Bluetti Expansion Battery Series

Expand Your Power Capacity with Bluetti Batteries

Unlock reliable backup energy with the Bluetti Expansion Battery Series. Featuring the B300K and B500K LiFePO₄ models, these batteries are designed to seamlessly integrate with Bluetti power stations for extended runtime and flexible energy storage.

Perfect for home backup, RVs, and off‑grid adventures, they deliver long cycle life, advanced safety, and dependable performance when you need it most.