Should you avoid fast charging to preserve your electric car’s battery? This is a question that many owners ask, and a study recently carried out by the Austrian start-up Aviloo, which specializes in the analysis and diagnosis of batteries, should provide the first elements of an answer.

For this, the company conducted its own research 160 models of different brands in three years. According to the findings of the study, the conclusion is obvious, Fast charging has been proven to accelerate battery aging from the first charge.

Accelerated battery discharge

This was shown by a study conducted by Aviloo Battery Diagnostics the heat generated by fast charging stations damages battery cell components.

The figures show that compared to vehicles that do not have the “fast charging” function, the battery life of the test vehicles is reduced by about 17% between 180,000 and 200,000 kilometers and by 7.5% for the rest. sample with mileage from 80,000 to 100,000 km.

Thus, the startup concludes that the health of batteries significantly deteriorates with increasing mileage and more frequent use of fast charging. Especially, Exclusive use of fast charging can lead to accelerated battery discharge.

More and more powerful terminals

According to this study, fast charging is harmful to batteries in the long term, despite the presence of regulatory systems in charging stations and electric vehicles.

Francois Gatineau, president of the e-mobility consulting company Mobileese, notes that charging an electric car “several parameters must be taken into account, such as outdoor and indoor temperature, humidity, as well as the battery’s state of health, measured by indicators such as “SoH” (State of Health), the number of charge/discharge cycles, and the battery’s year of manufacture”.

Remember that the top-up is announced as “quick” from a power of 43 kW, supplied in direct current (DC). Therefore, this term hides terminals with very different characteristics, some offer today almost 400 kW.