BLUETTI B300K Expansion Battery
2,764.8Wh LiFePO₄ battery · Listed for AC200L, AC200MAX, AC300, AC500 and Apex 300. Check the local product page, cable bundle, warranty and freight restrictions.
Purpose
Expands a compatible BLUETTI system without replacing the main power station. (Expansion battery).
Key facts
2,764.8Wh LiFePO₄ battery; Listed for AC200L, AC200MAX, AC300, AC500 and Apex 300.
Works with
BLUETTI AC200L and AC200MAX; BLUETTI AC300 and AC500; BLUETTI Apex 300
Connection
Uses the specified BLUETTI battery expansion cable; the required cable can differ by host station.
Regional and installation notes
Check the local product page, cable bundle, warranty and freight restrictions. Installation: User-connectable only in a combination shown in the official compatibility table or manual..
Practical caution
The same brand is not enough: cable type and permitted battery count depend on the host station.
Source
Source: BLUETTI B300K product page (bluettipower.com); checked 2026-08-23.
Buying checks for the United Kingdom
Exact host system: Verify the precise station, battery, vehicle or home system named by the manufacturer. A shared brand or connector does not prove compatibility. Complete connection path: Check every cable, fuse, inlet, outlet and adapter required between the source, component and load—including what is actually included. Regional electrical version: Match voltage, frequency, socket, certification and model suffix to the destination. Home-wiring products are especially region-specific. Installation boundary: Confirm whether it is truly user-connectable or needs a qualified automotive or electrical installer, permits and local inspection.
Regional note
Check the local product page, cable bundle, warranty and freight restrictions.
No verified UK buying option yet
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UK status: commerce closed. No verified retailer, price, stock, warranty or affiliate offer is active until final technical and native editorial review.