Named the battery life of electric carsDecember 17, 2019
Geotab has published data detailing how batteries used in electric vehicles run out over time.
Geotab reportedly used data from 6300 fleets and consumer electric vehicles worldwide and found that on average EV batteries lose about 2.3% of their capacity per year. Geotab says that at these rates, most batteries will have a long life in cars that use them.
Research has shown that the way the battery pack is cooled affects its longevity. In one case, the 2015 Tesla Model S battery capacity fell by an average of 2.3 percent annually, while the 2015 Nissan Leaf battery capacity fell by an average of 4.2 percent. Tesla uses a liquid cooling system, while Nissan uses a passive air cooling system.
Geotab indicates that battery pack degradation is not linear. As a result, a slow downturn over the years may be followed by a sharp drop. In addition, many Tesla owners believe that battery charging speed may change over time, as car manufacturers are introducing battery protection updates, as Tesla has done in the past.
Interestingly, the data showed that used electric cars often experience no more severe battery degradation than those that do not travel often and rarely charge. However, the location of the electric vehicle affects battery life. Electric motors working in hot climates decompose much faster than in cold ones. Frequent fast charging also speeds up the battery discharge process.
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