Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Cell Supervision Circuit: Notes
Attention !
The electrical voltage of the high-voltage battery unit is significantly greater than 60 volt. Therefore, the following electrical safety rules need to be observed before starting to work on the high-voltage battery unit:
- Disconnect from voltage supply
- Secure against unintentional restart
- Check that no voltage is applied
A cell block is a parts group comprising of multiple battery cells, heat conduction plates with insulating films and temperature sensors, and is monitored by the cell supervision circuit.
One cell module features 12 battery cells. In total there are 8 cell blocks (96 cells).
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.