The High Voltage Battery Training System is a compact, interactive training unit designed for teaching high-voltage battery management and diagnostics, using components from the Toyota Prius II OEM model. It enables students to connect and disconnect service plugs, measure battery voltage, and understand power transfer from the battery to the inverter. Equipped with a detailed wiring diagram and the ability to measure each battery cell separately, this trainer replicates real-world electric car conditions. The system includes LED indicators for monitoring relay and inverter status and offers a slowed start-up mode to facilitate step-by-step analysis of the activation sequence. All high-voltage components are safely enclosed under plexiglass for enhanced safety during hands-on training.