How long will an EcoFlow RIVER Pro run an oxygen concentrator (5 L/min)?
About an hour — 1 h 23 min typically, from 1 h 18 min in the worst case to 1 h 28 min at best. That assumes an oxygen concentrator (5 L/min) pulling 350 W continuously, plus the station's 10 W AC mains socket overhead — 360 W in total out of 496 usable watt-hours.
A continuous-flow home concentrator is a serious load — a portable pulse-dose unit draws a fraction of this.
The numbers
| Setup | Average draw | Cautious | Typical | Best case |
|---|---|---|---|---|
| 1 × oxygen concentrator (5 L/min), UK 230 V | 360 W | 1 h 18 min | 1 h 23 min | 1 h 28 min |
| 2 × oxygen concentrator (5 L/min), UK 230 V | 710 W | — | — | — |
| 1 × oxygen concentrator (5 L/min), US 120 V | 360 W | 1 h 18 min | 1 h 23 min | 1 h 28 min |
- 0.2 nights of eight hours, or 0.06 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 11,889 Wh of rated capacity — 16.5× this station.
- Start-up: the oxygen concentrator (5 L/min) asks for 600 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 | 1 h 16 min | -8% |
| The pack is five years old | 1 h 6 min | -20% |
| It is −10 °C outside | 1 h 6 min | -20% |
| You run it flat, no reserve | 1 h 32 min | +11% |
| You keep 20% back | 1 h 13 min | -12% |
If you need it to run longer
These run an oxygen concentrator (5 L/min) 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 | 4 h 5 min | £849 / $999 |
| Bluetti AC180P | 1,440 | 2 h 53 min | £899 / $649 |
| OUKITEL P2001 Ultimate | 2,000 | 4 h | £999 / $1,099 |
| Bluetti AC240 | 1,536 | 3 h 4 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 | 1 h 27 min | 9.7 kg | £449 / $429 |
| UGREEN PowerRoam 600 | 680 | 1 h 23 min | 8.4 kg | £449 / $499 |
| Goal Zero Yeti 700 | 677 | 1 h 22 min | 9.2 kg | — / $700 |
| Jackery Explorer 600 Plus | 632 | 1 h 17 min | 7.3 kg | — |
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