BLUETTI SolarX 4K

Seamless Solar Compatibility, Supercharged

Meet the world's first 4kW solar charge controller. The BLUETTI SolarX 4K takes 150–500V from nearly any rooftop or ground array and converts it into safe, sub-60V charging for BLUETTI power stations—up to 4,000W. That means faster charging, more stored energy, and reliable power whether you're backing up your home, running an off-grid cabin, or building your own solar farm.

Scalable Solar Power, 4 kW to 12 kW

SolarX 4K lets you decide how much solar power fits your life. Use one unit to cover daily essentials, or scale up to three for your whole home. It connects to your existing solar setup via AC coupling, keeping BLUETTI's DC input ports free for extra panels, so you get more energy, faster, without tying up your system.

Charge Your BLUETTI System, Your Way

SolarX 4K works seamlessly with a wide range of BLUETTI power stations and battery packs, from Apex 300 and AC300 to AC500, B300K, B300, and B300S. Whether you're charging one unit, several at once, or mixing stations with batteries, SolarX 4K delivers safe, efficient, and flexible solar charging tailored to your setup.

*For details, please refer to the FAQs.

Control Your Solar Power Anywhere, Anytime

Easily monitor your system in real-time, receive firmware updates, and troubleshoot instantly, all from the BLUETTI app, giving you complete control wherever you are.

INPUT

• Max. Input Power4,200 W
• Open-Circuit Voltage500 VDC
• Startup Voltage150 VDC
• MPPT Operating Voltage120 VDC to 450 VDC
• Number of MPPT1
• Rated Input Current13 A
• Max. Input Current17 A

OUTPUT

• Output Power4,000 W
• Max. Output Voltage58 V
• Min. Output Voltage35 V
• Max. Output Current80 A
• Communication InterfaceRJ45

GENERAL

• MPPT Efficiency99% Max.
• ConnectivityCAN 2.0/Bluetooth/Wi-Fi
• Overtemperature Protection55°C (131°F)
• Operating Humidity-20°C to 55°C (-4°F to 131°F)
• Operating Altitude≤ 2,000 m (6,562 ft)
• Noise Level52 dB
• Cooling MethodAir Cooling
• Net Weight7.6 kg (16.8 lbs)
• Protection GradeIP21
• Dimensions (L × W × H)288.4 × 474.0 × 90.2 mm
• Warranty2 Years