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BLUETTI B500K Expansion Battery | 5,120Wh

BLUETTI B500K Expansion Battery | 5,120Wh

BY: Bluetti | SKU: B500K-APEX300 Availability: In Stock
$1,799.00

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BLUETTI B500K Expansion Battery | 5,120Wh

The BLUETTI B500K Expansion Battery is a high-capacity energy storage solution designed to dramatically extend the runtime of compatible BLUETTI power stations. With a massive 5,120Wh LiFePO₄ battery, the B500K delivers reliable, long-term energy storage for home backup, off-grid living, and emergency preparedness.

Built for durability and scalability, the B500K integrates seamlessly with BLUETTI power systems, allowing users to expand their setup for partial or whole-home backup without replacing their existing equipment.

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BLUETTI B500K Expansion Battery | 5,120Wh Features

5,120Wh High-Capacity Energy Storage - Provides substantial battery capacity to significantly extend runtime for compatible BLUETTI power stations.

Long-Life LiFePO₄ Battery Chemistry - Built with LiFePO₄ (Lithium Iron Phosphate) cells rated for 4,000+ cycles to 80% capacity, ensuring long service life and enhanced safety.

Scalable System Expansion - Easily expand your power setup—multiple B500K batteries can be added to support larger energy demands and longer outages.

Seamless BLUETTI Compatibility - Designed to work natively with select BLUETTI power stations for plug-and-play system expansion.

Durable, Shock-Resistant Design - Engineered for real-world use with a reinforced internal structure that enhances durability during transport and installation.

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BLUETTI B500K Expansion Battery | 5,120Wh Applications

  • Home backup power expansion – Extend runtime during outages
  • Off-grid energy systems – Increase storage capacity for solar setups
  • Whole-home backup systems – Scale energy storage as power needs grow
  • Emergency preparedness – Long-duration energy for critical loads
  • RV or mobile power systems – High-capacity energy storage for extended travel
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What's Included

Everything you need is included with your product.

  • 1 × BLUETTI B500K Expansion Battery Pack
  • 1 × P090A Battery Expansion Cable
  • 1 × Documentation/ User Manual
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Warranty

  • 4-Year Manufacturer Warranty

BLUETTI B500K Expansion Battery | 5,120Wh Specifications

Battery Info

Specification Details
Model B500K
Battery Type LiFePO₄ (Lithium Iron Phosphate)
Battery Capacity 5,120Wh
Cycle Life 4,000+ cycle to 80% original capacity

General

Specification Details
Weight 45kg (99.21lbs)
Charging Temperature 0°C to 40°C / 32°F to 104°F
Storage Temperature Up to 1 month: -20°C to 40°C / -4°F to 104°F | Up to 6 months: -20°C to 25°C / -4°F to 77°F
Charging Current 65A Max. (Current may decrease outside specified temperatures)
2 × Expansion Port 58.4VDC Max., 90A Max.
Compatibility AC200L, AC200MAX, AC300, AC500, Apex 300, B300K
Dimensions (L × W × H) 520 × 327 × 308.5 mm / 20.47 × 12.87 × 12.15 in
Discharging Temperature -20°C to 40°C / -4°F to 104°F
Working Humidity 5% to 95%RH
Discharging Current 70A Max.
Warranty 4 Years

Frequently-Asked Questions

Is the B500K a standalone power station?

No. The B500K is an expansion battery and must be connected to a compatible BLUETTI power station to operate.

Can I use multiple B500K batteries together?

Yes. Multiple B500K units can be added to compatible systems to increase total energy storage capacity.

What power stations are compatible with the B500K?

It is compatible with select BLUETTI models including AC200L, AC200MAX, AC300, AC500, Apex 300, and B300K.

Is it suitable for indoor installation?

Yes. The B500K is designed for indoor use when installed according to manufacturer guidelines.

Manual