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BLUETTI B300S Expansion Battery product image
Batteries & storage

B300S Expansion Battery

BLUETTI

BLUETTI B300S is a 3,072Wh LiFePO4 expansion battery with temperature-adaptive charging support for the AC500 platform.

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Model details

Key information for this model.

Use the verified specifications below as a research starting point, then confirm the exact regional version on the manufacturer page before buying.

Capacity3,072Wh
ChemistryLiFePO4
Life cycles3,500+
Temperature featureTemperature Adaptive Function
USB-C output100W max
12V outlet12V / 10A
Dimensions520 × 320 × 263 mm
Weight38 kg
Best for

Where it fits.

BLUETTI AC500 storage expansion where cold-weather charging support and 3.07kWh modules are useful.

Watch for

Limits to check.

Confirm current U.S. availability and the exact cable when combining AC500 with older B300 hardware.

Compatibility

System fit.

BLUETTI AC500; documented AC500+B300 arrangements require the specified P150D-to-P090D cable

Warranty

Coverage note.

Verify current BLUETTI B300S warranty terms at purchase.

Next checks

Useful next steps for this model.

Move from model research into comparison, load planning and local installation help without starting again.

01

Official product information

Confirm the current regional model, specifications, included accessories and availability with the manufacturer.

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02

Compare alternatives

Put this model beside nearby options and compare capacity, power, charging, compatibility and other relevant differences.

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03

Estimate the storage you need.

Use the most relevant Melnti calculator to connect the product specification to the load or system requirement.

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04

Local help

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Related BLUETTI equipment

More models in this equipment family.

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Source & buying note

Confirm the exact regional model before buying.

Manufacturer pages, regional SKUs and specifications can change. Use the source links below to confirm the exact model and local version before placing an order.

Information checked: 2026-09-01

Market note: United States product/archive page

Official product: Open manufacturer page ↗