Study: how the power reserve of the electric vehicle decreases for the year

Study: how the power reserve of the electric vehicle decreases for the year


It is no secret that the traction battery of the electric cars over time lose their maximum capacity. But how, exactly?

To deal with this issue, the company Geotab conducted a study examining the data for 6300 electric vehicles, which are operated in private hands and corporate parks. Conducting the necessary calculations, the experts found that, on average, the batteries of electric vehicles degrade approximately 2.3% per year, according to Quartz.

This figure is quite permissible norm and indicates that the batteries of electric cars “live” no less than the cars themselves. Contrary to earlier rumors were circulating.

Experts stressed that battery life is affected by many factors, including cooling system battery. For example, they brought two electric vehicle, which were both released in 2015 – Tesla Model S and Nissan Leaf. The American electric car battery lost per year is approximately 2.3% of the initial capacity, while the battery is “Japanese” fell on average by 4.2%. In electric cars Tesla uses a liquid cooling system, whereas in the “Nissan” – passive air cooling system.


In addition, the battery affects the climate. The colder it is the less degradation and Vice versa – the hotter, the greater the loss of capacity. Also your negative trail leaves the frequent use of quick charging, and the frequency of charges, to the surprise of many, does not affect the condition of the car.

However, Geotab emphasize, rightly, that taking the results at face value is not necessary, since the degradation of the battery is not a stable process: first, the capacity drop can be negligible, and after some time to increase dramatically.

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