How long will an EcoFlow RIVER 2 Pro run a CPAP?
About 12 hours on an EcoFlow RIVER 2 Pro.
Estimates use manufacturer specs; real runtime varies with your device and temperature.
Tell us what you need to keep on. We'll tell you the cheapest battery that does it.
Assumption: 40 W, humidifier off. ResMed lists the AirSense 11 at 56.1 W typical on its 65 W supply.
Using a CPAP for therapy? Follow your provider's and the maker's backup instructions.
| Scenario | Load | Hours |
|---|---|---|
| 40 W, humidifier off | 40 W | 12 hours |
| ResMed's 56.1 W typical figure | 56.1 W | 9 hours |
| 50 W humidifier added | 90 W | 6 hours |
| Math | 768 Wh × 0.9 × 0.85 ÷ (40 W + 10 W) = 12 hours | 12 hours |
Eligibility depends on your address and circuit. Check the rebate tracker.
SCE: $149 after $200 off. PG&E: $49 after $300 off (290–1,000 Wh).
What changes the number
- A humidifier drops this pack under a night.
- Heated tubing is the higher row.
- Cold and battery age. Self-use is 10 W on this 12 hours figure.
Longer: Jackery Explorer 1000 v2, about 16 hours, $559.
What changed
- Sep 25, 2026: Prices checked.
- Sep 26, 2026: Page added.
Data: stations.json · runtimes.csv · EcoFlow RIVER 2 Pro · ResMed AirSense 11 User Guide (Americas). Peak 73.2 W.