While some car manufacturers give an information about the state of health of the battery, it is not clear to the consumer what this number actually means.
“Just say car manufacturer X says the battery is at 80%,” explains Wolfgang Berger. “That 80% might mean something very different to car manufacturer Y, which is why it’s vital to have a standardized and independent testing system when it comes to the second hand EV market. Creating an independent industry standard that can only be done by an independent company guarantees that all the different models are tested the same way, and that all the underlying calculations and algorithms are working in the exact same way.”
Why the test is needed
There is a big difference in the degradation between batteries in different models of cars, and even differences between the same model – which is why the Aviloo test is an important addition to the market.
“Generally speaking, you can roughly judge a combustion engine car by the year of the model, the make, the mileage and other common factors. By looking at those you more or less know the value of the car,” says Berger. “When it comes to an EV, though, the degradation of the battery depends on a lot of different parameters, such as how the car has been treated by the previous owner.
“For example, high charging speed is not good for the battery, nor is high or extreme acceleration, so if the previous owner did some racing on the weekends, the battery life will be very different from the same car and model that was carefully driven around on quiet suburban streets.