BLUETTI SolarX 4K Solar Charge Controller with XT60 Adapter Cable

The BLUETTI SolarX 4K Solar Charge Controller with XT60 Adapter Cable is a high-power MPPT solar charging solution designed to connect compatible high-voltage rooftop or ground-mounted solar arrays to supported BLUETTI power stations and expansion batteries. Accepting up to 4,200W of solar input and delivering up to 4,000W of charging power, it converts 150V–500V solar-array input into safe, sub-60V output for home backup, off-grid cabins, RV systems, remote properties and scalable solar energy storage. This XT60 version is designed primarily for supported parallel BLUETTI configurations.

Product Information

Brand: BLUETTI
Model: SolarX 4K
Product Type: High-Voltage MPPT Solar Charge Controller
Bundle Version: SolarX 4K with Locking Terminal-to-XT60 Adapter Cable
Primary Cable Application: Parallel BLUETTI System Connection
Maximum Solar Input Power: 4,200W
Maximum Charging Output: 4,000W
Maximum Open-Circuit Voltage: 500V DC
Startup Voltage: 150V DC
MPPT Operating Voltage Range: 120V–450V DC
MPPT Channels: 1
Maximum MPPT Efficiency: Up to 99%
Output Voltage Range: 35V–58V DC
Connectivity: Wi-Fi, Bluetooth and CAN 2.0
Cooling Method: Active Air Cooling
Protection Rating: IP21
Warranty: 2 Years
Compatibility Note: The SolarX 4K controller supports selected BLUETTI systems, but the included XT60 adapter cable is intended primarily for compatible parallel Apex 300, B300K and B300 configurations. Other systems may require a different connection cable.

Key Features & Benefits

Up to 4,000W Solar Charging:
Delivers up to 4kW of charging power to compatible BLUETTI power stations and battery systems, helping recharge larger energy-storage configurations faster under suitable solar conditions.

Supports High-Voltage Solar Arrays:
Accepts solar-array voltages from 150V up to a maximum open-circuit voltage of 500V, making it suitable for larger rooftop and ground-mounted solar-panel configurations.

Safe Sub-60V Charging Output:
Converts high-voltage solar input into controlled 35V–58V DC output for compatible BLUETTI power stations and expansion batteries.

Up to 99% MPPT Efficiency:
Maximum Power Point Tracking technology continuously adjusts the controller’s operating point to capture more available solar energy as sunlight, temperature and panel conditions change.

XT60 Parallel Connection Cable:
Includes a locking terminal-to-XT60 adapter cable intended for supported parallel BLUETTI configurations, including compatible Apex 300, B300K and B300 systems.

Scalable 4kW–12kW Solar Charging:
Supported Apex 300 configurations can use multiple SolarX 4K controllers, allowing solar charging capacity to scale from 4kW to as much as 12kW.

Fast System Recharging:
BLUETTI states that a suitable system can recharge in approximately 1.9 hours with 4,000W of available solar input. Actual charging time depends on the connected battery capacity, sunlight, temperature and system limits.

Isolated MPPT Power Conversion:
Uses isolation technology to help separate the high-voltage solar-array side from the lower-voltage BLUETTI charging system for safer and more stable operation.

Real-Time App Monitoring:
Wi-Fi and Bluetooth connectivity allow users to monitor solar performance, view operating information, receive firmware updates and troubleshoot supported functions through the BLUETTI app.

CAN System Communication:
CAN 2.0 communication supports coordinated charging and operating data exchange with compatible BLUETTI equipment.

Active Thermal Management:
Integrated air cooling helps regulate internal temperature during high-power solar conversion and extended charging operation.

Flexible Solar Panel Support:
Can work with compatible residential-style glass panels, ground-mounted arrays and other solar modules when the complete array remains within the controller’s voltage, current and wattage limits.

Home, RV and Off-Grid Applications:
Suitable for residential backup systems, remote cabins, RV energy systems, solar farms, workshops and other larger off-grid energy configurations.

