BLUETTI B500K Expansion Battery | 5,120Wh

BLUETTI B500K Expansion Battery — 5,120Wh of Pure Power Freedom

More capacity. More confidence. More days off the grid.

Meet the BLUETTI B500K Expansion Battery — the muscle behind your power setup. Pack a massive 5,120Wh of clean, ready-to-use energy and transform your AC200L or AC300 into an unstoppable powerhouse. Whether the grid goes dark or the road calls you off it, the B500K keeps everything running.

5,120Wh That Goes the Distance

This isn’t backup power that taps out at midnight. With 5kWh+ of stored energy, the B500K carries you through the long haul:

• Refrigerators & freezers — keep food fresh, no compromises
• Lights, fans, routers & TVs — comfort that doesn’t quit
• Laptops, tablets & devices — stay connected anywhere
• Power tools — work without the wall
• Medical equipment — dependable, life-essential power
• Whole-night outages — sleep easy, stay powered

From multi-day camping to full off-grid living, the B500K delivers when it matters most.

Plug In. Power Up. Instantly.

Snap the B500K onto your compatible BLUETTI power station and watch your energy storage multiply on the spot. Build the system your life demands:

🏠 Home backup · 🚐 RV & van setups · ☀️ Solar off-grid systems · 🔋 Multi-battery power banks

Your lifestyle grows. Your power grows with it.

Built to Last — LiFePO₄ Inside

Engineered with premium LiFePO₄ cells for power you can count on for years:

• 3,500+ charge cycles — a decade of dependable use
• Superior thermal stability
• Higher safety, longer lifespan

This is a battery that shows up, again and again and again.

Soak Up the Sun

Pair it with your AC200L or AC300 and unlock high-efficiency solar charging. Perfect for:

🌲 Remote cabins · 🏕️ Off-grid hideaways · 🌍 Sustainable living · 💸 Lower utility bills

Capture more sunshine. Store more freedom.

Smart Protection, Built In

An advanced Battery Management System guards every watt with overvoltage protection, real-time temperature monitoring, short-circuit defense, and overcharge/over-discharge control. Safe. Stable. Smart.

Rugged Design. Effortless Setup.

Big on capacity, easy on handling — the B500K stacks seamlessly with your BLUETTI gear and goes wherever you do:

Emergency backup · Van life · Long camping trips · Fieldwork · Solar storage