How long will an EcoFlow RIVER 3 Max run a heated clothes airer?
About an hour — 1 h 12 min typically, from 1 h 8 min in the worst case to 1 h 17 min at best. That assumes a heated clothes airer pulling 300 W continuously, plus the station's 9 W AC mains socket overhead — 309 W in total out of 372 usable watt-hours.
No thermostat on most models, so it draws its full rating for as long as it is on — a cover over the load dries it faster and saves hours.
The numbers
| Setup | Average draw | Cautious | Typical | Best case |
|---|---|---|---|---|
| 1 × heated clothes airer, UK 230 V | 309 W | 1 h 8 min | 1 h 12 min | 1 h 17 min |
| 2 × heated clothes airer, UK 230 V | 609 W | 35 min | 37 min | 39 min |
| 1 × heated clothes airer, US 120 V | 309 W | 1 h 8 min | 1 h 12 min | 1 h 17 min |
- 0.2 nights of eight hours, or 0.05 days of continuous running.
- Usable energy: 372 Wh of the 512 Wh on the box, after chemistry, inverter losses and the reserve.
- To keep it going for a full 24 hours you would need about 10,204 Wh of rated capacity — 19.9× this station.
- Start-up: the heated clothes airer asks for 300 W at switch-on against this station's 1,200 W peak — comfortable.
Buy the EcoFlow RIVER 3 Max
Where to buy
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What changes the answer
| If instead… | Typical runtime | Change |
|---|---|---|
| The pack is two years old | 1 h 7 min | -7% |
| The pack is five years old | 58 min | -20% |
| It is −10 °C outside | 1 h 1 min | -15% |
| You run it flat, no reserve | 1 h 20 min | +12% |
| You keep 20% back | 1 h 4 min | -11% |
If you need it to run longer
These run a heated clothes airer for at least twice as long as the EcoFlow RIVER 3 Max does, cheapest first.
| Station | Wh | Typical | Indicative price |
|---|---|---|---|
| Jackery Explorer 1000 v2 | 1,070 | 2 h 31 min | £419 / $549 |
| Jackery Explorer 1000 Plus | 1,264 | 2 h 57 min | £549 / $999 |
| Anker SOLIX C1000 | 1,056 | 2 h 28 min | £699 / $799 |
| ALLPOWERS R1500 | 1,152 | 2 h 41 min | £699 / $539 |
The cheapest step up: Jackery Explorer 1000 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 |
|---|---|---|---|---|
| Goal Zero Yeti 500 | 499 | 1 h 10 min | 7.3 kg | — / $500 |
| Bluetti AC50B | 448 | 1 h 3 min | 6.5 kg | £299 / $399 |
| Bluetti AC60 | 403 | 57 min | 9.1 kg | £449 / $599 |
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