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Bluetti B300K Expansion Battery | 2,764.8Wh

by Bluetti
Save $490.00
Original Price $2,699.00
Current Price $2,209.00 + Free Shipping
  • 4 Year Warranty
  • Lifetime Support
  • 100% Satisfaction 90 Day Free Trial

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Front view of the Bluetti B300K Expansion Battery, ideal for portable power solutions

Make Outdoor Living Easy with the B300K Bluetti Expansion Battery

Craving extra juice? The B300K Bluetti Expansion Battery has you covered with 2,764.8Wh of capacity, perfect for keeping everything from your portable fridge to essential gadgets powered up. With over 4,000 life cycles, you can count on it for years of adventure and reliable backup during power outages. Built tough and efficient, it’s the power solution that matches your lifestyle.

Click the Add to Cart button and keep your gear running smoothly.

Dependable, High-Capacity Power with the B300K Expansion Battery

The B300K isn’t just about capacity; it’s about dependability. Equipped with automotive-grade LiFePO₄ battery cells, it stands up to heavy use and ensures safe operation. Unlike standard batteries, this powerhouse charges to 80% in just 45 minutes when paired with the AC300 or AC500, so you don’t waste precious time waiting. It also acts as a stand-alone charging hub with a convenient USB-A port, perfect for small devices when you’re out exploring.

B300K Expansion Battery Key Features

  • 2,764.8Wh high capacity to keep essential gear running longer.
  • 4,000+ life cycles, offering years of consistent power.
  • Advanced LiFePO₄ technology for enhanced safety and efficiency.
  • Charges to 80% in just 45 minutes with AC300/AC500 pairing.
  • Built-in USB-A port for quick charging of small devices.
  • Compatible with top Bluetti models: AC200L, AC200MAX, AC300, AC500.
  • Sturdy build with a cooling fan to handle tough outdoor and indoor use.
  • 3+1 years extended warranty, ensuring reliable coverage and peace of mind.

Bluetti B300K Tech Specs

Battery Info

  • Model: B300K
  • Battery Capacity: 2,764.8Wh (51.2V, 54Ah)
  • Battery Type: LiFePO₄ (Lithium Iron Phosphate)
  • Life Cycles: 4,000+ Cycles to 80% Original Capacity

Output

  • USB-A: 12W Max., 5V / 2.4A

General Info

  • Net Weight: Approx. 29.5kg
  • Dimensions (L × W × H): 525 × 327 × 209mm
  • 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.
  • 2 × Expansion Port: 58.4VDC Max., 90A Max.
  • Warranty: 4 Years

B300K Expansion Battery Included Items

1 x B300K Expansion Battery
1 x Battery Expansion Cable (P090A)
1 x User Manual

Order Confirmation and Dispatch

Got your eye on something? Awesome! Once you've placed your order, we’ll get to work. We’re usually able to fulfill orders within 1 business day, however, this does vary depending on the warehouse so please allow up to 3 business days. Once it’s on its way, we'll ping you with a shipping confirmation email within 24 hours of dispatch and a tracking number.

Got questions or need an update? No problem! Reach out to us at 1300 241 251 or support@compactco.com.au.

General Delivery Timeframes

While delivery timeframes vary depending on your location and item ordered, you can generally expect your package to arrive within the timeframe below.

  • 2-5 Business Days - Adelaide, Brisbane, Canberra, Melbourne Sydney Metro
  • 3-8 Business Days - Other Major Cities & NSW, QLD, SA, VIC Regional
  • 7-12 Working Days - NT, TAS, WA, QLD Remote
Free Delivery

We've got great news for our Aussie customers – shipping is on us! That’s right, FREE shipping on most orders, making shopping with us even sweeter.

Some very remote regions of Australia might not be possible with our couriers, go ahead and place your order - and if it's flagged we'll be in touch.

Restricted Free Delivery Zones

We've got a big country, so for the below items we have a limited free delivery zone. The following are limited to certain areas:

  • North Sea Inflatables - free metro delivery 50km radius
  • Foldable Kayaks (Oru Kayaks and Terravent) - free to VIC, NSW, QLD and ACT

Still place your order as normal and we will be in touch straight away with the best shipping rate we can find - if it doesn't make sense then no harm done, we'll refund the order.

90 Day's Free and Easy Returns

If you're not absolutely smitten with your purchase? No stress! You've got 90 days to decide if it's a keeper. If not, sending it back is a cinch. Send it back to us and send us the bill for postage while you're at it! Love it or return it for FREE– it's that simple! Just make sure the item and the packaging are in tip-top shape.

In some cases, return delivery is over $200, in that case you will receive a $200 credit towards your shipping costs.

Other Terms and Conditions

If you miss the delivery, no worries! You may need to pick up your item(s) from the freight company's depot. We can arrange re-delivery to your home, but please note this will incur a small extra cost.

