How long will a Bluetti AC240 run incandescent Christmas tree lights (500 bulbs)?
About 5.1 hours — 5 h 7 min typically, from 4 h 49 min in the worst case to 5 h 25 min at best. That assumes incandescent Christmas tree lights (500 bulbs) pulling 204 W continuously, plus the station's 14 W AC mains socket overhead — 218 W in total out of 1,116 usable watt-hours.
The old bulbs draw about six times what LEDs do for the same tree, and run hot.
The numbers
| Setup | Average draw | Cautious | Typical | Best case |
|---|---|---|---|---|
| 1 × incandescent Christmas tree lights (500 bulbs), UK 230 V | 218 W | 4 h 49 min | 5 h 7 min | 5 h 25 min |
| 2 × incandescent Christmas tree lights (500 bulbs), UK 230 V | 422 W | 2 h 29 min | 2 h 39 min | 2 h 48 min |
| 1 × incandescent Christmas tree lights (500 bulbs), US 120 V | 218 W | 4 h 49 min | 5 h 7 min | 5 h 25 min |
- 0.6 nights of eight hours, or 0.21 days of continuous running.
- Usable energy: 1,116 Wh of the 1,536 Wh on the box, after chemistry, inverter losses and the reserve.
- To keep it going for a full 24 hours you would need about 7,199 Wh of rated capacity — 4.7× this station.
- Start-up: the incandescent Christmas tree lights (500 bulbs) asks for 204 W at switch-on against this station's 3,600 W peak — comfortable.
Buy the Bluetti AC240
Where to buy
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What changes the answer
| If instead… | Typical runtime | Change |
|---|---|---|
| The pack is two years old | 4 h 43 min | -8% |
| The pack is five years old | 4 h 6 min | -20% |
| It is −10 °C outside | 4 h 21 min | -15% |
| You run it flat, no reserve | 5 h 41 min | +11% |
| You keep 20% back | 4 h 33 min | -11% |
If you need it to run longer
These run incandescent Christmas tree lights (500 bulbs) for at least twice as long as the Bluetti AC240 does, cheapest first.
| Station | Wh | Typical | Indicative price |
|---|---|---|---|
| EcoFlow DELTA Pro | 3,600 | 11 h 47 min | £2,499 / $2,699 |
| EcoFlow DELTA Pro 3 | 4,096 | 13 h 17 min | £2,799 / $3,199 |
| Anker SOLIX F3800 | 3,840 | 12 h 34 min | £2,999 / $3,499 |
| Zendure SuperBase V4600 | 4,608 | 14 h 57 min | £2,999 / $4,999 |
The cheapest step up: EcoFlow DELTA Pro
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 AC180P | 1,440 | 4 h 51 min | 16 kg | £899 / $649 |
| Jackery Explorer 1500 Pro | 1,512 | 4 h 49 min | 17 kg | — / $1,699 |
| Goal Zero Yeti 1500X | 1,516 | 4 h 49 min | 20.7 kg | — / $1,125 |
| ALLPOWERS S2000 Pro | 1,451 | 4 h 36 min | 14.5 kg | £899 / $549 |
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