SKU: 12508683772

Bluetti B300K Expansion Battery | 2,764.8Wh

Sale price$809.55 Regular price$899.50
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Ships within 48 hours · Estimated delivery Jul 18 - Jul 23

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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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Anna-kay Murdock
Bozeman, US
★★★★★ 5
Lightweight
Style: SPF 30, Size: 5 Fl Oz (Pack of 1)
Very light weight. Great sunscreen. Keeps u moisturized
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 17, 2026
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kbvalentine
Draper, US
★★★★★ 5
Soaks in and lasts
Style: SPF 30, Size: 5 Fl Oz (Pack of 1)
We live in Florida and need strong sunscreen for any amount of time in the sun. I apply this lotion liberally before putting on my suit. It is NOT greasy and soaks in well and leaves no residue or smell. I can be in the water in the middle of the day for 3-4 hours before I need to reapply. I typically would begin to feel my skin start to burn after 2 hours but this sunscreen allowed me to tan without burning.
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Reviewed in the United States on August 1, 2024
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Verified Purchase
Sarah N.
Los Angeles, US
★★★★★ 4
Does its work
Style: SPF 30, Size: 5 Fl Oz (Pack of 1)
Is not bad. It does its work, but is too oily.
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Reviewed in the United States on September 3, 2025
M
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MacDaddy
Omaha, US
★★★★★ 5
Lightweight, doesn't run into my eyes
Style: SPF 30, Size: 5 Fl Oz (Pack of 1)
I really like this as an everyday sunscreen and for outdoor sports. It looks thick compared to the watery Kinesys (my other go-to sunscreen), but the Eucerin goes on light and stays put. Unlike Kinesys, it doesn't get into my eyes by the afternoon. I still prefer the K. brand for easy application to my hairy arms and legs, but the Eucerin 30 is perfect for face and neck. I also tried the SPF 50 version of this, and the spray-can version, but they don't go on very well, so I'm returning to this one.
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Reviewed in the United States on October 25, 2024
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Abbie
Massapequa, US
★★★★★ 5
Great for Sensitive Skin
Style: SPF 30, Size: 5 Fl Oz (Pack of 1)
I've been using greasy white, mineral sunscreens for years because the chemical sunscreens all made me break out in a rash--until I tried this one. It dries clear, is non-greasy, and goes on well. Note the relatively few inactive ingredients compared to other chemical sunscreens. Whatever ingredient irritated my skin is not in this one and I love it!
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Reviewed in the United States on October 30, 2023

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