An HV battery for the classroom: This UniTrain system offers you the perfect introduction to the topic of "HV battery" for both automotive and commercial vehicle technology. The course addresses the structure of an HV battery with a focus on the battery management system and explains it in an intuitive and easy to understand way. The training system allows direct interaction with a simulated HV battery with smart relay and pilot line.  The trainee learns in an absolutely safe learning environment, as the training system only operates in the safety extra-low voltage range. An electrical hazard is therefore ruled out.