Bluetti B300K Expansion Battery | 2,764.8Wh
SKU: 12508683772

Bluetti B300K Expansion Battery | 2,764.8Wh

Sale price$809.55 Regular price$899.50
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Description

Bluetti B300K Expansion Battery | 2,764.8WhPower That Keeps Up With You B300K Expansion Battery Sick of half baked power setups letting you down? The B300K Expansion Battery smashes that worry out the park with 2,764. 8Wh of serious juice and over 4,000 life cycles built to go the distance. Whether you're off grid, stuck in a blackout, or just want the backup muscle to keep the beers cold and the lights on, this little rippers got your back. Built tough with automotive grade LiFePO cells and

Power That Keeps Up With You – B300K Expansion Battery

Sick of half-baked power setups letting you down?

The B300K Expansion Battery smashes that worry out the park with 2,764.8Wh of serious juice and over 4,000 life cycles built to go the distance.

Whether you're off-grid, stuck in a blackout, or just want the backup muscle to keep the beers cold and the lights on, this little ripper’s got your back.

Built tough with automotive-grade LiFePO₄ cells and smart BMS tech, it charges fast and hooks up easily to plenty of units including the AC200L, AC300, or AC500.


Built to Last and Built for Legends – Bluetti B300K Battery

Ever wished you could stack your power like you stack your beers? Now you can.

The Bluetti B300K Battery doesn't just sit there looking pretty – it’s a real workhorse, with a massive lifespan and smart expansion options to keep your adventures rolling.

You can mix and match it with B300, B300S models, and pile up enough power to last longer than your average camping trip.

Plus, with a solid aluminium shell and advanced AI battery management, it’s engineered to cop a flogging and still come back for more.

Click Add to Cart now and make dead batteries one less thing you’ll have to think about.

Add To Cart



Key Features

  • Massive 2,764.8Wh capacity for serious power needs
  • 4,000+ cycles for years of weekend getaways
  • Automotive-grade LiFePO₄ battery for rugged reliability
  • Fast charges up to 80% in 45 minutes with AC500
  • Standalone USB-A port to top up essentials
  • Expandable – link up to 16,588Wh with AC500
  • Safe as houses with smart AI-BMS tech and tough build
  • Comes with expansion cable and manual – ready to go

Bluetti B300K Specs

BATTERY INFO

  • Capacity: 2,764.8Wh (51.2V, 54Ah)
  • Type: LiFePO₄ (Lithium Iron Phosphate)
  • Life Cycles: 4,000+ Cycles to 80% Original Capacity

OUTPUT

  • USB-A Port: 12W Max., 5V / 2.4A


GENERAL

  • Weight: Approx. 29.5kg (65.04lbs)
  • Dimensions (L x W x D): 525 × 327 × 209mm (20.67 × 12.87 × 8.23in)
  • Charging Temperature: 0°C to 40°C (32°F to 104°F)
  • Discharging Temperature: -20°C to 40°C (-4°F to 104°F)
  • Storage Temperature:
  • – Up to 1 month: -20°C to 40°C (-4°F to 104°F)
  • – Up to 6 months: -20°C to 25°C (-4°F to 77°F)
  • Working Humidity: 5% to 95%RH
  • Charging Current: 60A Max. (Current may decrease outside specified temperatures)
  • Discharging Current: 70A Max.
  • Expansion Ports: 2 × 58.4VDC Max., 90A Max.
  • Warranty: 4 Years

What's Included

Everything you need is included with your purchase from True Gear

  • Bluetti B300K Expansion Battery
  • Short Battery Expansion Cable (For APEX 300 - CA90)
  • User Manual
  • Warranty Card
  • 4-Year Manufacturer Warranty

Download the Bluetti B300K manual

Looking for detailed information on the Bluetti B300K? Then check out the complete manual below.

Read Bluetti B300K reviews down below ↓


Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 12508683772

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A
Verified Purchase
Amazon Customer
West Palm Beach, US
★★★★★ 5
Works great! Gets hot fast & water in tank lasts
Style: Steam Mop
Works great! Gets hot fast and the max amount of water it takes goes a long way in my home. I can clean several rooms and still have half of the water still in the tank. Awesome, easy to use, effective and great value for the price.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 6, 2026
E
Verified Purchase
Elena Estrella
Alexandria, US
★★★★★ 5
Will buy again
Style: Steam Mop
I’m pretty impressed with this steam mop. It cleans great, leaving no streaks. It’s easy to handle with its decent sized griped handle. It’s durable and easy to use. It’s sleek and lightweight with a pretty long cord. I highly recommend.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 20, 2026
A
Verified Purchase
Amazon Customer
Charlottesville, US
★★★★★ 5
Great for price
Style: Steam Mop
Works well
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 6, 2026
K
Verified Purchase
Kelly M
Natrona Heights, US
★★★★★ 4
Needs a longer cord! But does the job well!
Style: Steam Mop
My only complaint is the cord is not long enough! I have to go around finding every outlet to plug it into to get my whole house clean.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 26, 2026
P
Verified Purchase
p1mkw
San Leandro, US
★★★★★ 3
You get what you pay for
Style: Steam Mop
It's just OK. It does get the job done, but poorly made and I don't expect it to last long. Unlike other steam mops I've had, this one leaves the floor wet. Plus the pad does not pick up any stuck-on gunk that the steam loosened. I had to go back and pick up a few pieces by hand. Instructions say to let the water tank air dry before storing, but the attached lid makes it hard to let air into the tank. In retrospect I should have spent a few dollars more and gotten a better unit.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 22, 2026

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