification)
- Strength: it’s the only pick here where a week is a planning scenario rather than a hope. The expansion headroom plus 2,600W of solar input (Manufacturer specifications) mean capacity can be added or refilled faster than a CPAP drains it, and the same unit covers the fridge and other household loads in our sizing guide scenarios while it’s at it.
- Limitation: cost and weight, plainly. $2,799 and 113.5 lbs is a home-backup appliance, not a CPAP accessory — it’s oversized if CPAP is genuinely your only load, and it does not travel. Buy it for the house, and let the CPAP be one of the things it covers.
Full record: EcoFlow DELTA Pro 3
The picks side by side
| Pick | Capacity | Weight | Price (checked) | Nights, no humidifier (Est.) | Nights, humidifier (Est.) |
|---|---|---|---|---|---|
| BLUETTI Elite 200 V2 — multi-night | 2,073.6Wh | 53.4 lbs | $899 (Oct 15, 2026) | ≈3 | ≈2 |
| EcoFlow DELTA 2 — budget night | 1,024Wh | 27 lbs | $349 (Oct 15, 2026) | 1 + margin | ≈1, no margin |
| Jackery Explorer 1000 v2 — travel | 1,070Wh | 23.8 lbs | $499 (Oct 17, 2026) | 1 + margin | ≈1 |
| EcoFlow DELTA Pro 3 — week-long | 4,096Wh (to 12,288Wh) | 113.5 lbs | $2,799 (Oct 15, 2026) | ≈6 | ≈4 |
| Also ran: BLUETTI AC180 | 1,152Wh | 35.3 lbs | $499 (Oct 15, 2026) | ≈1.7 | ≈1.1 |
The AC180 deserves its “also ran” line: at $499 it splits the DELTA 2 and the Explorer 1000 v2 on capacity (≈1.7 nights pressure-only in the math) and is a reasonable pick if the 2kWh class is more than you want to spend. Compare it directly on its product page.
How to choose — run your numbers, not ours
These picks assume 60W/90W draws and 8-hour nights. Your machine, your settings, and your sleep schedule move the answer:
- Get your real draw. Your manual or the manufacturer’s spec page beats any planning figure — including ours. If you can only find the power-brick rating, use it as the conservative number.
- Decide the humidifier question as a power question. If it stays on, you need roughly 1,016Wh per night of planned capacity; off, roughly 678Wh. (How you use your therapy is between you and your provider — we’re only pricing the electricity.)
- Count your nights, then add the reserve. Multiply the nightly requirement by the outage length you want to survive. Our formula already includes a 20% reserve; don’t strip it out to make a smaller station “fit.”
- Check the converter option. A manufacturer 12V DC converter, if one exists for your machine and matches the station’s DC output, effectively buys you runtime the AC math doesn’t credit.
- Test before it matters. Run one full night at home on the station and read the remaining charge in the morning. That number outranks every estimate on this page.
Run your own figures — your watts, your hours, your humidifier setting — in the Outage Brief sizing guide with the CPAP scenario, and read the full CPAP sizing guide for the safety framing behind the math.
Then join the Outage Brief newsletter: one short email a week with verified price checks and outage-prep walkthroughs, so the station you picked is charged, tested, and ready before the night you need it.
