High Voltage Battery
The main energy storage unit in hybrid and electric vehicles.
A high-voltage (HV) battery powers electric motors and stores energy from regenerative braking. Typically lithium-ion or nickel-metal hydride, these packs operate at hundreds of volts. Proper insulation and cooling are vital for safety. HV batteries degrade over time, reducing range and efficiency. Regular diagnostics check voltage balance and temperature. Safe handling requires insulated gloves and proper disconnection tools. Recycling programs recover valuable materials. HV batteries are the heart of EV powertrains.
Applying This Knowledge in Practice
The diagnostic principles discussed above are commonly applied in real-world vehicle diagnostics. To put this knowledge into practice, explore professional automotive diagnostic tools designed to support system testing, fault analysis, and troubleshooting across modern vehicles.