CTS Marine-Grade 6.6kW Air-Cooled OBC Solution for Electric Leisure & Commercial Boats

A premier European boat builder specializing in sustainable marine mobility was developing a new series of all-electric leisure crafts. Equipped with a 96V 400Ah high-capacity battery pack, these vessels required a robust charging system capable of fast energy replenishment while enduring the harsh, corrosive conditions of saltwater environments.

• Corrosive Environment: Constant exposure to salt spray, high humidity, and fog that can lead to rapid oxidation of electronics.
• Large-Scale Energy Storage: Charging a 400Ah pack requires high stability and the ability to scale power if needed.
• Thermal Management: Ensuring efficient heat dissipation within enclosed engine compartments using an air-cooling architecture.
• Vibration & Motion: Sustained mechanical stress from wave impact and engine vibrations.

CTS provided a Ruggedized 6.6kW Air-Cooled On-Board Charger (OBC), specifically treated for marine applications and optimized for low-voltage, high-current battery architectures.

• Core Configuration: 6.6kW High-Efficiency Air-Cooled OBC.
• Marine-Grade Protection: IP67-rated enclosure featuring anti-corrosion coatings and sealed connectors to withstand saltwater ingress and high-humidity environments.
• Scalable Architecture: Fully supports multi-module parallel configuration, allowing the OEM to combine units for higher charging power (e.g., 13.2kW or 19.8kW) to meet larger fleet requirements.
• Intelligent Communication: CAN Bus integration for real-time synchronization with Marine BMS and glass-cockpit display systems.

• Salt-Spray Resilience: Extended service life in maritime conditions thanks to specialized surface treatments and automotive-grade sealing.
• Optimized Charging Time: Delivers a stable 6.6kW output, significantly reducing the recharge window for high-capacity 96V systems.
• Modular Flexibility: The parallel-ready design allows the manufacturer to use a standardized part across different boat models, simplifying inventory and R&D.
• Silent & Reliable: Advanced air-cooling design ensures quiet operation—a critical factor for the luxury leisure boat experience.