The BTMS M6 is a dual-function thermal management system engineered to optimise traction battery and motor performance in demanding duty cycles.

With 14 kW active battery cooling and 5 kW heating, it delivers precise temperature control in extreme conditions from –30 °C to +45 °C. Integrated traction cooling via a water-to-air heat exchanger and brushless motor fan provides complete powertrain  thermal management in a single assembly.

Managed by Grayson’s Intelligent Thermal Controller and proprietary thermal logic software via CAN J1939, it enables seamless control and diagnostics across vehicle systems.

The AC-powered, compact package simplifies integration while ensuring consistent performance under high electrical loads, making the M6 a proven, ready-to-integrate solution for OEMs requiring multi-function battery and drivetrain thermal management.

Discover the features that work together to deliver efficient operation, easy integration, and long-term reliability.

• Dual-function thermal management: Cools both traction batteries and motors, reducing system complexity and optimising packaging.
• Integrated heating and cooling: 14kW cooling and 5kW heating ensures performance in hot and cold climates.
• Grayson Intelligent Thermal Controller: Advanced, CAN J1939-controlled module with proprietary thermal logic for precise temperature regulation.
• Battery pre-conditioning capability: Integrated heating enables cold-weather battery warming.
• CAN J1939 bootloader for easy software updates: Supports in-field control logic upgrades without hardware removal.
• DM1 diagnostics on CAN J1939 network: Broadcasts fault codes and status messages for simplified troubleshooting and maintenance.
• AC-powered operation: Consistent performance for platforms with significant electrical demand.
• Integrated components for simplified installation: Brushless water pump, lightweight header tank, electric expansion valve, and brushless fan are all housed within the unit.
• Long-life brushless fans and pump, scroll compressor: Delivers high efficiency, low noise, and extended service life for reduced downtime and lower TCO.
• Compact and lightweight design: Optimised for space-constrained installations.
• Validated, homologated, and certified: Fully tested for performance, durability, and compliance, including EMC R10 certification, ensuring suitability for global markets.
• Worldwide aftersales service and product support: Backed by Grayson’s global aftermarket network for parts, technical assistance, and service expertise.
• Global manufacturing capability: Produced across four plants worldwide for supply chain resilience and shorter lead times.

Each component is designed to support the system’s ability to deliver stable, efficient performance over its service life.

• Battery active cooling capacity: up to 14kW @ 40°C ambient, 25°C coolant outlet, 40l/min flow
• Battery Electric water heating capacity: 5kW
• Dimensions: 1146mm x 814mm x 621mm (L x W x H)
• High Voltage supply: 400V AC 3-phase 50Hz
• Low Voltage supply: 24V DC
• Refrigerant: R407C
• Coolant type: 50/50 W.E.G
• Weight: Approx. 125kg (excluding coolant)
• Control: CAN J1939 control interface with diagnostics
• Mounting: Suitable for chassis and roof

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