Bluetti B300K2 Standalone/Expansion Battery (2764Wh)
Bluetti B300K2 Standalone/Expansion Battery (2764Wh) additional 1Bluetti B300K2 Standalone/Expansion Battery (2764Wh) additional 2Bluetti B300K2 Standalone/Expansion Battery (2764Wh) additional 3Bluetti B300K2 Standalone/Expansion Battery (2764Wh) additional 4Bluetti B300K2 Standalone/Expansion Battery (2764Wh) additional 5Bluetti B300K2 Standalone/Expansion Battery (2764Wh) additional 6Bluetti B300K2 Standalone/Expansion Battery (2764Wh) additional 7
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The Bluetti B300K2 Expansion Battery is a versatile, durable, high-capacity battery unit that...
Product code: P-B300K2-EU-GY-BL-010
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Description

The Bluetti B300K2 Expansion Battery is a versatile, durable, high-capacity battery unit that can either be used as an energy scaling solution for compatible Bluetti portable power stations or as a standalone power source. Featuring a substantial 2764.8Wh capacity and advanced LiFePO₄ battery technology, when combined with the Bluetti AC500, you can achieve a massive total expandable capacity of up to 16,588Wh, making it suitable for demanding home backup, professional use and extended off-grid living.

Designed to seamlessly integrate with a wide range of Bluetti power stations, including the AC200L, AC200MAX, AC300 and AC500, the B300K2 allows users to easily scale their energy setup as power requirements grow. Whether you are expanding your home backup system, building a larger off-grid setup or preparing for outdoor travel, this powerful expansion battery offers the flexibility to create a customised portable energy solution.

Built for maximum reliability, the Bluetti B300K2 combines robust aluminium construction with advanced AI-BMS (Battery Management System) technology, intelligent wireless components and an efficient cooling system to provide dependable operation and enhanced battery protection.

What's In The Box: B300K Expansion Battery, P090A Battery Expansion Cable (800mm), Warranty & Documentation.

Compatibility: Bluetti AC200L, AC200MAX, AC300, and AC500 power stations.

Standalone Power Source: Use this expansion battery independently to charge smartphones, tablets, portable fans and other small essential devices with the convenient USB-A (12W) Port.*

  • High-capacity 2764.8Wh expansion battery for extended portable power
  • Compatible with Bluetti AC200L, AC200MAX, AC300 & AC500 power stations
  • Expandable energy storage system for home backup & off-grid use
  • Expand up to 16,588Wh when paired with the Bluetti AC500
  • Automotive-grade LiFePO₄ battery cells for enhanced safety & durability
  • Fast-charging capability with up to 80% charge in just 45 minutes
  • Advanced AI-BMS battery management system for intelligent protection
  • Durable aluminium casing for improved reliability & structural strength
  • Integrated cooling system for efficient thermal management
  • Standalone USB-A output for charging phones, tablets & small devices
  • Ideal for emergency backup, camping, off-grid living & renewable energy setups
  • Flexible modular design allows customised energy expansion
  • Reliable, eco-friendly & low-maintenance energy storage solution

Technical Specifications:

  • Battery Capacity: 2764.8Wh (51.2V, 54Ah)
  • Battery Type: LiFePO4 (Lithium Iron Phosphate)
  • Output USB-A: 12W Max., 5V / 2.4A
  • Net Weight: Approx. 29.5kg
  • Dimensions (L × W × H): 525mm x 327mm x 209mm

*P090D to P150D cable is required for connecting with AC500, sold separately. Battery connect cable is different to the B300K.

Code: P-B300K2-EU-GY-BL-010

DELIVERY INFORMATION

Fast, reliable UK delivery

  • FREE UK delivery (2–3 working days) on orders over £99 exVAT (order before 4pm)*.
  • Orders under £99 exVAT are charged £6 inc VAT (£5 exVAT).
  • Need it quickly? Choose from our Next Working Day & Saturday delivery options below (order before 2pm).

