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BLUETTI

BLUETTI B500K Expansion Battery | 5,120Wh

BLUETTI B500K Expansion Battery | 5,120Wh

$1,799.00 USD
$2,899.00 USD $1,799.00 USD
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 BLUETTI B500K Expansion Battery | 5,120Wh

  • 5.12 kWh, Lasts Up to 10 Years: Supplies reliable energy for years with over 4,000 cycles.
  • Scalable to 100 kWh: Easily expands your setup for partial, whole-home, or even small business backup.
  • Universal BLUETTI Compatibility: Works seamlessly with Apex 300, AC300, AC500, AC200L, AC200MAX, and upcoming models.
  • Part of a Smarter Power System: Pairs with SolarX 4K, Hub D1, and more for clean, connected energy.
  • More Durable & Safe: Wireless internal frame makes it resilient to real-world knocks and shocks.
  • Wall or Trolley Setup: Mount to save space or move with ease for flexible, convenient use.
  • Register HERE for an extended warranty
Specs

BATTERY INFO

ModelB500K
Battery Capacity5,120Wh
Battery TypeLiFePO₄ (Lithium Iron Phosphate)
Cycle Life4,000+ cycle to 80% original capacity

GENERAL

Weight45kg (99.21lbs)
Dimensions (L × W × H)520 × 327 × 308.5 mm / 20.47 × 12.87 × 12.15 in
Charging Temperature0°C to 40°C / 32°F to 104°F
Discharging Temperature-20°C to 40°C / -4°F to 104°F
Storage TemperatureUp 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
Working Humidity5% to 95%RH
Charging Current65A Max. (Current may decrease outside specified temperatures)
Discharging Current70A Max.
2 × Expansion Port58.4VDC Max., 90A Max.
Warranty4 Years
CompatibilityAC200L, AC200MAX, AC300, AC500, Apex 300, B300K

IN THE BOX

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Up to 100 kWh Massive Expansion

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Why Choose BLUETTI B500K?

Extend Your Backup Time

From outage protection to camping trip and off-grid working, the B500K keeps you powered for longer — more freedom and peace of mind.

Adapt to All Your Needs

The B500K either expands your BLUETTI power stations, or serves as a high-capacity power bank with ecosystem components, delivering 700 W DC output for your devices.

* A P090D to P150D cable is required for connecting with AC500 and sold separately.

Made It Safe, Reliable, and Long-lasting

The B500K adopts advanced LiFePO₄ batteries for over a decade of safe use. Its third-gen wireless internal design and efficient cooling fan ensure stable performance, even in challenging conditions.

Fixed or Movable Setup

Secure the B500K to the wall or rack of your home or RV using its mounting holes, or attach it to the Foldable Trolley 2* for a mobile power supply.

*Note: Sold separately.

Operation Guide

BLUETTI B500K Expansion Battery User Manual

BLUETTI B500K Expansion Battery User Manual

FAQ

Q1: How to claim warranty?

A: Once you receive your product, please Register HERE to claim your warranty

Q2: Why doesn't the B500K drain all its power?

A: The B500K retains a portion of its energy to prevent over discharging, which helps protect the battery's lifespan and ensures long-term performance.

Q3: Can I leave the battery uncharged after fully discharging?

A: No, better to recharge it in time before its SoC drops to 1% to avoid potential damage. Plus, place it somewhere with a temperature of at least 10°C (50°F) for 12 hours before recharging.

Q4: Does the B500K support power bank mode?

A: No.

Q5: How many B500K batteries can l connect with AC300?

Can l mix B500K/B300/B300S?A: Up to 4 B500K batteries via the P090A cable. Yes, you can mix use them.

Q6: How many B500K batteries can l connect with Apex 300?

Can l mix B500K/B300K/B300/B300S?A: Up to 6 B500K batteries. Use the CA90 cable for B500K stacks and the P090A cable for more than 3 packs stacked separately.Yes, you can mix use 6 packs at most.

Q7: How many B500K batteries can l connect with AC500?

Can l mix B500K/B300K/B300/B300S ?A: Up to 6 B500K batteries via the P150D to P090A cable. Yes, you can mix use six packs at most.

Q8: How many B500K batteries can l connect with AC200L?

Can l mix B500K/B300/B230/B210?Up to 2 B500K batteries via the P090A cable, for 12,288 Wh capacity. You can only mix with B300, B300K, and B500K.

Q9: How many B500K batteries can l connect with AC200MAX?

Can l mix B500K with other BLUETTI expansion batteries?A:Up to 2 B500K batteries via the P090A cable. Yes, you can mix with B300K, B300, B230, and B210, up to 2 packs in total.

Q10: How can I monitor each battery when they're mix used?

A: You can connect them to your power stations and check them using the BLUETTI app.

Q11: Can I use B500K alone as a UPS?

A: No.

Q12: Can I use or charge B500K in sub-zero temperatures?

A: Technically, it can power devices below zero, but it can't be recharged. Temperature ranges for B500K:Charge: 0 to 40℃ (32 to 104℉);Discharge: -20 to 40℃ (-4 to 104℉);Storage: -20 to 40℃ (-4 to 104℉).

Q13: How long can it run my device?

A: Runtime = Battery capacity × DoD × η ÷ (Device power +Self consumption) For B500K, both DoD (Depth of Discharge) and η (inverter efficiency) are 90%, and the self consumption is 3 W. If you run a 100 W light bulb with it, the runtime will be: 5,120 Wh × 98% × 90% ÷ (100 W + 3 W) ≈ 43.8 hr Note: For reference ONLY, actual results vary.

Q14: Is B500K waterproof?

A: No. Please do NOT place it in a humid environment for a long time.

Q15: Is it possible to replace the built-in battery?

A: No. If the battery pack is faulty or even dead, please contact BLUETTI Customer Service.

Q16: Any videos on connecting B500K with BLUETTI units (AC300, AC500, AC200MAX, AC200L, Apex 300, B300K)?

A: Please check out our BLUETTI Support YouTube channel for tutorials.

Q17: How long can it run my device?

A: Running time = Battery capacity × DoD × η ÷ Device rated power DoD refers to Depth of Discharge and η is local inverter efficiency. For B300K, both DoD and η are 90%. If you run a 100W light bulb with it, the running time will be:2,764.8Wh × 90% × 90% ÷ 100W ≈ 22.39hrsNote: The above data is for reference ONLY.

Q18: Can I use the B500K without a power station?

A: Yes, you can pair the B500K with BLUETTI ecosystem components to use it independently. For instance, you can charge it using the SolarX 4K or the Charger 2, and power your DC devices via the Hub D1.