- Description
- Specifications
- Delivery
The Bluetti B300K Expansion Battery.
The Bluetti B300K Expansion Battery is a game-changing addition to your portable energy arsenal. Designed to deliver impressive performance and adaptability, this advanced battery enables you to scale your energy system effortlessly, providing the ultimate flexibility for both on-grid and off-grid applications. Whether you’re preparing for emergencies, powering an off-grid lifestyle, or expanding your existing Bluetti setup, the B300K is the ideal solution.
Impressive Battery Capacity and Longevity
At the heart of the Bluetti B300K lies a
...The Bluetti B300K Expansion Battery is a game-changing addition to your portable energy arsenal. Designed to deliver impressive performance and adaptability, this advanced battery enables you to scale your energy system effortlessly, providing the ultimate flexibility for both on-grid and off-grid applications. Whether you’re preparing for emergencies, powering an off-grid lifestyle, or expanding your existing Bluetti setup, the B300K is the ideal solution.
Impressive Battery Capacity and Longevity
At the heart of the Bluetti B300K lies a 2,764.8Wh capacity, offering ample energy to power your devices, appliances, and more. Built with LiFePO₄ (Lithium Iron Phosphate) battery chemistry, this expansion battery is designed for durability, delivering 4,000+ charge cycles to 80% of its original capacity.
With its long lifespan, the Bluetti B300K expansion battery is an investment in reliable power, ensuring consistent performance for years to come. Whether you’re using it as a standalone unit or pairing it with other Bluetti systems, this battery is ready to handle your energy demands.
Seamless Integration with Bluetti Power Stations
The Bluetti B300K expansion battery integrates effortlessly with a range of Bluetti power stations, including the AC200P L, AC200MAX, AC300, and AC500. This compatibility gives you the freedom to customize and scale your energy solution based on your needs.
- For the AC500, a P090D to P150D cable is required for connection.
- Expand your capacity for long-term off-grid applications or enhance your backup system for home use.
By mixing and matching the B300K with other Bluetti batteries and power stations, you can create a bespoke energy system that adapts to your lifestyle.
Cutting-Edge Technology for Optimal Performance
The Bluetti B300K is equipped with AI-BMS (Artificial Intelligence Battery Management System) technology, which ensures optimal performance and safety. The system monitors and regulates the battery’s operation, protecting it from overcharging, overheating, and other potential issues.
Additional features include:
- Robust aluminium casing for durability and heat dissipation.
- An efficient cooling fan that prevents overheating during heavy use.
- Advanced wireless components, ensuring seamless communication with connected devices and systems.
This combination of advanced features guarantees that the B300K performs reliably in any scenario, from powering essential devices during outages to supporting renewable energy setups.
Convenient USB-A Port for Essentials
In addition to serving as a powerful expansion battery, the B300K features a built-in USB-A port (12W). This port is perfect for charging smaller devices like smartphones, tablets, and portable fans, ensuring you’re always connected and comfortable, even in remote locations.
The inclusion of this port makes the B300K not just a companion for larger power stations but also a versatile standalone unit for keeping your everyday essentials charged.
Built for Durability and Portability
The Bluetti B300K is designed to withstand the rigors of outdoor use while maintaining sleek portability. Its robust aluminium casing protects it from environmental factors, and its design makes it easy to transport and store.
Whether you’re setting up camp, working remotely, or preparing for emergencies, the Bluetti B300K offers the reliability and convenience you need to stay powered up.
Flexible Warranty for Peace of Mind
Bluetti stands behind the quality of the B300K with a comprehensive 3+1 years warranty. This extended coverage ensures that your investment is protected, giving you confidence in your energy solution (Register HERE for an extended warranty).
Why Choose the Bluetti B300K Expansion Battery?
The Bluetti B300K is more than just an expansion battery; it’s a versatile and powerful solution for scaling your energy system. With its high capacity, long lifespan, seamless integration, and advanced features, it offers unparalleled flexibility and reliability.
