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BLUETTI · Expansion battery

BLUETTI B300K (AC200L/AC300 connector)

Current model

BLUETTI B300K (AC200L/AC300 connector): 2,764.8 Wh expansion battery. Check the required station and connection cable.

Capacity: 2,764.8 Wh
Works with: AC300 + B300K, AC200L

Sale 1,099 USD · Regular 1,199 USD

Selected configuration: Default Title

Exact model / SKU

B300K-UN-GY-BL-SPFUS-00 · 45943077208283

Check current price ↗Fit My Needs Full Specs ↓

Check current USD price and availability at BLUETTI. Merchant checkout confirms the selected configuration.

Seller prices, financing, promotions, shipping and returns are set by the merchant. Manufacturer warranties follow the exact product and purchase terms.

Facts reviewed 2026-09-24

Information still to verify

A matched manual or download has not yet been verified for this market.
The complete box contents for the selected configuration have not yet been verified. Confirm included cables and adapters with the seller.

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Full Specs

Specifications apply to the stated market and configuration. Expanded-system figures require the named additional equipment.

Capacity: 2,764.8 Wh single batteryBLUETTI B300K (AC200L/AC300 connector) US exact specification

Overview & limitations

Purpose: A B300K battery module for expanding a compatible BLUETTI system. Select the connector package for the receiving station.BLUETTI source ↗ · reviewed 2026-09-24

Battery

Single-battery capacity: 2,764.8 Wh; 51.2 V, 54 AhBLUETTI source ↗ · reviewed 2026-09-24
Battery chemistry: LiFePO4BLUETTI source ↗ · reviewed 2026-09-24
Cycle-life review: Current manufacturer pages publish different cycle counts. A matched revision and end-capacity condition are required before comparing the cycle-life rating.BLUETTI source ↗ · reviewed 2026-09-24

Outputs

USB output: USB-A: 5 V, 2.4 A / 12 W maximum.BLUETTI source ↗ · reviewed 2026-09-24

Configurations & compatibility

Cable and station check: The B300K product listings name AC200L, AC200MAX, AC300 and AC500. The correct expansion cable is required; an Apex connector package must not be treated as an AC500 cable.BLUETTI source ↗ · reviewed 2026-09-24

Dimensions & operation

Dimensions: 52.5 × 32.7 × 20.9 cmBLUETTI source ↗ · reviewed 2026-09-24
Weight: 29.5 kgBLUETTI source ↗ · reviewed 2026-09-24

Warranty & documentation

Regional manufacturer warranty policy: 48 months.Exact regional policy match; Complete relevant official page in web retrieval text; checksum identifies the saved retrieval capture, not raw manufacturer HTML; preserve purchase-date eligibility and exclusions.BLUETTI source ↗ · reviewed 2026-09-24
Manufacturer warranty eligibility: Coverage starts with the original purchase and requires valid purchase evidence. BLUETTI restricts the warranty to the purchase country; unauthorized sellers, misuse and normal wear are excluded. Check the linked policy for claims and extension conditions.Exact regional policy match; Complete relevant official page in web retrieval text; checksum identifies the saved retrieval capture, not raw manufacturer HTML; preserve purchase-date eligibility and exclusions.BLUETTI source ↗ · reviewed 2026-09-24

BLUETTI B300K (AC200L/AC300 connector)

Full Specs

Verified compatible accessories