BLUETTI B300K 2764Wh Expansion Battery

Expand Your Power. Stay Off-Grid for Longer. Get more energy storage from your compatible BLUETTI portable power station with the BLUETTI B300K Expansion Battery. Featuring a substantial 2764.8Wh (2.76kWh) LiFePO4 battery capacity, the B300K is designed to extend operating time for camping, caravanning, off-grid adventures and emergency home backup. Whether you're powering a camping fridge, running essential appliances during a blackout or building an expandable solar generator system, the B300K provides additional stored energy when you need it most. Built with long-lasting lithium iron phosphate battery technology, the B300K offers dependable performance, excellent durability and flexible expansion for compatible BLUETTI systems. Key Features 2764.8Wh (2.76kWh) battery capacity – Additional energy storage for extended runtime. LiFePO4 battery technology – Long-lasting, stable lithium iron phosphate chemistry. 4,000+ charge cycles – Designed to retain at least 80% capacity after 4,000 cycles. Expandable power storage – Connect to compatible BLUETTI power stations. Solar energy storage – Store additional energy captured by your compatible solar generator system. Compact modular design – Expand your existing power setup without replacing the main power station. Camping and home backup – Ideal for caravans, off-grid use and emergency electricity storage. K1 & K2 configurations – Select the correct compatible connection configuration for your BLUETTI system. 2764.8Wh of Additional Battery Storage The B300K adds approximately 2.76kWh of nominal battery capacity to a compatible BLUETTI system. That means longer operation for compatible appliances, including: Camping fridges and freezers Caravan appliances Lighting and electronics Laptops and communications equipment TVs and entertainment systems Essential household equipment during power outages Off-grid equipment and accessories Actual operating time depends on appliance consumption, inverter efficiency, battery condition and environmental conditions. Long-Life LiFePO4 Battery Technology The BLUETTI B300K uses LiFePO4 battery cells, known for their durability, thermal stability and long operating life. With more than 4,000 charge cycles to 80% remaining capacity, the B300K is designed for years of regular use. This makes it suitable for customers who frequently use their portable power stations for camping, caravanning or backup electricity. Expand Your BLUETTI Power System The B300K is designed to work with selected BLUETTI power stations and expandable energy storage systems. By connecting a compatible expansion battery, you can increase total available energy storage without purchasing an entirely new power station. This is particularly useful for: Longer camping and caravanning trips Extended off-grid operation Increased home backup runtime Solar-powered outdoor equipment Additional overnight battery storage Important: Compatibility depends on the BLUETTI power station model, connection configuration, cable and supported firmware. Confirm the correct K1 or K2 version before ordering. Ideal for Camping, Caravanning & Home Backup Whether you're spending a weekend outdoors or preparing for unexpected electricity interruptions, additional battery capacity can make a significant difference. The B300K provides extra stored energy for your compatible BLUETTI system, allowing you to operate appliances for longer between charging sessions. When connected to a compatible solar-charging power station, the expanded system can also store additional solar energy for use after sunset. Technical Specifications Specification Details Brand BLUETTI Model B300K Product Type Expansion Battery Nominal Capacity 2764.8Wh Battery Chemistry LiFePO4 Battery Cycle Life 4,000+ cycles to 80% capacity Expandable Storage Yes, with compatible BLUETTI systems Configurations K1 / K2 – compatibility dependent Applications Camping, caravanning, off-grid and home backup Important Compatibility Information The BLUETTI B300K is an expansion battery and is not a standalone AC portable power station. It is intended to provide additional battery storage when connected to compatible BLUETTI equipment. It does not replace the inverter, charging functions or AC outlets of the main power station. Please confirm your BLUETTI power station model and the correct K1/K2 connection configuration before purchasing. Why Choose the BLUETTI B300K? The BLUETTI B300K offers a practical way to increase your available battery storage without upgrading your entire portable power system. With 2764.8Wh capacity, durable LiFePO4 technology and flexible modular expansion, it's a valuable addition for customers seeking longer runtimes and greater energy independence.