BLUETTI Apex 300 + 2*B300K Expansion Batteries + SolarX 4K Charge Controller | Home Battery Backup
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Want faster solar charging and serious home backup power? The BLUETTI Apex 300 + 2*B300K Expansion Batteries + SolarX 4K Charge Controller has you covered
The BLUETTI Apex 300 + 2*B300K Expansion Batteries + SolarX 4K Charge Controller | Home Battery Backup is built for people who want maximum solar performance with the flexibility to grow. This setup combines high-capacity battery storage with the world’s first 4kW solar charge controller, giving you faster charging, more stored energy, and greater control over how your home is powered.
At the heart of the system is the Apex 300 paired with two B300K Expansion Batteries, giving you strong storage right from the start. Whether you are backing up essential appliances, powering an off-grid cabin, or planning a larger home energy setup, this system gives you reliable capacity with room to expand as your needs change.
Key Features of Apex 300 + 2*B300K Expansion Batteries + SolarX 4K Charge Controller
- World's smartest off-grid portable power solution
- Super scalable from 2,764.8Wh to 58kWh capacity and 3,840W to 11.52kW output
- 2nd-gen automotive-grade LiFePO₄ battery built to last 17 years
- Pays for itself in as little as 2 years
- Real-time Extreme Weather Alerts via the BLUETTI App
- Plug-and-play setup with instant 20ms UPS switchover
- Ultra-low self-consumption, 2-3x more efficient than competitors
- Supports up to 11.52kW generator charging at 230V
- Up to 19.2kW solar charging using SolarX 4K(Sold Separately)
Simple Installation Process
Expandable Solar: 4 kW to 12 kW Capacity
Apex 300+B300K+SolarX 4K
Charge to full in just 1.9 hours with 4,000 W solar, fast enough to keep lights, small appliances, and everyday devices ready when needed.
Note: Data tested by BLUETTI Labs. Actual charging times may vary
2×Apex 300 + 4×B300K + 2×SolarX 4K
8,000 W solar delivers reliable energy for larger appliances, power tools, and extended off-grid living.
3×Apex 300 + 9×B300K + 3×SolarX 4K
Scale to 12 kW, plus 7.2 kW from extra panels for a total of 19.2 kW, enough for heavy loads like central air conditioners, refrigerators, or a full home backup.
Flexible Charging for Your BLUETTI System
The SolarX 4K Charge Controller is what takes this setup to the next level. It accepts 150 to 500V input from most rooftop or ground-mounted solar arrays and safely converts it to sub-60V charging for BLUETTI power stations. That means up to 4,000W of solar charging, delivering faster top-ups and more usable energy throughout the day.
Solar Power Management, Anywhere You Are
Everything works together seamlessly through the BLUETTI app. You can monitor charging and battery levels in real time, receive firmware updates, and troubleshoot your system wherever you are. It puts full control of your energy setup in your hands, whether you are at home or away.
Apex 300 + 2*B300K Expansion Batteries + SolarX 4K Charge Controller Specifications
What's in the box of Apex 300 + 2*B300K Expansion Batteries + SolarX 4K Charge Controller?
