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BLUETTI · Expansion battery

BLUETTI B300S

Discontinued or legacy model

BLUETTI B300S: 3,072 Wh expansion battery. Check the required station and connection cable.

Capacity: 3,072 Wh

Current price unavailable

Selected configuration: B300S | 3072Wh Expansion Battery

Exact model / SKU

B300S-UN-GY-BL-SPFUS · 44701260415195

Manufacturer product page ↗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

Heeler RV may earn a commission from qualifying purchases through marked seller links. As an Amazon Associate I earn from qualifying purchases.

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

Verified compatible accessories

Manuals & downloads

Reviewed manufacturer user manual ↗

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