Thank you for supporting our product. 
 
No, the Nebula P1 speaker has a built-in battery, while the projector does not and requires a power connection to operate.
A built-in battery would increase the device&#39;s size and thermal load, potentially affecting performance stability while also limiting weight reduction.
The Anker Solix C300 can charge this product, supporting 3 hours of uninterrupted viewing at full power.
 
If you need additional assistance, please contact our customer support team.

Does it have a built-in battery

Nebula

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