How long will an EcoFlow DELTA Pro Ultra run a heated clothes airer?
About 14 hours — 13 h 44 min typically, from 12 h 56 min in the worst case to 14 h 33 min at best. That assumes a heated clothes airer pulling 300 W continuously, plus the station's 25 W AC mains socket overhead — 325 W in total out of 4,465 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 | 325 W | 12 h 56 min | 13 h 44 min | 14 h 33 min |
| 2 × heated clothes airer, UK 230 V | 625 W | 6 h 43 min | 7 h 8 min | 7 h 34 min |
| 1 × heated clothes airer, US 120 V | 325 W | 12 h 56 min | 13 h 44 min | 14 h 33 min |
- 1.7 nights of eight hours, or 0.57 days of continuous running.
- Usable energy: 4,465 Wh of the 6,144 Wh on the box, after chemistry, inverter losses and the reserve.
- To keep it going for a full 24 hours you would need about 10,733 Wh of rated capacity — 1.7× this station.
- Start-up: the heated clothes airer asks for 300 W at switch-on against this station's 11,200 W (230 V) / 14,400 W (120 V) peak — comfortable.
Buy the EcoFlow DELTA Pro Ultra
Where to buy
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What changes the answer
| If instead… | Typical runtime | Change |
|---|---|---|
| The pack is two years old | 12 h 38 min | -8% |
| The pack is five years old | 10 h 59 min | -20% |
| It is −10 °C outside | 11 h 41 min | -15% |
| You run it flat, no reserve | 15 h 16 min | +11% |
| You keep 20% back | 12 h 13 min | -11% |
If you need it to run longer
Nothing in this catalogue runs a heated clothes airer for twice as long as the EcoFlow DELTA Pro Ultra. Either it is already near the top of the range, or this appliance is beyond what portable batteries do well — see the heated clothes airer page for the full ranking.
Smaller options that still work
| Station | Wh | Typical | Weight | Indicative price |
|---|---|---|---|---|
| Jackery Explorer 5000 Plus | 5,040 | 11 h 31 min | 61 kg | — / $3,499 |
| Zendure SuperBase V4600 | 4,608 | 10 h 28 min | 53 kg | £2,999 / $4,999 |
| EcoFlow DELTA Pro 3 | 4,096 | 9 h 18 min | 51.5 kg | £2,799 / $3,199 |
| Goal Zero Yeti PRO 4000 | 3,993 | 9 h 8 min | 52.5 kg | — / $4,000 |
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