Mechanical Specifications

Product Type: High-Voltage Solar Charge Controller
Dimensions: 288.4 × 474 × 90.2mm
Net Weight: 7.6kg / 16.8lb
Installation Type: Fixed vertical wall installation
Cooling Method: Active Air Cooling
Maximum Noise Level: Approximately 52dB
Protection Rating: IP21
Operating Temperature: -20°C to 55°C / -4°F to 131°F
Overtemperature Protection: Approximately 55°C / 131°F
Maximum Operating Altitude: 2,000m / 6,562ft
Communication Interface: RJ45
Wireless Connectivity: Wi-Fi and Bluetooth
System Communication: CAN 2.0
Grounding Requirement: Proper system grounding is required
Recommended Installation Location: Dry, stable and well-ventilated indoor or protected area

The IP21 enclosure is not designed for direct exposure to rain, water jets, flooding or severe outdoor weather.

Warranty Information

Warranty: 2 Years
Customer Support: Lifetime Customer Support
Protection Rating: IP21
Installation Requirement: Install according to the BLUETTI user manual and all applicable solar and electrical requirements.
High-Voltage Safety: Connected solar arrays can remain energised whenever exposed to sunlight. Appropriate isolation equipment and safety procedures must be used.
Grounding Requirement: The SolarX 4K must be properly grounded according to the installation instructions and local electrical regulations.
Compatibility Requirement: Confirm the solar-array voltage, current, polarity and total wattage before connection.
Environmental Requirement: Install in a dry and ventilated location within the specified operating-temperature range.
Professional Installation: Installation by a qualified solar or electrical professional is recommended, particularly for rooftop arrays and other high-voltage configurations.

Electrical Performance

Solar Input Specifications

Maximum Input Power: 4,200W
Maximum Open-Circuit Voltage – Voc: 500V DC
Startup Voltage: 150V DC
MPPT Operating Voltage Range: 120V–450V DC
Number of MPPT Channels: 1
Rated Input Current: 13A
Maximum Input Current: 17A
Supported Solar Source: Compatible rooftop, ground-mounted or portable solar-panel arrays within the specified electrical limits

The combined open-circuit voltage of the solar array must remain below 500V DC, including potential voltage increases during cold weather.

Charging Output Specifications

Maximum Output Power: 4,000W
Minimum Output Voltage: 35V DC
Maximum Output Voltage: 58V DC
Maximum Output Current: Up to 80A
Output Connection: Locking terminal-to-XT60 adapter connection
Primary XT60 Application: Supported parallel BLUETTI configurations
Direct AC Output: Not Supported
Direct USB Output: Not Supported
Built-In Battery: Not Included

The SolarX 4K is a charge controller rather than a complete power station. It requires a compatible BLUETTI power station or expansion-battery system to store and deliver the collected solar energy.

MPPT and Conversion Performance

Maximum MPPT Efficiency: Up to 99%
Conversion Type: High-Voltage DC to Low-Voltage DC
Power Conversion: Isolated MPPT
Maximum Solar Input: 4,200W
Maximum Charging Output: 4,000W
Cooling: Active Air Cooling
Overtemperature Protection: Approximately 55°C

Actual charging output may vary depending on:

• Solar irradiance
• Panel orientation and tilt
• Weather and cloud conditions
• Ambient temperature
• Partial shading
• Array wiring and cable losses
• Connected battery state of charge
• Power-station charging limits
• System configuration and adapter cable used

Compatibility

SolarX 4K Controller Compatibility: Apex 300, B300, B300K, B300S, AC300 and AC500
Included Cable: Locking Terminal-to-XT60 Adapter Cable
XT60 Cable Application: Supported parallel connection with Apex 300, B300K and B300
Parallel Use: Supported with compatible BLUETTI configurations
Solar Panel Compatibility: Solar arrays operating within the SolarX 4K voltage, current and wattage specifications
Maximum Solar Open-Circuit Voltage: 500V DC
MPPT Operating Range: 120V–450V DC
Minimum Startup Voltage: 150V DC
Maximum Input Current: 17A
Maximum Input Power: 4,200W
Direct AC Power: Not Supported
Direct Battery Storage: Not Included

Important Cable Compatibility

Single Apex 300 Connection: The P090D adapter version is generally recommended for a direct single Apex 300 connection and full communication support.

