Bluetti B300K

BLUETTI B300K EXPANSION BATTERY

The Modular Foundation for High-Capacity Energy Storage

The BLUETTI B300K is a professional-grade Lithium Iron Phosphate (LiFePO4) expansion battery designed to serve as the high-density energy core for the BLUETTI modular ecosystem. With a robust 2,764.8Wh capacity, it is the primary storage module for the AC500 and AC300 systems. Engineered for longevity and safety, the B300K represents an evolution in energy density, offering a more compact and efficient form factor than its predecessors while maintaining the rugged reliability required for both home backup and off-grid living. Whether you are expanding an existing solar setup or building a comprehensive home energy fortress, the B300K provides the stable, long-lasting power needed to keep critical appliances running for days.

Key Features

• Premium LiFePO4 Chemistry: Built with high-stability Lithium Iron Phosphate cells, the B300K is rated for 3,500+ life cycles before reaching 80% capacity. This ensures a decade or more of daily use, offering far greater safety and longevity than standard lithium-ion batteries.

• Universal Compatibility: While optimized for the AC500 (via the P150D to P150D cable), it is also backward compatible with the AC300 and AC200 Series (with appropriate adapter cables), allowing users to scale their power across different hardware generations.

• Smart Battery Management (BMS): The integrated BMS monitors voltage, current, and temperature in real-time, protecting the cells against overcharging, deep discharge, and short circuits, ensuring maximum safety for indoor residential use.

• High-Density Thermal Design: The internal architecture is optimized for efficient heat dissipation, allowing the battery to maintain high discharge rates without the need for excessive fan noise, making it ideal for quiet home environments.

• Expansion Ready: The AC500 can support up to six B300K units simultaneously, allowing for a total system capacity of 18,432Wh, enough to provide complete energy independence for a small household during extended grid outages.

• Independent Charging Capability: The B300K can be charged independently of a head unit via solar (with the D050S DC Charging Enhancer) or AC wall outlet (with the T500 adapter), providing flexibility for pre-charging modules before an adventure.

Technical Specifications