Bluetti SolarX 4K

• Compatibility: Apex 300, B300, B300K, B300S, AC300, AC500
• Ultra-Fast Solar Charging: Delivers up to 4 kW of solar power, so your BLUETTI batteries charge faster and your devices stay powered longer, even off the grid.
• Universal Solar Support: Supports solar panels from 150 V to 500 V, safely stepping down to below 60 V for effortless, worry-free charging.
• Reliable & Safe Power: MPPT technology with isolation ensures steady performance, maximizes solar energy, and protects your devices.

Seamless Solar Compatibility, Supercharged

Meet the world's first 4 kW solar charge controller. The BLUETTI SolarX 4K takes 150–500 V from nearly any rooftop or ground array and converts it into safe, sub-60 V charging for BLUETTI power stations—up to 4,000 W. 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.

Easy Steps to Install

Specifications

Output

• Output Power: 4,000 W
• Max. Output Voltage: 58V
• Min. Output Voltage: 35V
• Max. Output Current: 80A
• Communication Interface: RJ45

Input

• Max. Input Power: 4,200 W
• Open-Circuit Voltage: 500 VDC
• Startup Voltage: 150 VDC
• MPPT Operating Voltage: 120 VDC to 450 VDC
• Number of MPPT: 1
• Rated Input Current: 13A
• Max. Input Current: 17A

General

• MPPT Efficiency: 99% Max.
• Connectivity: CAN 2.0/Bluetooth/Wi-Fi
• Overtemperature Protection: 55°C (131°F)
• Storage Temperature: -20°C to 55°C (-4°F to 131°F)
• Operating Temperature: -20°C to 55°C (-4°F to 131°F)
• Operating Humidity: 10% to 90% RH
• Operating Altitude: ≤ 2,000 m (6,562 ft)
• Noise Level: 52 dB
• Cooling Method: Air Cooling
• Protection Grade: IP21
• Net Weight: 7.6 kg (16.8 lbs)
• Dimensions (L × W × H):
  • 288.4 × 474.0 × 90.2 mm
  • (11.35 × 18.66 × 3.55 in)

In The Box

Warranty Period

• BLUETTI warrants that the product will be free from defect in workmanship and material to the original consumer purchaser.
• The warranty period starts on the date of purchase by the original consumer purchaser,  
• For the product of portable power station, the warranty period varies from 24 months to 72 months.
• For the product of home backup system, the warranty period varies from 48 months to 60 months.
• For the product of solar panel and accessories as cable, charger etc, 12 months is provided for the warranty service.
• No warranty for gifts product and Warranty period may vary by country subject to local laws and regulations. 

Warranty Statement 

• Any defects in material, workmanship of your product will be covered after you provide any valid proof of purchase and information including but not limited to:
• A purchased order number made through BLUETTI official stores.
• Sales invoice or order confirmation email that clearly shows the description of the product, its price, and sales channel.

Note: The limited warranty is restricted to the country of purchase. The warranty will be invalid on the items once they are taken or shipped to other countries.

Exclusions of Warranty

• Misused, abused, damaged by accident or damaged due to force majeure (e.g. lightning strikes, tornadoes, hurricanes, etc.);
• Unauthorised modification, repair, dis-assembly or operation not in accordance with the official instructions or manuals;
• Use for special application other than normal consumer use;
• Any defect or damage caused by exposure to excessive heat, cold, liquids or other external causes;
• Invalid proof of purchase;

Warranty period expired

• The battery model on the warranty certificate does not match the actual item
• Product wear and tear through the usage of time.

Additional Postage Payable for Shipping to

• Northern Ireland
• Highlands
• Northern Scotland
• Scottish Isles
• Isle of Man
• Orkney
• Shetland