Trusted by our customers
Largest premium product selection
Next Working Day Delivery available!
 

BLUETTI B300K2 Expansion Battery 2764.8Wh Apex300 and AC500 Compatible

£899.00 RRP £1,498.50 (40.01 % Save)

Prices incl. VAT. Delivery information

In stock - Ready for dispatch

£899.00 BLUETTI B300K2 Expansion Battery 2764.8Wh Apex300 and AC500 Compatible
  • 68991
  • 29,50 kg
Bluetti B300K2 Expansion Battery – Expand Your Energy Storage The Bluetti B300K2 Expansion...more

Bluetti B300K2 Expansion Battery – Expand Your Energy Storage

The Bluetti B300K2 Expansion Battery is your go-to solution for enhancing the capacity of your Bluetti power system. With its robust 2764.8Wh storage and advanced LiFePO4 battery technology, the B300K2 ensures you have all the energy you need for extended off-grid adventures, emergency preparedness, or high-demand applications. Designed to integrate seamlessly with compatible Bluetti power stations, it’s the ultimate companion for those who need extra power without compromise.

Why Choose the Bluetti B300K2 Expansion Battery?

The B300K2 provides a significant energy boost, enabling longer runtimes for your devices and appliances. Whether paired with the Apex300 or other compatible systems, this expansion battery is ideal for creating a scalable, modular energy solution. Its durable design, advanced safety features, and solar compatibility make it a reliable and eco-friendly choice for anyone seeking to maximize their power capabilities.

Key Features

  • Massive Capacity: 2764.8Wh of energy storage provides extended power for essential devices, tools, and appliances.
  • High-Performance LiFePO4 Battery: Built with lithium iron phosphate cells for safety, durability, and over 3,500 charge cycles.
  • Seamless Compatibility: Designed to work with Bluetti Apex300 and other supported power stations for effortless integration.
  • Plug-and-Play Design: Quick and easy connection with no complicated setup required.
  • Solar Charging Capable: Works with Bluetti solar panels for renewable energy storage and off-grid applications.
  • Smart Battery Management System (BMS): Ensures safety with protection against overcharge, overheating, and short circuits.
  • Portable and Durable: Features a rugged design with built-in handles for easy transportation and reliability in tough conditions.

Applications

  • Home Backup: Add extra energy capacity for powering your home during extended outages.
  • Off-Grid Living: Extend your Bluetti system’s runtime for RVs, cabins, or remote workstations.
  • Emergency Preparedness: Stay ready for natural disasters with additional energy storage for critical devices.
  • Sustainable Energy Solutions: Pair with solar panels to create a green, cost-effective energy system.

Specifications

  • Battery Type: LiFePO4 (Lithium Iron Phosphate)
  • Capacity: 2764.8Wh
  • Lifecycle: Over 3,500 cycles to 80% capacity
  • Compatible Models: Apex300 and other supported Bluetti systems
  • Weight: 29.5kg

Power Longer with Bluetti B300K2 Expansion Battery

Upgrade your energy system with the Bluetti B300K2 Expansion Battery. Whether for emergencies, off-grid living, or demanding applications, this high-capacity battery provides the extra power you need to stay connected and prepared. Pair it with your Bluetti power station and enjoy extended runtimes, reliability, and eco-friendly energy. Invest in your energy independence today!

Brand: Bluetti
Weight (kg): 29.5
Capacity: 2764.8Wh

Information according to manufacturer. Subject to errors and changes.

CUSTOMER REVIEWS
12 Feb 2026

Bluetti b300k battery

I bought the b300k to expand the capacity of my apex 300 and battery group had it at the best price , very happy with speed of delivery and was super easy to connect with the included cable , very happy with purchase

Leave a product review
Downloads "BLUETTI B300K2 Expansion Battery 2764.8Wh Apex300 and AC500 Compatible"
Read, write and discuss reviews...more
Customer evaluation for "BLUETTI B300K2 Expansion Battery 2764.8Wh Apex300 and AC500 Compatible"
12 Feb 2026

Bluetti b300k battery

I bought the b300k to expand the capacity of my apex 300 and battery group had it at the best price , very happy with speed of delivery and was super easy to connect with the included cable , very happy with purchase

Write an evaluation
(Maximum number of files:3, Maximum file size (in MB):32, Allowed file extensions:jpg,png)
No files selected
Please enter these characters in the following text field.

The fields marked with * are required.

Recently Viewed