Battery Diagnostics for Used Skoda Enyaq:
How E-Health Charge Identifies Issues with Analytics

In a recently published video by “Die Autodoktoren” (English The Car Doctors), our joint product with MAHLE Aftermarket, Battery Pro E-Health Charge, was used to check the battery condition of a used Skoda Enyaq iV.

The vehicle, built in 2021, was purchased with a mileage of less than 20,000 kilometres—practically as good as new. Nevertheless, the owner reported a significantly lower range than expected: under ideal conditions, the car managed a maximum of 350 kilometres instead of the 538 kilometres specified in the WLTP (Worldwide Harmonised Light-Duty Vehicles Test Procedure).*

The test with the E-Health Charge initially produced unexpected results. The quick test had to be repeated several times, as the system rejected the report due to an implausibly low State of Health (SoH) of the battery. Finally, a detailed analysis by the volytica team revealed that the SoH was around 50%. But does this really mean the battery has only half of its original capacity?

Not necessarily!

In this case, the low SoH value indicated another problem: a faulty battery management system (BMS) or possibly a defective cell within the battery. The E-Scan performed with the Mahle TechPRO revealed a voltage difference of 100 mV between the individual cells, pointing to a defective cell.

This case illustrates the importance of accurate diagnostics for electric vehicles. It’s not just the battery itself, but also the battery management system or individual cells that can be the cause of limited performance.

Thanks to E-Health Charge, it was possible to shed light on this issue—a decisive step towards finding the actual cause and boosting confidence in used electric vehicles.

* WLTP (Worldwide Harmonised Light-Duty Vehicles Test Procedure) describes a new test procedure that determines the consumption of a vehicle.

Our article refers to the first 7 and last 4 minutes (from 33:52 min) in the following video (in German):