How long will an EcoFlow RIVER Pro run a CPAP with heated humidifier?
About 8.1 hours — 8 h 8 min typically, from 7 h 39 min in the worst case to 8 h 36 min at best. That assumes a CPAP with heated humidifier pulling 60 W for 85% of the time (average 51 W), plus the station's 10 W AC mains socket overhead — 61 W in total out of 496 usable watt-hours.
The heater plate cycles, so it averages less than its peak, but it can still triple the night's energy compared with humidifier off.
The numbers
| Setup | Average draw | Cautious | Typical | Best case |
|---|---|---|---|---|
| 1 × CPAP with heated humidifier, UK 230 V | 61 W | 7 h 39 min | 8 h 8 min | 8 h 36 min |
| 2 × CPAP with heated humidifier, UK 230 V | 112 W | 4 h 10 min | 4 h 26 min | 4 h 41 min |
| 1 × CPAP with heated humidifier, US 120 V | 61 W | 7 h 39 min | 8 h 8 min | 8 h 36 min |
- 1 nights of eight hours, or 0.34 days of continuous running.
- Usable energy: 496 Wh of the 720 Wh on the box, after chemistry, inverter losses and the reserve.
- To keep it going for a full 24 hours you would need about 2,014 Wh of rated capacity — 2.8× this station.
- Start-up: the CPAP with heated humidifier asks for 100 W at switch-on against this station's 1,200 W peak — comfortable.
Buy the EcoFlow RIVER Pro
Where to buy
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If this is for a power cut
If someone depends on this, follow the equipment provider's backup plan first. In the UK, ask your network operator to add them to the Priority Services Register. These make the dark hours easier either way.
DC power cable for the CPAP. Running a CPAP straight from a 12 V socket skips the inverter and makes any battery last much longer.
Look for: A cable made for your exact machine; ask the equipment supplier which one before buying.
Plug-in power failure lights. They live in a socket as a night light, charge themselves, and switch on the moment the mains goes off, so you are never hunting for a torch in the dark.
Look for: A built-in battery you can pull out and carry as a torch, and a UK three-pin plug if you are in the UK.
Amazon links are affiliate searches for a type of product, not endorsements of a model; the site may earn a commission at no extra cost to you.
More: Medical equipment in a power cut, and the power cut essentials list (US edition).
What changes the answer
| If instead… | Typical runtime | Change |
|---|---|---|
| The pack is two years old | 7 h 29 min | -8% |
| The pack is five years old | 6 h 30 min | -20% |
| It is −10 °C outside | 6 h 30 min | -20% |
| You run it flat, no reserve | 9 h 2 min | +11% |
| You keep 20% back | 7 h 13 min | -11% |
If you need it to run longer
These run a CPAP with heated humidifier for at least twice as long as the EcoFlow RIVER Pro does, cheapest first.
| Station | Wh | Typical | Indicative price |
|---|---|---|---|
| Jackery Explorer 2000 v2 | 2,042 | 23 h 11 min | £849 / $999 |
| Bluetti AC180P | 1,440 | 16 h 37 min | £899 / $649 |
| OUKITEL P2001 Ultimate | 2,000 | 22 h 43 min | £999 / $1,099 |
| Bluetti AC240 | 1,536 | 17 h 10 min | £1,099 / $999 |
The cheapest step up: Jackery Explorer 2000 v2
Amazon and approved-programme links are affiliate links; the site may earn a commission at no extra cost to you. Links marked “official site” are untracked. Prices and stock change constantly — check before you buy.
Smaller options that still work
| Station | Wh | Typical | Weight | Indicative price |
|---|---|---|---|---|
| Bluetti EB70S | 716 | 8 h 32 min | 9.7 kg | £449 / $429 |
| UGREEN PowerRoam 600 | 680 | 8 h 14 min | 8.4 kg | £449 / $499 |
| Goal Zero Yeti 700 | 677 | 8 h 12 min | 9.2 kg | — / $700 |
| Jackery Explorer 600 Plus | 632 | 7 h 47 min | 7.3 kg | — |
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