The HK-J-H99-40 from TC Charger is an On-Board Charger designed for electric mobility platforms such as electric motorcycles, utility vehicles, and small electric transport systems. It operates with a rated input voltage of 72 V and delivers an adjustable DC output voltage ranging from 25 V to 99 V, with a maximum output current of 40 A, enabling compatibility with a wide range of lithium-based battery packs. This on-board charger (OBC) supports high-efficiency power conversion with a full-load efficiency exceeding 93%, helping reduce energy losses and heat generation during battery charging. It incorporates dual thermal management mechanisms, combining forced-air cooling with water-cooling support for improved heat dissipation.

The HK-J-H99-40 integrates multiple protection features, including output over-voltage protection, over-current protection, short-circuit protection, reverse-polarity protection, input under-voltage and over-voltage protection, and over-temperature protection. It features a rugged IP67-rated enclosure, providing protection against dust ingress and water exposure, making it suitable for outdoor and vehicle-mounted applications. This OBC measures 222 × 109 × 125 mm and weighs approximately 5.2 kg, allowing integration into compact electric vehicle platforms where space and durability are critical design considerations.