The drive battery is the heart of an electric or hybrid vehicle—and one of the most expensive components. I test it professionally and independently of the brand.

Scope of services:


  • Analysis of SoH (State of Health) and SoC (State of Charge);
  • Remaining capacity, charging cycles, cell condition, temperature behavior;
  • OBD-based or manufacturer-specific readout (depending on the vehicle type);
  • Evaluation of charging behavior and energy efficiency;
  • Issuance of a battery certificate for documentation (e.g. upon sale).

Especially recommended:

  • before buying a used electric/hybrid vehicle;
  • to secure evidence in the event of reduced range or charging problems;
  • when returning a lease or during a warranty check.

I shed light on the darkness of high-voltage technology.
Safely, understandably, and objectively.