BLUETTI B300K Expansion Battery – 2,764.8Wh LiFePO₄, 4,000+ Life Cycles, Compatible with AC300 / AC500

Boost your energy storage with the BLUETTI B300K Expansion Battery—a heavy-duty, automotive-grade LiFePO₄ module designed to seamlessly expand the capacity of your existing BLUETTI power station. With a massive 2,764.8Wh capacity, 4,000+ life cycles, and compatibility with top-tier models like the AC300 and AC500, the B300K is a game-changer for off-grid power and home backup systems.

✔ 2,764.8Wh Capacity – Store more power for longer trips or outages
✔ LiFePO₄ Battery with 4,000+ Cycles – Long-lasting and ultra-safe chemistry
✔ Compatible With BLUETTI AC200L / AC200MAX / AC300 / AC500
✔ Expandable to 16,588Wh – Connect multiple units with AC500 for larger setups
✔ USB-A Output Included – Charge devices directly from the battery
✔ Standalone or Integrated Use – Use with or without your BLUETTI station
✔ Heavy-Duty Build with Smart Battery Management
✔ 4-Year Warranty – Long-term power with peace of mind

Perfect for Off-Grid, Emergency Backup & Solar Storage

Whether you're living off the grid, building a backup system for your home, or powering an extended camping trip, the B300K provides dependable, high-capacity energy. Pair with solar panels or a BLUETTI inverter for a flexible, future-proof setup.

Key Features:

✔ Battery Type: LiFePO₄ (Lithium Iron Phosphate)
✔ Capacity: 2,764.8Wh (51.2V, 54Ah)
✔ Battery Life: 4,000+ Cycles to 80% Original Capacity
✔ USB-A Output: 12W Max (5V / 2.4A)
✔ Standalone Charging Capable: Yes
✔ 2 x Expansion Ports: 58.4VDC Max, 90A Max
✔ Max Charging Current: 60A
✔ Max Discharging Current: 70A
✔ Compatible With: BLUETTI AC200L, AC200MAX, AC300, AC500
✔ Expandable Capacity: Up to 16,588Wh with AC500 system

Specifications:

Weight: 29.5 kg
Dimensions: 525 x 327 x 209 mm
Charging Temp: 0°C to 40°C
Discharging Temp: -20°C to 40°C
Storage Temp:
• Up to 1 month: -20°C to 40°C
• Up to 6 months: -20°C to 25°C
Working Humidity: 5% to 95% RH
Warranty: 4 Years

What’s in the Box?

✔ 1 x BLUETTI B300K Expansion Battery
✔ 1 x Battery Expansion Cable
✔ 1 x User Manual

⚡ Expand your power, extend your independence—with the BLUETTI B300K, your energy storage solution is smarter, safer, and ready for anything.