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BLUETTI · Expansion Battery
BLUETTI B300S
Discontinued or legacy model
Support/history only · discontinued · Non-promotional record
Shopping market: United States Prices and buying links shown here apply to this market.
Discontinued · current price not offered
Buying unavailable in United States
Good for
- Add more battery capacity for longer trips, work sessions or backup
- Add 3,072 Wh of documented battery storage to a compatible system
- Keep using the compatible power station you already have while adding stored energy
- Designed as a system-expansion battery rather than a stand-alone AC power station
- Match the exact receiving station and required battery connection before buying
Selected configuration: B300S | 3072Wh Expansion Battery
Exact model / SKU
B300S-UN-GY-BL-SPFUS · 44701260415195
OWNER SUPPORT · NON-PROMOTIONAL
Historical compatibility records
BLUETTI AC500 + B300S · discontinued · conditional compatibility · Manufacturer evidence
Full Specs
Specifications apply to the stated market and configuration. Expanded-system figures require the named additional equipment.
- Capacity
- 3,072 Wh single batteryBLUETTI B300S US exact specification
Battery
- Capacity
- 3,072Wh (51.2V, 60Ah)BLUETTI source ↗ · reviewed 2026-09-24
- Cell Chemistry
- LiFePO4 (Lithium Iron Phosphate)BLUETTI source ↗ · reviewed 2026-09-24
- Life Cycles
- 3,500+ Cycles to 80% Original CapacityBLUETTI source ↗ · reviewed 2026-09-24
Outputs
- DC Outlets
- 1 x 12V/10A (Car Outlet) *All regulated.BLUETTI source ↗ · reviewed 2026-09-24
- USB-A Port
- 1 x 18WBLUETTI source ↗ · reviewed 2026-09-24
- USB-C Port
- 1 x 100W Max.BLUETTI source ↗ · reviewed 2026-09-24
Charging
- AC Input
- 500W Max.BLUETTI source ↗ · reviewed 2026-09-24
- Car Input
- 12/24V from Cigarette Lighter PortBLUETTI source ↗ · reviewed 2026-09-24
- Cold-weather charging condition
- Normal charging is 0–40°C. The manual permits charging down to −20°C through self-heating when connected to a T500 or mains-powered AC500.Reviewed manual scope: 1–20 (complete English manual)BLUETTI source ↗ · reviewed 2026-09-24
- Solar input limits
- 12–60 V open-circuit and operating voltage, 10 A maximum, 500 W maximum; use the documented MC4 cable.Reviewed manual scope: 1–20 (complete English manual)BLUETTI source ↗ · reviewed 2026-09-24
- Maximum Input
- 1,000W, with D050S DC Charging EnhancerBLUETTI source ↗ · reviewed 2026-09-24
- Simultaneous Recharge & Discharge
- YesBLUETTI source ↗ · reviewed 2026-09-24
- Solar Input
- 500W Max., VOC 12-60VDC, 10ABLUETTI source ↗ · reviewed 2026-09-24
Configurations & compatibility
- 240V Split Phase Bonding
- Only as part of a supported AC500 split-phase system; the B300S battery has no AC inverter.BLUETTI source ↗ · reviewed 2026-09-24
- AC500 output depends on battery count
- One B300S with AC500 supports 4,500 W and 3,072 Wh. Two support 5,000 W and 6,144 Wh; six provide 18,432 Wh. Reaching 5,000 W requires a battery connection on each AC500 expansion port.Reviewed manual scope: 1–20 (complete English manual)BLUETTI source ↗ · reviewed 2026-09-24
- Optional equipment
- AC adapter, vehicle and lead-acid charging cables, D050S enhancer kit, USB-C cable and 12 V DC5521 cable are separately purchased accessories.Reviewed manual scope: 1–20 (complete English manual)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 Charge Controller, BMS, etc.BLUETTI source ↗ · reviewed 2026-09-24
- App and firmware
- View battery status and update firmware through a connected AC500 and the BLUETTI app.Reviewed manual scope: 1–20 (complete English manual)BLUETTI source ↗ · reviewed 2026-09-24
- Operating Temperature
- -4℉-104℉ (-20℃-40℃)BLUETTI source ↗ · reviewed 2026-09-24
- Storage Temperature
- -4℉-104℉ (-20℃-40℃)BLUETTI source ↗ · reviewed 2026-09-24
- Weight
- 83.8lbs (38kg)BLUETTI source ↗ · reviewed 2026-09-24
Included equipment
- Standard package in the manual
- B300S, 80 cm P150D expansion cable, 70 cm MC4-to-XT90 DC input cable, user manual and warranty card. Verify the seller's current package.Reviewed manual scope: 1–20 (complete English manual)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
Manuals & downloads
Questions about this product
FAQs
- Can it charge while supplying power?
- Yes, the manual supports pass-through charging within the battery's operating limits.Reviewed manual scope: 1–20 (complete English manual)BLUETTI source ↗ · reviewed 2026-09-24
Purchase details
Manufacturer product reference ↗
Seller prices, financing, promotions, shipping and returns are set by the merchant. Manufacturer warranties follow the exact product and purchase terms.
Information still to verify
- No exact-model accessory connection has been verified in this market yet.
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