Can EV batteries predict life expectancy?

This is not a good way to predict the life expectancy of EV batteries, especially for people who own EVs for everyday commuting, according to the study published Dec. 9 in Nature Energy. While battery prices have plummeted about 90% over the past 15 years, batteries still account for almost a third of the price of a new EV.

How long do lithium-ion batteries last?

The research team tested 92 commercial lithium-ion batteries for more than two years across the discharge profiles. In the end, the more realistically the profiles reflected actual driving behavior, the higher EV life expectancy climbed. Several factors contribute to the unexpected longevity, the study finds.

Can a real-world stop-and-go battery make a battery last longer?

Consumers’ real-world stop-and-go driving of electric vehicles benefits batteries more than the steady use simulated in almost all laboratory tests of new battery designs, Stanford-SLAC study finds. The way people actually drive and charge their electric vehicles may make batteries last longer than researchers have estimated. | Cube3D

Do new battery designs have a good life expectancy?

Almost always, battery scientists and engineers have tested the cycle lives of new battery designs in laboratories using a constant rate of discharge followed by recharging. They repeat this cycle rapidly many times to learn quickly if a new design is good or not for life expectancy, among other qualities.

Are EV battery discharge rates balancing time aging and cycle aging?

The study identifies an average discharge rate sweet spot for balancing time aging and cycle aging, at least for the commercial battery they tested. Luckily, that window is in the range of realistic consumer EV driving.

Are EV batteries worth the extra miles?

While battery prices have plummeted about 90% over the past 15 years, batteries still account for almost a third of the price of a new EV. So, current and future EV commuters may be happy to learn that many extra miles await them.