EcoFlow runtime estimate
Will the EcoFlow RIVER 2 Pro run a CPAP?
Estimate: about 1.5 nights with heated humidifier on, 2.7 nights with humidifier off, or 3.2 nights using a compatible CPAP DC converter cable.
A CPAP is a medical device. These are runtime estimates, not medical advice or a medical-safety guarantee. Test your exact setup at home before relying on it.
| Rated capacity | 768 Wh |
|---|---|
| Usable estimate | 768 Wh x 0.85 = 653 Wh on AC inverter |
| AC inverter | 800 W continuous fixture value |
| Chemistry | LiFePO4 |
| Weight | 17.2 lb |
| MSRP | $599, fixture checked 2026-06-12 |
| Source | https://www.ecoflow.com/us/river-2-pro-portable-power-station |
Line-by-line math
- CPAP humidifier on: 768 Wh x 0.85 = 653 Wh / 53 W = 12.3 h = 1.5 nights.
- CPAP humidifier off: 768 Wh x 0.85 = 653 Wh / 30 W = 21.8 h = 2.7 nights.
- Compatible DC cable: 768 Wh x 0.92 = 707 Wh / 28 W = 25.2 h = 3.2 nights.
- Full-size refrigerator: 768 Wh x 0.85 = 653 Wh / 150 W = 4.4 h.
Check brand page Search Amazon
Try this model with your loads
Pick loads, hours, and whether CPAP uses an AC inverter or a compatible DC converter cable.
A CPAP is a medical device. These are runtime estimates, not medical advice or a medical-safety guarantee. Test your exact setup at home before relying on it.