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BLUETTI B300K Expansion Battery, 2764.8Wh LiFePO4 Battery Pack for Power Station AC200L AC300 AC500 AC200MAX, Extra Battery for Home, Emergency, Road Trip

  • Based on 155 reviews
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Availability: In Stock.
Fulfilled by Bluetti

Arrives Feb 8 – Feb 9
Order within 22 hours and 42 minutes
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Style: 3072Wh Extra Battery B300


Features

  • [Backward and Forward Compatibility] - Seamlessly works with past and future BLUETTI power stations featuring an expansion port, including AC200L, AC200MAX, AC300, AC500, and AC200PL. Ready for what's next.
  • [Next-Generation Cells] - Equipped with advanced cells that provide at least 4,000 cycles to 80% capacity, offering a 15% boost in lifespan. Plus, they perform even better at high temperatures.
  • [Next-Gen Design Architecture 2.0] - The B300K expansion battery pack's wireless internal design minimizes failure risk and maximizes space efficiency, resulting in a more compact, portable product.
  • [Built-In USB Charging Port] - It's like having a massive power bank with a USB port, ready for those "just-in-case" moments. Connect it to any compatible BLUETTI power station for added versatility.
  • [What You Get] - BLUETTI B300K expansion battery, P090A battery expansion cable for power station AC200L AC300 AC200MAX and user manual.

Brand: BLUETTI


Connectivity Technology: USB


Connector Type: usb-a,usb-c


Compatible Devices: Solar, Laptops, Cellular Phones


Compatible Phone Models: BLUETTI AC300, BLUETTI AC500, BLUETTI AC200MAX, BLUETTI AC200P, BLUETTI EB240, BLUETTI EP500Pro


Included Components: B300K battery, P090A battery expansion cable


Special Feature: electricitygenerator


Color: 120V Single Phase


Mounting Type: Tabletop Mount


Amperage: 10 Amps


Manufacturer: ‎BLUETTI


Part Number: ‎B300K


Item Weight: ‎65 pounds


Product Dimensions: ‎20.47 x 12.6 x 10.31 inches


Item model number: ‎B300K


Batteries: ‎1 Lithium Ion batteries required. (included)


Size: ‎3072Wh


Color: ‎120V Single Phase


Style: ‎BLUETTI B300K


Material: ‎Metal


Power Source: ‎Solar Powered


Voltage: ‎120 Volts (AC)


Wattage: ‎500 watts


Horsepower: ‎0.13


Maximum Power: ‎100 Watts


Item Package Quantity: ‎1


Mounting Type: ‎Tabletop Mount


Certification: ‎UL


Special Features: ‎electricitygenerator


Included Components: ‎B300K battery, P090A battery expansion cable


Batteries Included?: ‎Yes


Batteries Required?: ‎No


Battery Cell Type: ‎Lithium


Warranty Description: ‎4-year Warranty


Date First Available: February 20, 2022


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Feb 8 – Feb 9

This item is non-returnable:

Non-returnable. Transportation of this item is subject to hazardous materials regulation

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Excellent expansion of solar power.
The media could not be loaded. Recently bought this Bluetti B300K to exoand my AC200Max. It over doubles the power of the AC200Max. It comes with the cable to connect it. Easy to hook up. The quality of build and materials is great! It charges only through beung plugged into your Bluetti solar generator that you plan to expand the battery power of. Once hooked up, you can charge them with solar panels, plug into an outlet. The B300K comes with only one USB-A type USB input. The power button must be held down for about 3 seconds to turn on. The lights are bright. It has 4 lights to represent the batter power of it. Each representing 20% of the power. And the power button lights up. This battery has a lifecycle of up to 3,500 charges from 0 to 100. After that, the battery will deplete 20%. Meaning you CAN STILL USE IT afte the 3,500 charges. And charge it from 0 to 80% of the battery's power for a long time. The functionality is easy and nice! The B300K weighs around 65lbs. But is easy to move around. The handles are sturdy. You can also see the battery percentage with the Bluetti app. And control several different Bluetti generator models with it. ... show more
Reviewed in the United States on December 31, 2024 by Rezivor Rezivor

  • Excellent addition to my setup
I bought this B300K because my electrical needs have begun to strain my AC200Max, which I have had to charge every day. Living in the Desert Southwest, we are approaching more cloudy days, meaning charging the AC200M will be more challenging, and my needs have only increased. I have been a Bluetti fan since my last solar battery, an orange one whose name starts with “J”, failed on so many levels, including two panels that completely stopped working after ONE. YEAR. I had a problem with my AC200M when it first came out; their customer service is exceptional, and the problem resolved (by exchanging the defective unit immediately) without complaint or delay. This B300K is plug-and-play, meaning all I had to do was plug it into my AC200M with the heavy cable provided, and presto, green lights! Because I was already charging, I did not even have to push the START button; it starts immediately when connected to solar. After a couple of days, the power in the two units balanced (automatically) and I no longer have to charge every day; I have much more available power in the setup. I have no reason to buy any solar battery or accessories from any other company. Well done, Bluetti. Very well done. ... show more
Reviewed in the United States on November 5, 2024 by James W

  • totally worth it
listen solar isn’t cheap but if you want years of reliable energy free energy and you want the best the bluetti is the way to go , i have this battery and 3 others for my AC 300 bluetti thats 12,000 wt of power bring on the power outages the last storm we had power was out for four days you dont know how spoiled you are until the power is gone it was so hot miserable couldn’t sleep couldn’t shower , we lot’s months of food storage in the deep freezer and everything in the frig lots of expensive meats and fruit “never again “ my job is to protect my family and to see that everyone is comfortable and happy,this is the best solar company on the market ,, patriot there ok not bad , jackery there pretty good to , but bluetti is the best the quality of the craftsmanship is so so good my only criticism for bluetti they really need to work on there customer support now dont get me wrong there not to bad but without going into to much detail about that im not going to say anything bad about bluetti because they were pretty helpful but it did take longer then usual to get that help ,,, but let me tell you totally worth the money even though they are a little expensive but in the long run totally worth it you will appreciate it way more once the power gos out and it hot and miserable or cold and miserable cant shower and you have to eat cold food or just junk well goodluck its never ever going to happen to my family again ,,, thank you bluetti ... show more
Reviewed in the United States on October 20, 2023 by Terry hoskins

  • Nice addition
Seems to be a great addition to my system.
Reviewed in the United States on January 20, 2025 by Ron Cameron

  • Enabled portable air conditioner after the hurricane
My AC200max did wonderful things, CPAP, lights, fans and the fridge for ~ a day. Mama wanted Cold Air too. This(B300) added the capacity for a small air conditioner.we can keep it comfortable for 2.5 days without recharging. I have portable solar panels that let me recharge it all. You will want at least a hand truck and maybe a cart. Plan for access to the back of the stack. I've got the quietest gen-set in the neighborhood, makes sleeping with open windows a lot more pleasant. ... show more
Reviewed in the United States on September 14, 2024 by Michael Pelleter

  • Marvelous
This battery along with the power station has worked miracles especially right now with all these fires going on i lost power and managed to keep my essentials turned on.
Reviewed in the United States on January 11, 2025 by Amazon Customer

  • High Quality, High Value!
An AC300 and a couple of these Battery is all you should need to get you through a day or so power outage.
Reviewed in the United States on September 25, 2024 by krpm44

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