What is BLUETTI SolarX 4K?

Many BLUETTI users rely on the Apex 300 for energy storage, but its solar input range of 12 to 60 volts is not enough for larger solar arrays or home-scale use. Customers asked for higher voltage support, faster charging, and more flexibility to expand into bigger systems.

The SolarX 4K was developed to meet these demands. It bridges the gap between high-voltage solar panels and BLUETTI’s battery systems, making it possible to build reliable setups for homes, cabins, RVs, and large off-grid projects.

Why Do You Need a Solar Charge Controller Like SolarX 4K?

If you are building a solar power system, one of the most important parts is the solar charge controller. It is the device that manages the energy coming from your solar panels and makes sure it charges your batteries safely and efficiently.

The SolarX 4K is BLUETTI’s high-power solar charge controller. It accepts solar panel input up to 500 volts and turns it into safe low-voltage power for BLUETTI storage systems. With a maximum of 4,000 watts of charging power, it gives homeowners, RV travelers, and off-grid users a reliable way to capture more solar energy and use it effectively.

What Makes SolarX 4K Stand Out?

The SolarX 4K is designed for people who want more than the basic charging options. It brings several advantages that directly answer common user needs:

Fast Solar Charging

It can handle up to 4,000 watts of solar power, which means your batteries recharge faster and you can run more devices without waiting long hours for sunlight to do the work.

Broad Compatibility

SolarX 4K works with major BLUETTI systems including Apex 300, AC300, AC500, and battery packs such as B300, B300K, and B300S. This makes it easy to add to an existing setup without replacing your entire system.

Flexible Expansion

You can start with one controller for a smaller setup, or expand to as many as three units. Together, they can support up to 12 kilowatts of solar input, enough to cover even demanding off-grid or whole-home scenarios.

Smart Monitoring

The controller comes with Bluetooth, WiFi, and CAN support. That means you can monitor performance on your phone or computer and keep track of how much solar energy you are generating and storing.

How Safe Is the SolarX 4K?

Safety is one of the biggest questions people have when they are dealing with high-voltage solar systems. The SolarX 4K uses an isolation circuit design. In simple terms, this separates the high-voltage solar panels from the low-voltage batteries and control systems.

This design protects users from electric shock, shields batteries from sudden surges or wiring faults, and prevents electrical interference that could cause errors or reduce efficiency. On top of that, the SolarX 4K meets strict global standards such as UL 1741, IEC 62109, and EN 61010, which are the same certifications used for residential and commercial energy systems.

Technical Specifications of SolarX 4K

How Can You Use SolarX 4K in Real Life?

People often want to know how this kind of solar charge controller fits into their daily lives. Here are a few common scenarios:

Home Backup Systems

Families who want protection during power outages can use SolarX 4K with an Apex 300 and several B300K batteries. This setup provides quick solar charging and enough stored energy to keep essential appliances running.

Off-Grid Cabins and Tiny Homes

For those living remotely, SolarX 4K supports rooftop solar arrays and ensures stable charging for daily needs such as lighting, refrigeration, and small appliances.

RV and Mobile Power

Travelers can pair the controller with an Apex 300 and one or two batteries to power air conditioning, cooking equipment, and electronics. It makes RV life more comfortable without relying on fuel generators.

DIY and Large-Scale Projects

Solar hobbyists and advanced users can scale up to three SolarX 4Ks with multiple Apex 300 units and up to 18 batteries. This supports a huge 12 kilowatts of solar input, delivering complete energy independence.

Bundles SolarX 4K You Can Choose