EV batteries might last a lot longer than we thought (AirQualityNews)

Researchers in America have found that the way we have been testing the lifespan of electric vehicle batteries is flawed and most may last around 40% longer than previously thought. The traditional way to test how long a battery is likely to remain effective has been to repeatedly charge and discharge it. Almost always the battery is discharged at a constant rate, something that is very unlikely to happen in a real-world scenario. 

As such, a team from the SLAC-Stanford Battery Center has been discharging batteries under a variety of different conditions and found that, counter-intuitively, a more realistic scenario in which a car might make long and short journeys and, of course, be frequently stuck in traffic adds to a battery’s longevity rather than reduces it.

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