Delivery options & rates

Delivery OptionDelivery TimeCost
Standard Delivery2-3 working days£6.00 (£5.00 exVAT)
FREE Standard Delivery (orders over £99 exVAT)*2-3 working daysFREE
Next Working Day Delivery (order before 2pm)Next working day£9.99 (£8.33 exVAT)*
Next Working Day by 12pm  (order before 2pm)Next working day£20.00 (£16.67 exVAT)
Next Working Day by 10:30am  (order before 2pm)Next working day£21.60 (£18.00 exVAT)
Saturday Delivery  (order before 2pm Friday)    Next working day£20.00 (£16.67 exVAT)
Northern Ireland, Highland  & Islands Delivery  3-5 working days£9.99 (£8.33 exVAT)

Important: Orders placed after 2pm on Friday (or over the weekend) are processed on Monday for next working day delivery. Next Day & Saturday Delivery options NOT available on all products.

*FREE Standard & Next day delivery available on select products and will be clearly shown on the product page.


What to expect

  • We dispatch Monday - Friday (excluding public holidays).
  • Once dispatched, you’ll receive tracking information (where available).
  • If delivery is delayed for any reason, we’ll contact you as soon as possible with an updated estimate.

Please note: we cannot be held responsible for missed deliveries. Customers are advised to check their spam or junk folder to ensure tracking information and estimated delivery details are received.


Specialist product delivery

Some products require specialist handling:

  • For Portable power please allow up to 4 working days for delivery.
  • Solar panels are shipped via our £100 pallet delivery service.
  • In some cases a third-party supplier may fulfil your order directly.

Delivery areas & restrictions

  • Northern Ireland, Scottish Highlands & Channel Islands: please contact us for shipping rates.
  • Portable power to Northern Ireland: we can’t currently ship these items due to insurance issues with the courier.
  • International delivery: unfortunately we do not currently offer international shipping.

Questions, problems, or returns?

RETURN POLICY

Last updated May 23, 2024

Thank you for your purchase, we hope you are happy with it.

However, if you are not completely satisfied with your purchase for any reason, you may return it to us for a full refund, store credit, or an exchange; please see below for more information on our returns policy.

RETURNS

If you find you have received the wrong or damaged item(s), you need to contact us within 7 days of receipt of goods. Any time after this you are responsible for returning the goods at your own cost following the standard returns process.

All returns must be postmarked and in writing within fourteen (14) days of the purchase date. All returned items must be in a new, unopened and unused condition, with all original tags and labels attached.


RETURN PROCESS

To return an item, please click the ‘Download Returns Form’ below and complete all data fields. You can then email this to our team once completed.
Place your item(s) securely in its original packaging along with the returns form.
Please note that the RMA# on the returns address is your original order number; please ensure to reference this on the returns address, as per below.
You are now ready to mail your return to the following address:

Attn: Returns
RMA #/Order No -
Eco WizardUnderfloor Wizard Ltd t/a ECO Wizard
Beechfield House
Winterton Way
Macclesfield
Cheshire
SK11 0LP
United Kingdom

We ask that all customers when returning products send the goods via a trackable courier service. Underfloor Wizard Ltd t/a ECO Wizard will not be held responsible for goods which do not arrive at our premises.

Please note, you will be responsible for all return shipping charges, unless in the instance of damaged/faulty goods received in which case we can issue you with a returns label to cover the cost of postage.

Download Returns Form

REFUNDS

After receiving your return and inspecting the condition of your item, we will process your return or exchange. Please allow at least seven (7) days from the receipt of your item to process your return or exchange. Refunds may take 1-2 billing cycles to appear on your credit card statement, depending on your credit card company. We will notify you by email when your return has been processed.

Faults on installed products: 

If a product that has been installed develops a fault, please contact us, do not uninstall the product yourself. We will arrange for an engineer or technical support from the brand to assist with diagnosing the fault. Once the fault has been confirmed we can then arrange for the necessary next steps to occur.


EXCEPTIONS

The following items cannot be returned or exchanged:

  • opened box, damaged, missing or incomplete items cannot be returned.
  • items that have been installed.


QUESTIONS
If you have any questions concerning our return policy, please contact us at: returns@ecowizard.co.uk

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