Bluetti B300K Expansion Battery | 2,764.8Wh
Unlock more power and energy independence with the Bluetti B300K Expansion Battery — a cutting-edge 2,764.8Wh lithium iron phosphate (LiFePO₄) battery built to expand your Bluetti modular power system and supercharge your off-grid life.
Perfect for home backup, camping, RVs, and critical job site power, the B300K is engineered to pair seamlessly with the Bluetti AC300, AC500, and EP500Pro systems. With ultra-durable cell chemistry and fast-charging capabilities, this battery gives you reliable backup power whenever and wherever you need it.
🔋 Key Features of the Bluetti B300K Expansion Battery
Massive Capacity:2,764.8Wh of clean, dependable power
Long Life:3,500+ charge cycles to 80% capacity (LiFePO₄)
High Compatibility:Works with Bluetti AC300, AC500, and more
Flexible Charging:Supports solar, AC, and car charging (when used with host units)
Pass-Through Power:Keep using power while charging
Smart Battery Management System (BMS):For safe, efficient charging
📦 What's in the Box
1 x Bluetti B300K Expansion Battery
1 x Battery Expansion Cable
1 x User Manual
1 x Warranty Card
📊 Specifications
Battery Type | LiFePO₄ (Lithium Iron Phosphate) |
Capacity | 2,764.8Wh |
Lifespan | 3,500+ cycles to 80% capacity |
Output Port | Battery Expansion Port Only |
Dimensions | 20.5 x 12.6 x 10.4 inches |
Weight | 83.8 lbs (38 kg) |
Operating Temperature | 0°C to 40°C (32°F to 104°F) |
Storage Temperature | -10°C to 45°C (14°F to 113°F) |
💡 Why Choose the Bluetti B300K?
This isn’t just an expansion battery—it’s peace of mind. Whether you're planning for a power outage or powering your RV on a long road trip, the B300K gives you flexibility, freedom, and long-lasting energy security. It’s the perfect add-on for those who are serious about energy storage and off-grid capability.
Shop now and take control of your power future. Want to expand your power setup even further? Check out our full collection of Cummins Generators — perfect for full home backup and hybrid energy systems.
🎥 Watch It in Action
📞 Have Questions?
We're here to help! Contact us at support@allprogenerators.com or call us at (555) 555-5555 for expert guidance on choosing the perfect power solution.