EcoFlow River 2 Pro scored 82 out of 100 in our testing and ranks #4 in our best portable power stations guide as our best portable power station for CPAP. It ran a CPAP on 12V for 25 hours at 17.6 lb.
What is the best portable power station for CPAP?
The best portable power station for CPAP is the EcoFlow River 2 Pro, a 17.6 lb station that ran a ResMed CPAP on 12V for 25 hours.
EcoFlow River 2 Pro Portable Power Station
- Capacity: 768 Wh LiFePO4
- Output: 800 W, X-Boost 1,600 W
- Weight: 17.6 lb
- Our recharge: 0 to 80% in 51 min
Bottom Line : A 17.6 lb station that powers a CPAP for a full night and recharges in about an hour, with a fan whine and a fixed rear handle.
Pros
- 25 hours of CPAP on 12V
- 17.6 lb, an easy one-handed carry
- 0 to 80 percent in 51 minutes
- 38 hours on a 12V cooler
Cons
- 48.2 dBA fan whine while recharging
- 28.5 ms switchover dropped an office PC
- The rear handle doesn't fold
Powering a CPAP Overnight
A ResMed CPAP on 12V ran for 25 hours and the Dometic cooler for 38 hours. The test fridge ran for 11.8 hours on 614 Wh, and a 750 W hammer drill ran without a problem.
Wall charging at 935 W reached 80 percent in 51 minutes and full in 1 hour 11 minutes. A 220 W bifacial panel gave 195 W and a full charge in 3 hours 46 minutes.
Ryan then used it on day trips in his F-250 in September 2026, where it ran a 12V fridge for 24 hours plus laptop charging and refilled from the wall to full in 70 minutes. The fans reached 45 dBA under an AC load, and its 800 W limit won't start a coffee maker.
Where It Asks Something of You
The cooling fans whine at 48.2 dBA during a full 935 W recharge, and switchover measured 28.5 ms, which dropped an unbuffered office PC during one test cycle. The 1,500 W kettle tripped it in under 2 seconds, and the fixed rear handle stops the unit packing flush against a wall.
Spec Sheet vs Our Test
Fast wall charging. At 935 W from the wall we saw 80 percent in 51 minutes and full in 1 hour 11 minutes. The fans whine at 48.2 dBA while it does it.
Under 30 ms UPS switchover. We measured 28.5 ms, inside the claim, but an unbuffered office PC dropped during one test cycle, so it isn't a safe PC backup.
800 W output, 1,600 W X-Boost. The Fellow 1,200 W kettle ran on X-Boost but took 5 minutes 12 seconds to boil because the voltage drops, and a 1,500 W kettle at full voltage tripped the inverter in under 2 seconds. A 750 W hammer drill ran without trouble.
17.2 lb. EcoFlow's US listing says 17.2 lb. Our scale read 17.6 lb. The fixed, non-folding rear handle stops the unit packing flush against a wall.
Should You Buy the EcoFlow River 2 Pro?
For a CPAP and little else, the River 2 Pro is light and quick to charge. Need more capacity? The EcoFlow DELTA 2 Max.
CPAP users and weekend campers who want a light station.
Compare With
- Anker SOLIX C1000: our best overall portable power station.
- Bluetti Elite 200 V2: our best portable power station for power tools.
- DJI Power 1000 V2: our quietest portable power station.
- EcoFlow DELTA Pro 3: our best portable power station for home backup.
- Jackery 1000 Plus: our best portable power station for off-grid camping.
- EcoFlow DELTA 2 Max: our best portable power station for campervans.
- Goal Zero Yeti 700: our best rugged portable power station.
- Jackery Explorer 300: our best portable power station for tent camping.
- Jackery Explorer 2000 Plus: our best portable power station for RVs.
See all ten, and how we tested them, in our best portable power stations guide. For every type of generator, start at our best generators guide.
Editor's Note, 5 November 2026: Updated to match our portable power stations guide: Ryan used it on day trips in his F-250, and its marks and overall are now his. This station now scores 82 out of 100, ranks #4 and is our best portable power station for CPAP.
Editor's Note, 1 November 2026: Rewritten from the Lake Tahoe test log Ryan and John supplied on 1 November 2026, to match our rebuilt portable power stations guide. The score of 75 is now the average of four bench marks, and the earlier score and award on this page have been replaced.
Editor's Note, 20 October 2026: Renamed this pick's award to say what it is best for, to match our updated buying guide. Scores and rankings are unchanged.
Editor's Note, 17 October 2026: We removed the star rating and review count we had copied from a retailer's page. The only ratings on this page are our own.
Editor's Note: Updated 13 August 2026: product photography added, the price-per-watt-hour figure rechecked against the live listing, and alternatives linked below.
Our Testers
This review was edited by Sean Williams and tested by our lead tester, Ryan Williams, and John Palmer.
- Sean Williams, Editor-in-Chief. Sean built the team of researchers and testers behind our reviews and edits every guide. His rule: we say what we actually found.
- Ryan Williams, Lead Tester. Ryan leads our field tests and our generator and solar testing.
- John Palmer, Tester. John tests our generators and power stations alongside Ryan.