Parallel Apex 300 / B300K / B300 Connection: Use the included locking terminal-to-XT60 adapter cable.

AC500 / B300S Connection: A locking terminal-to-P150D adapter cable may be required and is generally sold separately.

AC300 Connection: A compatible SolarX 4K connection cable may be required depending on the system arrangement.

The controller may be compatible with several BLUETTI systems, but the included XT60 cable does not directly support every listed product without additional cables or adapters.

Smart Energy Features

• Supports up to 4,200W of solar-array input
• Provides up to 4,000W of charging output
• Accepts high-voltage solar arrays up to 500V DC
• Converts high-voltage solar input into sub-60V charging output
• Provides up to 99% MPPT efficiency
• Uses isolated MPPT power-conversion technology
• Supports compatible rooftop and ground-mounted solar arrays
• Includes an XT60 adapter cable for supported parallel configurations
• Supports compatible Apex 300, B300K and B300 parallel connections
• Supports selected AC300, AC500 and B300S systems with appropriate cables
• Supports scalable 4kW–12kW Apex 300 solar configurations
• Provides real-time monitoring through the BLUETTI app
• Supports Wi-Fi and Bluetooth connectivity
• Supports CAN 2.0 system communication
• Supports firmware updates and operating diagnostics
• Uses active air cooling for thermal management
• Provides integrated overtemperature protection
• Supports residential, RV, cabin and off-grid energy systems

Applications

• Home backup solar charging
• Parallel BLUETTI energy systems
• High-voltage rooftop solar integration
• Ground-mounted solar arrays
• BLUETTI Apex 300 systems
• B300 and B300K battery charging
• AC300 and AC500 solar charging with appropriate cables
• Off-grid homes and cabins
• RV and caravan energy systems
• Remote properties
• Emergency backup systems
• Power outage preparedness
• Small-business backup energy
• Workshops and sheds
• Custom solar energy systems
• Renewable energy storage
• Extended off-grid living

Included Accessories

• BLUETTI SolarX 4K Solar Charge Controller × 1
• Locking Terminal-to-XT60 Adapter Cable × 1
• Fixing Screws – ST4.8 × 8
• Grounding Screws – M5 × 3
• Grounding OT Terminals × 3
• Wall Anchors × 8
• Knockout Connector × 1
• Hex Socket Wrench × 1
• User Manual × 1

System Benefits When Paired with Compatible BLUETTI Power Systems

• Provides up to 4,000W of high-speed solar charging
• Supports XT60 connection for compatible parallel BLUETTI configurations
• Connects larger high-voltage solar arrays to lower-voltage BLUETTI battery systems
• Helps recharge larger energy-storage configurations faster during strong sunlight
• Supports rooftop and ground-mounted solar-panel integration
• Expands renewable charging beyond standard portable solar-input limits
• Provides up to 99% MPPT efficiency for improved solar-energy collection
• Supports scalable 4kW, 8kW and 12kW Apex 300 solar configurations
• Helps reduce reliance on grid electricity and fuel generators
• Improves stored-energy availability during outages
• Supports extended off-grid operation for homes, cabins and RVs
• Provides app-based monitoring and firmware management
• Supports compatible BLUETTI power stations and expansion batteries
• Converts up to 500V DC solar-array input into safe sub-60V charging output
• Uses active cooling and integrated protection for dependable high-power operation
• Provides flexible renewable-energy integration for residential, mobile and remote applications
• Supports longer off-grid operation when paired with a correctly designed solar array, compatible BLUETTI power system and appropriate installation accessories.

Contact PVtoEV for compatibility guidance, solar-array design support and complete BLUETTI SolarX 4K, power station, expansion battery and connection-cable recommendations.