BLUETTI B500K Expansion Battery | 5,120Wh

BLUETTI B500K Expansion Battery | 5,120Wh LiFePO₄ Power Module

Five kilowatt-hours. Zero compromises.

Some batteries get you through the evening. The BLUETTI B500K gets you through the week. With a colossal 5,120Wh of stored energy on tap, this expansion module turns your AC200L or AC300 into a serious home energy system the kind that shrugs at outages and doesn’t flinch when you drive somewhere with no power lines at all.

5,120Wh Built for the Long Haul

This isn’t backup power that gives up at midnight. Over 5kWh of usable capacity means you keep running when everyone else is fumbling for candles:

• Fridges and freezers — food stays cold, groceries stay saved
• Lights, fans, routers and TVs — comfort that doesn’t get rationed
• Laptops, tablets and devices — connected wherever you land
• Power tools — a full day’s work with no wall in sight
• Medical equipment — dependable power for the things that can’t wait
• All-night outages — sleep through it, wake up to a working house

Multi-day camping trips. Full off-grid living. Storm season. The B500K handles all of it.

Connect It. Multiply It. Done.

Snap the B500K onto your compatible BLUETTI power station and your storage capacity jumps instantly no rewiring, no drama, no electrician on speed dial. Build the system your life actually needs:

🏠 Whole-home backup · 🚐 RV and van setups · ☀️ Solar off-grid systems · 🔋 Multi-battery banks

Your setup grows when you do.

LiFePO₄ Cells That Refuse to Quit

Premium lithium iron phosphate chemistry, chosen for endurance over hype:

• 3,500+ charge cycles — roughly a decade of regular use
• Superior thermal stability — steady under heat and load
• Higher safety, longer lifespan — the chemistry serious systems are built on

Charge it, drain it, repeat. It keeps showing up.

Let the Sun Fill the Tank

Paired with your AC200L or AC300, the B500K unlocks high-efficiency solar charging bank free energy by day, run on it all night, and watch your power bill get a lot less interesting.

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

A Smart Guard on Every Watt

An advanced Battery Management System watches over the pack around the clock: overvoltage protection, real-time temperature monitoring, short-circuit defence, and full overcharge/over-discharge control. Safe, stable, and entirely self-managing.

Rugged Build. Effortless Setup.

Big on capacity, easy to live with. The B500K stacks cleanly with your BLUETTI gear and travels as far as you’re willing to drive.

Perfect for: emergency backup · van life · extended camping · fieldwork and remote sites · solar energy storage