Apex 300+B500K
Editor's Take
The BLUETTI Apex 300 paired with two B500K batteries offers a solid foundation for home backup, delivering 3,840W of continuous output and a respectable 13kWh of stored energy. What really stands out is the system’s expandability, allowing users to grow the storage up to 100kWh as their needs evolve. While the price is steep, the modular design gives long‑term flexibility that many fixed‑capacity units lack.
Who is this for?
This kit is aimed at homeowners or small‑business operators who want a reliable, expandable backup power source for essential appliances during outages or off‑grid use.
Content reviewed September 11, 2026
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Quick Verdict & Overview
Pros
- High continuous output of 3,840W for running multiple appliances simultaneously
- Substantial base capacity of 13kWh providing extended backup time
- Expandable architecture allowing growth up to 100kWh with extra B500K units
- Includes two B500K battery modules for modular, scalable storage
- Backed by BLUETTI’s established reputation in portable and home power solutions
Considerations
- The $3,299 price may be prohibitive for buyers on a tight budget
- System is large and heavy, making it unsuitable for portable or mobile use
- Requires dedicated installation space and proper ventilation for safe operation
- May need professional assistance for optimal integration with home electrical panels
Editor's Take
The BLUETTI Apex 300 paired with two B500K batteries offers a solid foundation for home backup, delivering 3,840W of continuous output and a respectable 13kWh of stored energy. What really stands out is the system’s expandability, allowing users to grow the storage up to 100kWh as their needs evolve. While the price is steep, the modular design gives long‑term flexibility that many fixed‑capacity units lack.
Who is this for?
This kit is aimed at homeowners or small‑business operators who want a reliable, expandable backup power source for essential appliances during outages or off‑grid use.
Frequently Asked Questions
Can the BLUETTI Apex 300 + 2×B500K keep a refrigerator, a few lights, and a Wi‑Fi router running for 24 hours during a blackout?
Is this setup capable of powering an entire house, including HVAC and an electric water heater, during an outage?
Does the $3,299 price tag reflect good value for the capacity and expandability offered?
How straightforward is it to expand the system beyond the initial 13kWh capacity?
Who it's not for
This isn't for you if you need a lightweight, portable power solution for camping or travel, as the unit is bulky and intended for stationary installation.
Product Description
Product Information
| Product Name | Apex 300+B500K |
|---|---|
| Category | Bluetti US | Bluetti US |
| Brand | Bluetti | Bluetti |
| Store | Bluetti Global | Bluetti Global |
| SKU | CJ-cj_6191107_APEX300-2-39-SPFUS-00 |
| Currency | USD |
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