Whether you’re enhancing your off-grid power setup, preparing for emergencies, or simply looking for a dependable backup, the B300K is the perfect choice for anyone seeking a customisable and robust energy solution.
What’s In the Box?
Bluetti B300K Expansion Battery, P090A Battery Expansion Cable (800mm), Warranty card.
Read MoreMain Features:
- 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
- Charging Temperature: 0°C to 40°C (32°F to 104°F)
- Discharging Temperature: -20°C to 40°C (-4°F to 104°F)
- Charging Current: 60A Max. (Current may decrease outside specified temperatures)
Output:
- 2 × Expansion Port: 58.4VDC Max., 90A Max.
- USB-A: 12W Max., 5V / 2.4A
Dimensional Data:
- Length (L) cm 52.5
- Width (W) cm 32.7
- Height (H) cm 20.9
- Weight 29.5 KG
Delivery
When will I receive my order?
In most cases, a product on our website will give you an indication of the current stock availability, but shipping is not uniform for all products. We maintain fantastic relationships with all of our suppliers and we aim to get products to customers within 3 business days of the order being taken. This ava
...When will I receive my order?
In most cases, a product on our website will give you an indication of the current stock availability, but shipping is not uniform for all products. We maintain fantastic relationships with all of our suppliers and we aim to get products to customers within 3 business days of the order being taken. This availability is based on information from our suppliers and from sales and supply patterns. The availability information given is a guide only and not a guarantee as there are external factors that we may not have control over.
Coronavirus Update – UK couriers and transport companies will not currently guarantee delivery times and we are seeing a slight delay in deliveries – please bear this in mind when ordering.
Specialist Couriers – Some items such as the larger portable power stations are sent by specialist courier as standard couriers will not accept them. These specialist couriers are very reliable but sometimes don’t have tracking or timed delivery.
Split deliveries – We sometimes need to send orders for more than one item by different courier networks (portable power stations for example) – so you may receive items at different times.
1500rpm machines or larger diesel gensets however are typically priced on application and all depend on the destination. We will be happy to quote on any large diesel generator and discuss your needs over the phone or via email.
Most orders placed before 12pm on a business day will be shipped from our suppliers on the same day provided the product is in stock. If you need to be certain an item is in stock and available, or if you need a lead time, it’s worth calling our sales team on 01329 722390. Pricing for extended shipping areas like Northern Ireland, the Scottish Highlands and outlying Islands, Outer Hebrides, Channel Islands, Isle of Man, Scilly Isles, and other postcodes not considered as UK mainland can be obtained also by calling our offices.
Please note that the processing of a payment and acknowledgement email does not constitute a legally binding contact. In the case of mispricing, changes in stock quantity, or if we believe the machine will be misused, we reserve the right to cancel the order and provide a full refund.
Heavy Items
You will be contacted by phone after ordering a larger item to confirm a delivery date before your order is dispatched. Large or heavy items are dispatched through a pallet network, so if we can’t get in contact with you, we may be unable to send out your item on a next day delivery. Please be sure to include a working phone number with your order.
Heavy items will require the recipient to make arrangements to take delivery of the goods and may require the recipient to help the courier unload the item. For items that are delivered on a pallet the courier will leave the pallet as close to your door as possible.
1500rpm diesel generators will require forklift (or similar) offloading; if this is not available then we can arrange a Hiab offload at an additional price – please call us to discuss any delivery requirements.
Read MoreHave any questions on the Bluetti B300K Expansion Battery?
Get in touch with us today and we'll be happy to answer any questions you have.
- CALL US
01329 722390
- EMAIL
info@hampshiregenerators.co.uk
Documents

Jackery
Travel and explore with the best solar generators

EcoFlow
The UK's Largest Specialist EcoFlow Dealer

Excel Power Solar Panels
Power Up Your Electrical Devices

Anker Range
Get The Best Advice On Anker Power Stations