Summary
- EV batteries are proven to last between 10 and 20 years, even longer than previously forecasted
- DEKRA developed a rapid battery test for EVs that takes 15 minutes and is available for 130 different models in Europe
- The test compares actual results to a parameterization of individual vehicle models to determine battery condition
- DEKRA found that most traction batteries are in good condition, even with higher mileages
- An example of durable batteries is seen in Jaguar I-Pace electric taxis that retain 95-97% state of health after 180,000-260,000 kilometers of use.
Article
The belief that EV batteries will quickly wear out has been debunked as studies show that most EV batteries are likely to last between 10 and 20 years. Real-world examples of long-serving batteries, such as those in Tesla taxis, support these findings. The SLAC-Stanford Battery Center also found that EV batteries are likely to last even longer than previously forecasted, further dispelling the myth of short battery life.
German testing organization DEKRA has developed a standardized test to measure the health of individual EV batteries, completing over 25,000 tests using this procedure. The data collected from these tests show that electric car batteries are more durable than consumers may fear. This rapid test, introduced in 2022, is available for around 130 vehicle models in several European countries, taking only 15 minutes to complete and providing accurate results on battery condition.
DEKRA’s testing procedure includes a static test and a short drive to analyze the battery’s health. By comparing the real-world results to the specific parameterization of each vehicle model, DEKRA can provide precise evaluations of the battery’s condition. This method allows for quick and accurate assessments of battery health, offering insights that other methods on the market may not provide.
The growing data pool from DEKRA’s tests allows experts to make general statements about battery aging, indicating that the majority of traction batteries remain in good condition even with higher mileages. An example cited by DEKRA is a fleet of Jaguar I-Pace electric taxis in Munich, where test results showed that the batteries maintained a state of health between 95 and 97 percent despite mileages of 180,000 to 260,000 kilometers.
Gregor Beiner, Managing Director of the Munich Taxi Centre, highlighted the durability of EV batteries in the Jaguar I-Pace taxis, noting that the batteries retained their capacity over time. Despite frequent charging and full charges for safety measures, the batteries remained in good condition. Overall, DEKRA’s tests and real-world examples continue to support the longevity of EV batteries, debunking the myth of short battery life and showcasing the durability of electric vehicles.
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