How long will an EcoFlow DELTA Pro Ultra run a garden inflatable (christmas or halloween)?
About 2.5 days — 2 days 12 h typically, from 2 days 8 h in the worst case to 2 days 15 h at best. That assumes a garden inflatable (christmas or halloween) pulling 50 W continuously, plus the station's 25 W AC mains socket overhead — 75 W in total out of 4,465 usable watt-hours.
Note how much of that draw is the station rather than the appliance: 33% of the energy goes on keeping the inverter awake. On a load this small, the idle draw matters more than the capacity does.
The numbers
| Setup | Average draw | Cautious | Typical | Best case |
|---|---|---|---|---|
| 1 × garden inflatable (christmas or halloween), UK 230 V | 75 W | 2 days 8 h | 2 days 12 h | 2 days 15 h |
| 2 × garden inflatable (christmas or halloween), UK 230 V | 125 W | 33 h 37 min | 35 h 43 min | 37 h 49 min |
| 1 × garden inflatable (christmas or halloween), US 120 V | 75 W | 2 days 8 h | 2 days 12 h | 2 days 15 h |
- 7.4 nights of eight hours, or 2.48 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 2,477 Wh of rated capacity — which this station has.
- Start-up: the garden inflatable (christmas or halloween) asks for 50 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 | 2 days 7 h | -8% |
| The pack is five years old | 47 h 38 min | -20% |
| It is −10 °C outside | 2 days 3 h | -15% |
| You run it flat, no reserve | 2 days 18 h | +11% |
| You keep 20% back | 2 days 5 h | -11% |
The fan runs the whole time it is standing up, so the hours it is on decide the cost.
If you need it to run longer
Nothing in this catalogue runs a garden inflatable (christmas or halloween) 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 garden inflatable (christmas or halloween) page for the full ranking.
Smaller options that still work
| Station | Wh | Typical | Weight | Indicative price |
|---|---|---|---|---|
| Jackery Explorer 5000 Plus | 5,040 | 2 days 6 h | 61 kg | — / $3,499 |
| Zendure SuperBase V4600 | 4,608 | 47 h 50 min | 53 kg | £2,999 / $4,999 |
| Goal Zero Yeti PRO 4000 | 3,993 | 42 h 41 min | 52.5 kg | — / $4,000 |
| EcoFlow DELTA Pro 3 | 4,096 | 42 h 32 min | 51.5 kg | £2,799 / $3,199 |
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