How long will a Bluetti AC300 + B300 run incandescent Christmas tree lights (500 bulbs)?
About 10 hours — 10 h 4 min typically, from 9 h 28 min in the worst case to 10 h 39 min at best. That assumes incandescent Christmas tree lights (500 bulbs) pulling 204 W continuously, plus the station's 18 W AC mains socket overhead — 222 W in total out of 2,233 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 | 222 W | 9 h 28 min | 10 h 4 min | 10 h 39 min |
| 2 × incandescent Christmas tree lights (500 bulbs), UK 230 V | 426 W | 4 h 56 min | 5 h 14 min | 5 h 33 min |
| 1 × incandescent Christmas tree lights (500 bulbs), US 120 V | 222 W | 9 h 28 min | 10 h 4 min | 10 h 39 min |
- 1.3 nights of eight hours, or 0.42 days of continuous running.
- Usable energy: 2,233 Wh of the 3,072 Wh on the box, after chemistry, inverter losses and the reserve.
- To keep it going for a full 24 hours you would need about 7,331 Wh of rated capacity — 2.4× this station.
- Start-up: the incandescent Christmas tree lights (500 bulbs) asks for 204 W at switch-on against this station's 6,000 W peak — comfortable.
Buy the Bluetti AC300 + B300
Where to buy
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What changes the answer
| If instead… | Typical runtime | Change |
|---|---|---|
| The pack is two years old | 9 h 15 min | -8% |
| The pack is five years old | 8 h 3 min | -20% |
| It is −10 °C outside | 8 h 33 min | -15% |
| You run it flat, no reserve | 11 h 10 min | +11% |
| You keep 20% back | 8 h 56 min | -11% |
If you need it to run longer
Nothing in this catalogue runs incandescent Christmas tree lights (500 bulbs) for twice as long as the Bluetti AC300 + B300. Either it is already near the top of the range, or this appliance is beyond what portable batteries do well — see the incandescent Christmas tree lights (500 bulbs) page for the full ranking.
Smaller options that still work
| Station | Wh | Typical | Weight | Indicative price |
|---|---|---|---|---|
| Goal Zero Yeti 3000X | 3,032 | 9 h 32 min | 31.7 kg | — / $3,000 |
| Jackery Explorer 3000 Pro | 3,024 | 9 h 31 min | 29 kg | — / $2,499 |
| Bluetti Apex 300 | 2,764 | 9 h 8 min | 37 kg | £1,799 / $1,699 |
| Dabbsson DBS2300 | 2,330 | 7 h 48 min | 25 kg | £1,499 / $1,599 |
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