Power Box, Expands Electrical Capacity BLUETTI B300K Expansion Battery 2764.8Wh

Powerbox Bluetti B300K Expansion Battery 2764.8Wh
An expansion battery developed to provide flexibility and expand energy capacity for your top-tier BLUETTI power stations. With a massive LiFePO₄ (Lithium Iron Phosphate) capacity of 2,764.8Wh, the B300K is an essential component for easily building a power system that meets higher demands. LiFePO₄ batteries are renowned for safety, stability, and long service life; the B300K can withstand over 4,000 charge/discharge cycles to 80% of original capacity, far exceeding standard Lithium-Ion batteries, ensuring confidence in your long-term investment.

The B300K is designed to work in conjunction with main BLUETTI Power Stations equipped with battery expansion ports, such as the BLUETTI AC200MAX, AC300, AC500, and AC200L. Multiple expansion batteries can be connected to scale up total system capacity (e.g., the AC500 can connect multiple B300K units for a massive total capacity of up to 16,588Wh).

Although the B300K is primarily an expansion battery, it also functions as a standalone unit. Featuring a built-in USB-A port (5V/2.4A, 12W), it can directly charge smartphones or small USB devices when you don't need to turn on the main Power Station. Additionally, it supports fast charging when connected to an AC300 or AC500, allowing the battery to recharge rapidly.

Specifications
- Large Capacity: 2,764.8Wh (51.2V, 54Ah) provides long-lasting backup power.
- Automotive-Grade LiFePO₄ Battery: Offers maximum safety, durability, and a long lifespan of over 4,000+ charge cycles to 80% of original capacity.
- Modular Capacity Expansion: Designed to connect with main BLUETTI Power Stations such as AC200MAX, AC300, AC500, and AC200L to expand total system capacity.
- Built-in Output Port: Includes 1x USB-A port (12W) for charging small USB devices during standalone use.
- Fast Charging: When connected to a compatible main Power Station (such as AC300/AC500), the B300K can recharge rapidly (capable of reaching 80% in as little as 45 minutes).
- Rugged & Durable Design: Features robust construction and well-engineered connection ports.
- Intelligent Battery Management System (BMS): Protects against overcharging, over-discharging, overcurrent, overtemperature, and short circuits.
- Backward & Forward Compatibility: Designed to work with both previous and newer generations of BLUETTI Power Stations equipped with expansion ports.

Applications
- Large-Scale Home Battery Backup: Expands capacity for main Power Stations like the AC300 and AC500 to power household appliances.
- High-End RV & Van Life Use: Provides ample power to run numerous appliances in motorhomes or for high-demand, extended off-grid living.
- Small Commercial / Mobile Office Use: Powers office equipment, computers, or small tools required on site.
- Disaster Preparedness: A key component of a reliable backup power system for coping with emergencies and natural disasters.
- Off-Grid Solar Power System: The core heart of solar power systems for homes, cabins, or remote areas without electrical grid access