Bluetti B300S Expansion Battery 3072Wh (Only Works With AC500)

Take an EXTRA $70 OFF! Add to cart to get an instant discount.
Sale Ends in




Learn More»
In stock, dispatch 1 - 2 days Express Shipping Price Match Guarantee Customer Reviews

Product Description

Bluetti B300S Expansion Battery 3072Wh (Only Works With AC500), 4 Year Warranty.


  • Flexible Recharging. BLUETTI B300S takes up to 500W AC, solar, or car charging. Combine AC with solar or car input, you can top up B300S in less than 3.5-4 hours with a maximum of 1,000W* input rate. *The D050S DC charging enhancer is required.
  • Versatile Power Source. You can power your smartphones, laptops, fans, lights, refrigerators and more with specific outputs-100W USB-C, 12V/10A cigarette lighter, and 18W USB-A.
  • Responsive Even in Chilly Winter. Waking up electronics on a freezing day may be time-consuming. But with the Self-heating Function, B300S will automatically heat up to work actively and smoothly as usual.
  • Expandable Battery Pack. As the companion battery pack to AC500, B300S has a capacity of 3,072Wh and lasts for 3,500+ cycles to 80% of its original capacity. Hook up 6*B300S with AC500, you'll get a powerhouse with 18,432Wh, enough to get you through a severe power outage.
  • Never Run Out of Power. Suitable for various occasions. 



Brand Bluetti

GTIN 6970991291180

Warranty Period: 4 Years

Product Category Power Packs

Watt hours (Wh) 500

Dimensions 520 x 320 x 266mm

Weight (kg) 38


AC500 | Touchscreen Guide


B300S | How to connect B300S to AC500


Product Q&A

Ask Us a Question
  • Which BLUETTI power stations can work with B300?


    Except for AC300, an additional accessory is required for each station.

    AC200P: P090D to XT90 cable

    EB150: P090D to DC7909 cable

    EP500Pro: P090D to MC4 cable

  • Can I use 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. 

  • How many B300 can I connect to AC300 or AC200MAX?

    AC200MAX: Up to 2 B300 for 8,192Wh capacity.

  • Does 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.

  • Can I use B300 alone as a UPS?


  • What is the maximum input charging power of the BLUETTI B300?

    700W Max. with optional D050S DC Charging Enhancer*

    * Sold separately

  • Can I use car cigaretter lighter or lead-acid battery to charge B300?

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

  • Can I use third-party 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. 

  • Can it charge and discharge at the same time?


  • Can I use or charge 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.

  • How long can it run my device?

    Running time = Battery capacity x DoD x 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 x 90% x 90% ÷ 100W ≈ 25hrs

    Note: The above data is for reference ONLY.

  • Is B300 waterproof?

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

  • Is it possible to replace the built-in battery?

    No. If the battery pack is faulty or even dead, please contact BLUETTI Customer Service.

  • I'd like more tutorial videos on the AC300 and B300 combo.

    Sure, please follow BLUETTI Support onYouTube 


For details relating to this product's warranty CLICK HERE


    For details relating to our delivery process CLICK HERE

Best Sellers From This Category:

Cromtech 2400w Inverter Generator

Cromtech 2400w Inverter Generator

343 Reviews

$949 RRP: $1,168 Save: $219

Briggs & Stratton 6500w Inverter Generator

Briggs & Stratton 6500w Inverter Generator

56 Reviews

$3,599 RRP: $3,999 Save: $400

Yamaha 2000w Inverter Generator

Yamaha 2000w Inverter Generator

359 Reviews

$1,595 RRP: $2,349 Save: $754

Yamaha 2400w Inverter Generator

Yamaha 2400w Inverter Generator

317 Reviews

$2,580 RRP: $2,990 Save: $410