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BLUETTI · Expansion battery

BLUETTI B300

Discontinued or legacy model

BLUETTI B300: 3,072 Wh expansion battery. Check the required station and connection cable.

Capacity: 3,072 Wh
Works with: AC70

Current price unavailable

Selected configuration: B300 Expansion Battery | 3072Wh

Exact model / SKU

B300-UN-GY-BL-SPFUS · 44696842207451

Manufacturer product page ↗Fit My Needs Current replacement ↓

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

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OWNER SUPPORT

Current replacement path

These are manufacturer-documented successors for this market. A successor is not automatically a drop-in replacement. Compare capacity, output, ports, cables, expansion batteries and RV integration before buying.

Full Specs

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

Capacity: 3,072 Wh single batteryBLUETTI B300 US exact specification

Battery

Capacity: 3,072Wh (51.2V, 60Ah)BLUETTI source ↗ · reviewed 2026-09-24
Life Cycles: 3500+ Cycles to 80% Original CapacityBLUETTI source ↗ · reviewed 2026-09-24
Type: LiFePO4 (Lithium Iron Phosphate)BLUETTI source ↗ · reviewed 2026-09-24

Outputs

12V DC Outlet*: 1 x 12V/10A (Car Outlet) *All Regulated.BLUETTI source ↗ · reviewed 2026-09-24
Independent battery outputs: 12 V/10 A vehicle socket, 18 W USB-A and 100 W USB-C. There is no built-in AC inverter.Reviewed manual scope: 1–18 (complete English manual; blank page 17 checked)BLUETTI source ↗ · reviewed 2026-09-24
USB-A Port: 1 x 18W USB-ABLUETTI source ↗ · reviewed 2026-09-24
USB-C Port: 1 x 100W Max.BLUETTI source ↗ · reviewed 2026-09-24

Charging

12V/24V Car Outlet (100W/200W): ≈ 30 or 15 HoursBLUETTI source ↗ · reviewed 2026-09-24
AC: ≈ 6.5~7 Hours at 500WBLUETTI source ↗ · reviewed 2026-09-24
AC Input: 500W Max.BLUETTI source ↗ · reviewed 2026-09-24
AC + Solar: ≈ 5 Hours at 700W (With prime sunshine, ideal orientation and low temperature)BLUETTI source ↗ · reviewed 2026-09-24
Car Input: 12/24V from Cigarette Lighter Port; requires the optional D050S DC Charging Enhancer (manufacturer FAQ).BLUETTI source ↗ · reviewed 2026-09-24
Dual AC: ≈ 5 Hours at 700W (Extra adapter REQUIRED)BLUETTI source ↗ · reviewed 2026-09-24
Charging equipment and limits: The optional T500 adapter supplies up to 500 W. The separate solar input accepts 12–60 V, 10 A and 200 W. The optional D050S provides another documented charging route; solar or vehicle compatibility depends on the selected cable and input.Reviewed manual scope: 1–18 (complete English manual; blank page 17 checked)BLUETTI source ↗ · reviewed 2026-09-24
Charging-time assumptions: The manual estimates 6.6–7.1 hours with a 500 W T500 adapter and 4.9–5.4 hours using the documented 700 W dual-input setup. Actual charging slows with temperature and state of charge.Reviewed manual scope: 1–18 (complete English manual; blank page 17 checked)BLUETTI source ↗ · reviewed 2026-09-24
Max Input: 700W, With AC Adatper + Solar Input SimultaneouslyBLUETTI source ↗ · reviewed 2026-09-24
Solar: ≈ 15.5~16 Hours at 200W (With prime sunshine, ideal orientation and low temperature)BLUETTI source ↗ · reviewed 2026-09-24
Solar Input: 200W Max., VOC 12-60VDC, 10ABLUETTI source ↗ · reviewed 2026-09-24
Solar + Solar: ≈ 5 Hours at 700W (D050S DC Charging Enhancer REQUIRED)BLUETTI source ↗ · reviewed 2026-09-24

Configurations & compatibility

240V Split Phase Bonding: Only as part of a supported AC300 split-phase system; the B300 battery has no AC inverter.BLUETTI source ↗ · reviewed 2026-09-24
Expansion configurations: AC300 supports up to four B300 batteries (12,288 Wh total). AC200MAX supports up to two B300 batteries (8,192 Wh including the station).BLUETTI source ↗ · reviewed 2026-09-24
Native expansion configurations: Up to four B300 batteries with AC300 provide 12,288 Wh. AC200MAX supports two B300 batteries for 8,192 Wh total. These extra batteries increase storage; they do not independently provide AC output.Reviewed manual scope: 1–18 (complete English manual; blank page 17 checked)BLUETTI source ↗ · reviewed 2026-09-24

Dimensions & operation

Dimensions (LxWxD): 20.5 x 12.5 x 10.5in ( 52 x 32 x 26.6cm)BLUETTI source ↗ · reviewed 2026-09-24
Management System: MPPT Controller, BMS, etc.BLUETTI source ↗ · reviewed 2026-09-24
Size and operating limits: 36.1 kg; 520 × 320 × 266 mm. Charge at 0–40°C; discharge at −20–40°C. App status is available through the connected AC300 or AC200MAX.Reviewed manual scope: 1–18 (complete English manual; blank page 17 checked)BLUETTI source ↗ · reviewed 2026-09-24
Operating Temperature: -4-104℉ (-20-40℃)BLUETTI source ↗ · reviewed 2026-09-24
Pass-through Charge: YesBLUETTI source ↗ · reviewed 2026-09-24
Storage Temperature: -4-104℉ (-20-40℃)BLUETTI source ↗ · reviewed 2026-09-24
Weight: 79.6lbs (36.1kg)BLUETTI source ↗ · reviewed 2026-09-24

Included equipment

Standard package: B300, expansion connection cable, MC4-to-XT90 solar cable, user manual, warranty card and quality-control certificate. Check legacy stock packages with the seller.Reviewed manual scope: 1–18 (complete English manual; blank page 17 checked)BLUETTI 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
Warranty: 48 MonthsManufacturer warranty; eligibility, registration requirements, exclusions and purchase-region terms apply.BLUETTI source ↗ · reviewed 2026-09-24

Verified compatible accessories

Manuals & downloads

Reviewed manufacturer user manual ↗

Questions about this product

FAQs

Can B300 work as a standalone UPS?: No. It has DC accessory outputs, but requires a compatible station for an AC backup system.BLUETTI source ↗ · reviewed 2026-09-24