The Bluetti Apex 300: Scalable Power, Smarter Energy, & A Step Beyond Backup

Sign up for CleanTechnica’s Weekly Substack for Zach and Scott’s in-depth analyses and high level summaries, sign up for our daily newsletter, and/or follow us on Google News!

Bluetti has built a solid reputation in the home energy market, and with the release of the Apex 300, the company is clearly aiming for more than just reliable backup power. This isn’t a simple successor to the AC300. It’s a modular, high-output, smart storage system built for people who want to take serious control over their home energy.

Whether you’re looking to optimize your solar setup, cut energy bills, or power an off-grid lifestyle, the Apex 300 brings a level of flexibility, expandability, and intelligence that stands out in the increasingly crowded energy storage space.

Key Specifications

• Base capacity: 2,764.8Wh
• Expandable up to: 19.35kWh with 6 x B300K modules
• AC output: 3,840W (continuous)
• Voltage: Supports both 120V and 240V
• Parallel support: Up to 3 units, for a total of 11.52kW output
• Solar input: Up to 30,000W with Bluetti’s new SolarX 4K voltage regulators
• Switchover time: 0ms (uninterrupted backup)

Built For Modularity & Growth

The Apex 300 was clearly built with scale in mind. At its core, the base unit provides nearly 2.8kWh of usable energy. But thanks to Bluetti’s B300K expansion modules, you can grow the system to over 19kWh, enough to support essential appliances for multiple days or power a full home through prolonged outages.

Need more power? You can run up to three Apex 300s in parallel, giving you over 11.5kW of output — enough to run high-demand tools, electric vehicles, or multiple HVAC units. And the best part? It’s hot-swappable. You can add or swap batteries without taking the system offline.

Ultra-Fast, Flexible Charging

One of the standout features of the Apex 300 is its charging speed and input versatility. With Bluetti’s SolarX 4K voltage regulators, you can input up to 30,000W of solar power, which is enough to fully charge the system in as little as 1.6 hours under optimal conditions.

For users combining solar with grid power, the Apex 300 allows dual charging from AC and solar simultaneously. This not only reduces charging time but also opens up smart energy usage strategies like peak shaving and time-of-use optimization.

Smart Energy Management With Real Savings

The Apex 300 goes beyond backup, as it helps you optimize your day-to-day energy use. Through the Bluetti app, you can schedule when and how the system charges and discharges. Want to charge the battery during off-peak hours and use it during peak pricing? No problem.

According to Bluetti, this kind of intelligent load shifting can save up to $2,400 per year on electricity bills for high-usage households. And during blackouts, the 0ms switchover time ensures that your critical devices stay on with zero interruption — ideal for sensitive electronics or home office setups.

Versatile Enough For Any Situation

The Apex 300 is more than just a home battery. Its modular, portable-friendly design also makes it ideal for:

• Full home backup
• Off-grid cabins and homesteads
• RV and van life setups
• Jobsite and remote workstations

Bluetti even offers kits designed specifically for mobile and outdoor use cases, taking advantage of its dual charging and scalable storage.

Apex 300 vs. AC300: What’s New?

If you’re familiar with Bluetti’s AC300, the Apex 300 brings some key upgrades. While the AC300 delivers 3,000W of output and 3,072Wh capacity, the Apex 300 increases that to 3,840W output with a slightly smaller starting capacity but greater expandability.

It also significantly ups the ante with solar input —  30,000W vs. AC300’s 2,400W — thanks to the new SolarX 4K regulators. That’s a big leap for anyone planning a serious solar buildout.

Final Thoughts

For users who understand the value of modularity, intelligent energy management, and serious solar integration, the Bluetti Apex 300 checks nearly every box. It’s not just a backup battery, it’s a full-featured home energy solution, and one that grows with your needs. With industry-leading power output, lightning-fast solar charging, and seamless app-based control, the Apex 300 is more than just a new product — it’s a platform. For more information, explore the full specs and pre-order details on the Bluetti website or the Indiegogo campaign page.