While we cannot pinpoint the exact time and date of delivery since it's out of our hands, you'll receive an email with tracking details. This way, you can contact the freight company directly for more accurate timing.

Please let us know if:

  • Someone will be available to sign for the delivery.
  • There's a safe spot to leave the item if no one will be home.
  • The address is a business location; we will need the business hours and the name of the building.
  • You notice any damage. If so, make a note when signing for the delivery or refuse to accept it. If you do accept delivery, immediately snap some photos of the damaged packaging or products with your smartphone or camera. If your item(s) arrive damaged, please send the photos to support@compactco.com.au and visit our returns page to lodge your return claim.

There you have it, everything you need to shop with confidence and a smile! 😊

7 Reasons to Shop with Compact Co.

From the first hello to the last goodbye, we'll make sure you're looked after and 100% satisfied with everything that you purchased. Here's why shopping with us is not only a smart choice but also a breeze!

___________________

#1 90 Day Trial - Free Returns on Us

Gave it a go, but your new gear’s just not the right fit? No worries! We’ve got your back with absolutely no hidden fees, and we’ll even cover your return shipping up to $200 (which is pretty much everything). Just make sure it’s in the same condition you received it, and we’ll handle the rest—easy as!

#2 Free Shipping Australia-Wide

Get your compact gear delivered for free, no matter where you are in Australia. We know you love a good deal, and free shipping makes it even sweeter!

Limitations: Foldable Kayaks

#3 Aussie Family Owned

We’re not some giant faceless company. Compact Co. is 100% Australian-owned and run by people who understand our great outdoors.

Have a question at 3 AM? No dramas! Our Aussie-based team is here to help you around the clock, so you’re never left hanging.

#5 Secure Checkout

Shop with peace of mind. Our checkout is SSL encrypted, ensuring your details are protected and confidential every step of the way. Easy, fast and 100% safe!

#6 5 Star Customer Support

Our customers reckon we’re pretty awesome! We pride ourselves on 5-star customer service, so you know you’re in good hands when you shop with us.

“Customer service was stellar, constant communication with the owner was a highlight. As a business owner, this level of engagement speaks volumes. Cheers to future business!”

#7 Giving Back – We Plant Trees

We believe in doing our bit for the planet. Every month, we plant trees to help offset carbon emissions and make our world greener. Shop with us and be part of something bigger.

___________________

So hit the checkout and buy your gear today. It's time to break out of the ordinary, with Compact Co. by your side. Here's to living big from small spaces!

Front view of the Bluetti B300K Expansion Battery, ideal for portable power solutions

Make Outdoor Living Easy with the B300K Bluetti Expansion Battery

Craving extra juice? The B300K Bluetti Expansion Battery has you covered with 2,764.8Wh of capacity, perfect for keeping everything from your portable fridge to essential gadgets powered up. With over 4,000 life cycles, you can count on it for years of adventure and reliable backup during power outages. Built tough and efficient, it’s the power solution that matches your lifestyle.

Click the Add to Cart button and keep your gear running smoothly.

Dependable, High-Capacity Power with the B300K Expansion Battery

The B300K isn’t just about capacity; it’s about dependability. Equipped with automotive-grade LiFePO₄ battery cells, it stands up to heavy use and ensures safe operation. Unlike standard batteries, this powerhouse charges to 80% in just 45 minutes when paired with the AC300 or AC500, so you don’t waste precious time waiting. It also acts as a stand-alone charging hub with a convenient USB-A port, perfect for small devices when you’re out exploring.

B300K Expansion Battery Key Features

  • 2,764.8Wh high capacity to keep essential gear running longer.
  • 4,000+ life cycles, offering years of consistent power.
  • Advanced LiFePO₄ technology for enhanced safety and efficiency.
  • Charges to 80% in just 45 minutes with AC300/AC500 pairing.
  • Built-in USB-A port for quick charging of small devices.
  • Compatible with top Bluetti models: AC200L, AC200MAX, AC300, AC500.
  • Sturdy build with a cooling fan to handle tough outdoor and indoor use.
  • 3+1 years extended warranty, ensuring reliable coverage and peace of mind.

Bluetti B300K Tech Specs

Battery Info

  • Model: B300K
  • Battery Capacity: 2,764.8Wh (51.2V, 54Ah)
  • Battery Type: LiFePO₄ (Lithium Iron Phosphate)
  • Life Cycles: 4,000+ Cycles to 80% Original Capacity

Output

  • USB-A: 12W Max., 5V / 2.4A

General Info

  • Net Weight: Approx. 29.5kg
  • Dimensions (L × W × H): 525 × 327 × 209mm
  • 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.
  • 2 × Expansion Port: 58.4VDC Max., 90A Max.
  • Warranty: 4 Years

B300K Expansion Battery Included Items

1 x B300K Expansion Battery
1 x Battery Expansion Cable (P090A)
1 x User Manual

Order Confirmation and Dispatch

Got your eye on something? Awesome! Once you've placed your order, we’ll get to work. We’re usually able to fulfill orders within 1 business day, however, this does vary depending on the warehouse so please allow up to 3 business days. Once it’s on its way, we'll ping you with a shipping confirmation email within 24 hours of dispatch and a tracking number.

