B500K for Apex 300
Editor's Take
The B500K adds a modular boost to the Apex 300, giving owners a way to extend backup time without redesigning their whole system. At $1,999 it lands in a niche price band where the brand name and scalability are the main selling points, though the lack of detailed capacity numbers leaves some uncertainty.
Who is this for?
It's a good fit for existing Apex 300 users who need extra runtime and are comfortable investing a couple of thousand dollars in a dedicated battery module.
Content reviewed September 11, 2026
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Quick Verdict & Overview
Pros
- Designed specifically for the Apex 300 system
- Scalable storage that can extend backup duration
- BLUETTI brand carries a reputation for reliable portable power
- Priced under $2,000 for a modular battery solution
Considerations
- No published capacity or power output numbers
- Limited to use with the Apex 300, not a universal battery
- May be excessive for small‑scale or short‑term backup needs
- Lack of detailed warranty information
Editor's Take
The B500K adds a modular boost to the Apex 300, giving owners a way to extend backup time without redesigning their whole system. At $1,999 it lands in a niche price band where the brand name and scalability are the main selling points, though the lack of detailed capacity numbers leaves some uncertainty.
Who is this for?
It's a good fit for existing Apex 300 users who need extra runtime and are comfortable investing a couple of thousand dollars in a dedicated battery module.
Frequently Asked Questions
Can the B500K keep a 1.5 kW home office running for an entire 8‑hour workday?
Is the B500K suitable for whole‑house backup during a prolonged outage?
Is $1,999 a reasonable price for the B500K?
How easy is it to install the B500K with my existing Apex 300 system?
Who it's not for
This isn't for you if you need a standalone power solution that works with any device or brand.
Product Description
Product Information
| Product Name | B500K for Apex 300 |
|---|---|
| Category | Battery Storage Cases | Battery Storage Cases |
| Brand | Bluetti | Bluetti |
| Store | Bluetti Global | Bluetti Global |
| SKU | CJ-cj_6191107_B500K2-UN-GY-SPFUS-00 |
| Currency | USD |
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