Medical-device backup
Best power station for CPAP (2026)
CPAP machines are actually one of the easiest loads to size: they draw a low, steady ~30–60W (no heated humidifier) or ~60–100W (humidifier on). That means even a mid-size station runs one for multiple nights. The math is simple — hours ≈ (station Wh × 0.85) ÷ CPAP watts — and the 0.85 accounts for inverter losses.
Estimated CPAP runtime by station
Based on a typical 40W draw without humidifier and 90W with the heated humidifier on. Your machine's actual draw varies — check its power brick label. Figures are estimates, not test results.
| Station (capacity) | No humidifier (~40W) | Heated humidifier (~90W) | Typical price range |
|---|---|---|---|
| BLUETTI AC180 (1,152Wh) | ~24 hrs (~3 nights) | ~11 hrs (~1.3 nights) | $449–$499 |
| Jackery Explorer 1000 v2 (1,070Wh) | ~22–23 hrs (~2.8 nights) | ~10 hrs (~1.2 nights) | $499–$799 |
| EcoFlow DELTA 2 (1,024Wh) | ~21–22 hrs (~2.7 nights) | ~9–10 hrs (~1.2 nights) | $349–$699 |
| Anker SOLIX C1000 Gen 2 (1,024Wh) | ~21–22 hrs (~2.7 nights) | ~9–10 hrs (~1.2 nights) | $470–$799 |
| EcoFlow DELTA 2 Max (2,048Wh) | ~43 hrs (~5+ nights) | ~19 hrs (~2.4 nights) | $849–$1,399 |
| Geneverse HomePower Two Pro (2,419Wh) | ~51 hrs (~6 nights) | ~23 hrs (~2.8 nights) | Check manufacturer* |
*We could not verify current Geneverse street pricing from a reliable recent source — check geneverse.com directly. "Nights" assumes 8 hours of sleep.
What we'd actually recommend
For CPAP backup specifically, you don't need the biggest station — you need enough nights plus portability, since the station may need to sit on a nightstand:
- 1–2 night outages, no humidifier: any of the four ~1,000Wh stations above gives you 2–3 nights with margin. Pick by price and weight — the Jackery Explorer 1000 v2 (23.8 lbs) is the easiest to carry to the bedroom; the EcoFlow DELTA 2 is usually cheapest on sale.
- Heated humidifier users: the humidifier roughly doubles power draw. Either turn it off during outages (biggest single saving you can make) or step up to a 2kWh-class station like the DELTA 2 Max.
- Multi-day outages: pair any station with solar panels to refill by day — see our solar blackout guide. A CPAP's modest draw is exactly the kind of load solar can sustain.
Three tips that beat buying a bigger station
- Turn off the heated humidifier and heated tube. This alone can cut your CPAP's draw roughly in half — the difference between one night and two-plus on the same station.
- Use a 12V DC adapter if your machine supports one. Running the CPAP from the station's DC/car port skips the AC inverter entirely, avoiding ~15% conversion loss. Most major CPAP makers sell a DC adapter for their machines.
- Do a trial run. Run your CPAP from the station overnight while the grid is fine. You'll learn your machine's actual draw and wake up knowing — not hoping — that the setup works.
What about BiPAP / ASV / oxygen concentrators?
BiPAP and ASV machines draw in the same ballpark as CPAP — the math above applies, but verify your model's draw. Oxygen concentrators are a different story entirely (typically 300–600W+ continuous): size those with our calculator and discuss backup plans with your doctor well in advance.
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Related guide: Best Portable Power Stations with UPS Mode: Keep Your PC Alive — UPS-mode picks for home offices, with switchover times explained.