Got questions or need an update? No problem! Reach out to us at 1300 241 251 or support@compactco.com.au.

General Delivery Timeframes

While delivery timeframes vary depending on your location and item ordered, you can generally expect your package to arrive within the timeframe below.

  • 2-5 Business Days - Adelaide, Brisbane, Canberra, Melbourne Sydney Metro
  • 3-8 Business Days - Other Major Cities & NSW, QLD, SA, VIC Regional
  • 7-12 Working Days - NT, TAS, WA, QLD Remote
Free Delivery

We've got great news for our Aussie customers – shipping is on us! That’s right, FREE shipping on most orders, making shopping with us even sweeter.

Some very remote regions of Australia might not be possible with our couriers, go ahead and place your order - and if it's flagged we'll be in touch.

Restricted Free Delivery Zones

We've got a big country, so for the below items we have a limited free delivery zone. The following are limited to certain areas:

  • North Sea Inflatables - free metro delivery 50km radius
  • Foldable Kayaks (Oru Kayaks and Terravent) - free to VIC, NSW, QLD and ACT

Still place your order as normal and we will be in touch straight away with the best shipping rate we can find - if it doesn't make sense then no harm done, we'll refund the order.

90 Day's Free and Easy Returns

If you're not absolutely smitten with your purchase? No stress! You've got 90 days to decide if it's a keeper. If not, sending it back is a cinch. Send it back to us and send us the bill for postage while you're at it! Love it or return it for FREE– it's that simple! Just make sure the item and the packaging are in tip-top shape.

In some cases, return delivery is over $200, in that case you will receive a $200 credit towards your shipping costs.

Other Terms and Conditions

If you miss the delivery, no worries! You may need to pick up your item(s) from the freight company's depot. We can arrange re-delivery to your home, but please note this will incur a small extra cost.

While we cannot pinpoint the exact time and date of delivery since it's out of our hands, you'll receive an email with tracking details. This way, you can contact the freight company directly for more accurate timing.

Please let us know if:

  • Someone will be available to sign for the delivery.
  • There's a safe spot to leave the item if no one will be home.
  • The address is a business location; we will need the business hours and the name of the building.
  • You notice any damage. If so, make a note when signing for the delivery or refuse to accept it. If you do accept delivery, immediately snap some photos of the damaged packaging or products with your smartphone or camera. If your item(s) arrive damaged, please send the photos to support@compactco.com.au and visit our returns page to lodge your return claim.

There you have it, everything you need to shop with confidence and a smile! 😊

7 Reasons to Shop with Compact Co.

From the first hello to the last goodbye, we'll make sure you're looked after and 100% satisfied with everything that you purchased. Here's why shopping with us is not only a smart choice but also a breeze!

___________________

#1 90 Day Trial - Free Returns on Us

Gave it a go, but your new gear’s just not the right fit? No worries! We’ve got your back with absolutely no hidden fees, and we’ll even cover your return shipping up to $200 (which is pretty much everything). Just make sure it’s in the same condition you received it, and we’ll handle the rest—easy as!

#2 Free Shipping Australia-Wide

Get your compact gear delivered for free, no matter where you are in Australia. We know you love a good deal, and free shipping makes it even sweeter!

Limitations: Foldable Kayaks

#3 Aussie Family Owned

We’re not some giant faceless company. Compact Co. is 100% Australian-owned and run by people who understand our great outdoors.

Have a question at 3 AM? No dramas! Our Aussie-based team is here to help you around the clock, so you’re never left hanging.

#5 Secure Checkout

Shop with peace of mind. Our checkout is SSL encrypted, ensuring your details are protected and confidential every step of the way. Easy, fast and 100% safe!

#6 5 Star Customer Support

Our customers reckon we’re pretty awesome! We pride ourselves on 5-star customer service, so you know you’re in good hands when you shop with us.

“Customer service was stellar, constant communication with the owner was a highlight. As a business owner, this level of engagement speaks volumes. Cheers to future business!”

#7 Giving Back – We Plant Trees

We believe in doing our bit for the planet. Every month, we plant trees to help offset carbon emissions and make our world greener. Shop with us and be part of something bigger.

___________________

So hit the checkout and buy your gear today. It's time to break out of the ordinary, with Compact Co. by your side. Here's to living big from small spaces!