BLUETTI B300 Expansion Battery | 3,072Wh


Regular price
Price: $1,599.00
Regular price
List Price: $1,999.00
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Price: $1,599.00
You save: $400.00 (20%)
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Flexible Recharging

You can recharge BLUETTI B300 quickly with 200W Max. solar input thanks to the built-in MPPT. Besides, it also supports AC, car, and lead-acid battery charging. The car and lead-acid battery charging need a D050S.
bluetti b300 charging

Versatile Power Source

You can power your smartphones, laptops, fans, lights, refrigerators, microwave ovens, and so on with specific output port - the 100W USB-C, 12V/10A cigarette lighter, and 18W USB-A output ports.
bluetti b300 outlets

Expandable Battery Pack

B300 has 3,072Wh capacity and over 3,500 life cycles with the LifePO4 battery cells, offering up to 80% of original capacity. Moreover, it will double, triple, even quadruple the total capacity with BLUETTI AC200MAX, AC200P, or AC300 series.
bluetti b300 expansion battery

Home Backup and Trip Power Bank

Whether in a family gathering or camping trip, B300 will serve as your backup power supply or power bank. It powers your home and camping necessities well, and all you need to do is enjoy the good times.
bluetti b300 home backup and trip power bank


    Capacity: 3,072Wh (51.2V, 60Ah)
    Type: LiFePO4 (Lithium Iron Phosphate)
    Life Cycles: 3,500+ Cycles to 80% Original Capacity
    Shelf-life: Recharge to 80% Every 3-6 Months
    Management System: MPPT Controller, BMS, etc.


    USB-C Port: 1 x 100W Max.
    USB-A Port: 1 x 18W USB-A
    12V DC Outlets: 1 x 12V/10A (Car Outlet)


    AC Adapter Input: 500W Max.
    Solar Input: 200W Max., VOC 12-60VDC, 10A
    Car Input: 12/24V from Cigarette Lighter Port
    Maximum Input: 700W, With AC Adatper + Solar Input Simultaneously


    AC Adapter: 6.5~7 Hours at 500W
    Solar: 15.5~16 Hours at 200W

    (With prime sunshine, ideal orientation and low temperature)

    12V/24V Car Outlet (100W/200W): 30 or 15 Hours
    AC + Solar: 5 Hours at 700W

    (With prime sunshine, ideal orientation and low temperature)

    Solar + Solar: 5 Hours at 700W (D050S DC Charging Enhancer REQUIRED)
    Dual AC: 5 Hours at 700W (Extra adapter REQUIRED)


    240V Split Phase Bonding: Yes, work with AC300
    Pass-through Charging: Yes
    Weight: 48lbs 
    Dimensions (LxWxD): 20.5 x 12.5 x 10.5in 
    Operating Temperature: -4-104℉ 
    Storage Temperature: -4-104℉ 
    Certifications: UL2743, UKCA, RCM, PSE, FCC, CE


    1. Which BLUETTI Power Stations can work with B300?

    AC300/AC200/AC200P/AC200MAX/EB150/EB240/EP500Pro. Except for AC300, an additional accessory is required for each station.
    AC200/AC200P: P090D to XT90 cable
    EB150/EB240: P090D to DC7909 cable
    EP500Pro: P090D TO MC4 

    2. Can I use the BLUETTI B300 expansion battery alone?

    Yes. It comes with a 100W USB-C, a USB-A, and a 12V car socket, providing power for phones, laptops, car refrigerators, etc.

    3. How many B300's can I connect to the AC300 or the AC200MAX?

    AC300: Up to 4 B300 for 12,288Wh capacity.
    AC200MAX: Up to 2 B300 for 8,192Wh capacity.

    4. Does the B300 support app control?

    Connect it to the AC300, pair them with BLUETTI App, and you can control the system at any time from anywhere.

    5. Can I use the B300 alone as a UPS?


    6. What is the maximum input charging power of the BLUETTI B300?

    700W Max. with optional D050S DC Charging Enhancer*
    * Sold separately

    7. Can I use a car cigarette lighter or acid-lead battery to charge the B300?

    Yes, BLUETTI D050S DC Charging Enhancer* is required.
    * Sold separately

    8. Can I use third part solar panels to charge the BLUETTI B300?

    Yes, if the solar panels' specs fall in:
    1) Total Voltage: 12-60V
    2) Total Power: 200W Max.
    3) Include MC4 connectors.

    9. Can it charge and discharge at the sametime?


    10. Can I use or charge the B300 in sub-zero temperatures?

    Temperature ranges for B300 are:
    Charge: 0-40℃ (32-104℉);
    Discharge: -20-40℃ (-4-104℉);
    Storage: -20-40℃ (-4-104℉).
    Technically, it can power electrical devices under such situations, but please avoid charging it.

    11. How long can it run my device?

    Running time = Battery capacity × DoD × η ÷ Device rated power DoD refers to Depth of Discharge and η is local inverter efficiency.
    For B300, both DoD and η are 90%. If you run a 100W light bulb with it, the running time will be:
    3,072Wh × 90% × 90% ÷ 100W ≈ 25hrs
    Note: The above data is for reference ONLY.

    12. Is the B300 waterproof?

    No. Also, please do NOT store it in a humid environment for a long time.

    13. Is it possible to replace the built-in battery?

    No. If the battery pack is faulty or even dead, please contact BLUETTI Customer Service. 1 800-200-2980


    48 months


    BLUETTI B300 User Manual


    Order Confirmation

    As soon as you place your order, you will receive an order confirmation e-mail. This means that we have received your order in our system and pre-authorized your choice of payment for the purchase.

    If your item happens to be on back-order or unavailable, we will void the pre-authorization and reach out to you via e-mail. If your item(s) are available for immediate shipment (within 5 business days), we will process the charges and submit the order for shipment.

    Order Shipment

    Your order will ship within 5 business days. We will send you tracking information within 24 hours of your order leaving the warehouse to the e-mail address you provided when checking out. You should receive your item(s) between 5-10 business days.

    We offer free shipping on all orders within the contiguous United States via FED EX, UPS, DHL and USPS.

    No shipping outside the contiguous United States.

    If you have any questions feel free to give us a call or email us at


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    Customer Reviews

    Based on 1 review
    Gary W.
    Great Product, Great Price!

    We are please to add to our Bluetti collection of quality products. Our Cabin and Farm are all powered with Bluetti systems.