BLUETTI B500K 5120 Wh LiFePO₄ high-capacity expansion battery pack for scalable home, RV, off-grid solar and backup power systems

BLUETTI B500K 5120 Wh LiFePO₄ high-capacity expansion battery pack for home, RV, off-grid solar, and backup power systems

BLUETTI B500K 5120 Wh LiFePO₄ high-capacity expansion battery pack for home backup, RV, off-grid solar, and portable power systems

BLUETTI B500K2 modular LiFePO₄ expansion battery pack for high-capacity home, RV, off-grid solar, and backup power systems

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B500K Expansion Battery for AC200L/AC300

Name: BLUETTI B500K Expansion Battery for AC200L and AC300
Price: 5084.75 NZD
Availability: InStock

in Bluetti

$5,084.75 NZD (Including GST)

Available in stock

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Description

B500K Expansion Battery for AC200L / AC300 — Power That Doesn’t Quit

Your power station is great. Now make it unstoppable. The BLUETTI B500K bolts a massive 5,120Wh of clean LiFePO₄ energy onto your AC200L or AC300, turning a capable backup unit into a multi-day powerhouse. Outage? Off-grid weekend? Full RV season? The B500K keeps the lights on long after others run dry.

More Hours. More Devices. Less Worry.

That extra 5kWh isn’t just a bigger number it’s real, usable runtime. Enough to keep your fridge and freezer cold through a long blackout, run fans, lights, routers, laptops, and TVs deep into the night, fire up power tools on the job site, and carry your whole home backup well past the point where a standalone unit taps out. For perspective, BLUETTI’s own math puts a single 100W light bulb at roughly 43.8 hours of runtime on one B500K. That’s nearly two full days from one bulb. Bluetti Jamaica

Plug In. Power Up. Done.

No wiring headaches, no guesswork. Built specifically for the AC200L and AC300, the B500K connects with the included P090A cable and instantly multiplies your total storage. And when you’re ready for more, it scales with you expandable all the way up to 100kWh for partial, whole-home, or even small-business backup. BLUETTI

LiFePO₄ Built to Outlast the Years

This is energy you can trust for the long haul. Over 4,000 charge cycles and a lifespan of up to 10 years mean the B500K keeps delivering season after season. Stable temperature control, overvoltage and overload protection, and a third-generation wireless internal frame with an efficient cooling fan keep it cool, safe, and steady — even when you’re pushing it hard. BLUETTIBluetti Jamaica

Solar-Ready Energy Freedom

Pair the B500K with your AC200L or AC300 and let the sun do the work. High-efficiency solar charging makes it a natural fit for off-grid cabins, van and RV builds, solar home backup, and outdoor events or mobile work — anywhere you’d rather generate power than pay for it. Bluetti Jamaica

Works Beyond the Box

The B500K isn’t locked to a single setup. Pair it with BLUETTI ecosystem gear charge it via the SolarX 4K or Charger 2 and run your DC devices through the Hub D1 to use it independently of a main station. One battery, many ways to power your world. Bluetti Jamaica

Tough Where It Counts, Easy When You Move

Rugged enough for the job site, smart enough for the living room. Mount it to a wall or rack to save space, or lock it onto a Foldable Trolley when your power needs to travel. Home backup, RV and van life, long camping trips, remote work, full solar setups the B500K is at home in all of them.

Product Overview

Up to 100 kWh Massive Expansion

Increase your energy storage as needed, from 5.12 kWh to over 100 kWh*. The B500K battery is compatible with various BLUETTI power stations for easy, cost-effective upgrades.

*Note: Achieved with 3*Apex 300 +18*B500K units

Apex 300 + B500K

AC300 + B500K

AC500 + B500K

AC200L + B500K

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.

Home Backup

Camping

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.

Portable Power Station

Ecosystem

The B500K works with old, existing, or future BLUETTI power stations and expansion batteries.

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.

Tech Specs

B500K for Apex 300

FAQs

Q1: How to claim warranty?

Once you receive your product, please register to claim your warranty on our website.

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

The B500K retains a portion of its energy to prevent overdischarging, which helps protect the battery’s lifespan and ensures long-term performance.

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

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.

Q5: How many B500K batteries can l connect with AC300? Can l mix B500K/B300/B300S?

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?

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 ?

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?

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?

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

Q11: Can I use B500K alone as a UPS?

No.

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

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?

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?

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

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

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)?

Please check out our BLUETTI Support YouTube channel for tutorials.

Q17: How long can it run my device?

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 ≈ 22.39hrs

Note: The above data is for reference ONLY.

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

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.

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