How long will a Bluetti AC300 + B300 run LED Christmas tree lights (500 bulbs)?
About 1.8 days — 42 h 7 min typically, from 39 h 39 min in the worst case to 44 h 36 min at best. That assumes LED Christmas tree lights (500 bulbs) pulling 35 W continuously, plus the station's 18 W AC mains socket overhead — 53 W in total out of 2,233 usable watt-hours.
Note how much of that draw is the station rather than the appliance: 34% 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 × LED Christmas tree lights (500 bulbs), UK 230 V | 53 W | 39 h 39 min | 42 h 7 min | 44 h 36 min |
| 2 × LED Christmas tree lights (500 bulbs), UK 230 V | 88 W | 23 h 53 min | 25 h 22 min | 26 h 52 min |
| 1 × LED Christmas tree lights (500 bulbs), US 120 V | 53 W | 39 h 39 min | 42 h 7 min | 44 h 36 min |
- 5.3 nights of eight hours, or 1.76 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 1,750 Wh of rated capacity — which this station has.
- Start-up: the LED Christmas tree lights (500 bulbs) asks for 35 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 | 38 h 45 min | -8% |
| The pack is five years old | 33 h 42 min | -20% |
| It is −10 °C outside | 35 h 49 min | -15% |
| You run it flat, no reserve | 46 h 48 min | +11% |
| You keep 20% back | 37 h 26 min | -11% |
About a sixth of the same tree in old incandescent bulbs, and cool enough to touch.
If you need it to run longer
Nothing in this catalogue runs LED 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 LED 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 | 41 h 45 min | 31.7 kg | — / $3,000 |
| Jackery Explorer 3000 Pro | 3,024 | 41 h 38 min | 29 kg | — / $2,499 |
| Bluetti Apex 300 | 2,764 | 39 h 23 min | 37 kg | £1,799 / $1,699 |
| Dabbsson DBS2300 | 2,330 | 35 h 17 min | 25 kg | £1,499 / $1,599 |
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