One of many beloved bugaboos bruited by EV boo-birds is that EV batteries will rapidly put on out. Now that there are vital numbers of high-mileage EVs on the street, this deceitful dirge has been definitively debunked. Automobile and Driver (amongst many different sources) estimates {that a} typical EV battery ought to final between 10 and 20 years (the common new automobile within the US is predicted to final 12.5 years). A latest examine by scientists on the SLAC-Stanford Battery Heart discovered that almost all EV batteries are prone to final even longer than researchers had beforehand forecast. Actual-world accounts of long-serving batteries, for instance in Tesla taxis, abound.
Scientific research and particular person anecdotes give us two views on battery longevity—a standardized check that measures the well being of a person EV’s battery offers us one more. German testing group DEKRA has developed simply such a check, and has now accomplished greater than 25,000 state-of-health exams utilizing its patented process. Primarily based on the info collected, DEKRA experiences (through Electrive) that “the batteries of electrical automobiles are extra sturdy than shoppers generally worry.”
DEKRA’s fast battery check, which was launched in 2022, is at present out there for round 130 completely different car fashions and is obtainable in a number of European international locations. The process takes quarter-hour, and features a static check and a brief acceleration drive of round 50 to 100 meters.
The actual-world outcomes of a person check are in comparison with the “parameterization” of the person car fashions, which incorporates knowledge gathered from advanced check drives underneath all kinds of circumstances. “This creates a form of coordinate construction that our system makes use of to research and consider the precise measured values throughout the check,” explains Christoph Nolte, Government Vice President of DEKRA. “The underside line is an announcement on the battery situation that no different methodology in the marketplace can provide as rapidly and similtaneously exactly.”
The rising knowledge pool allows the DEKRA consultants to make extra normal statements about battery growing old, they usually say that “even with larger mileages, the overwhelming majority of traction batteries are nonetheless in good situation.” As one instance, DEKRA cites a fleet of Jaguar I-Tempo electrical taxis that went into service in Munich in 2018. DEKRA examined six of the automobiles in 2024, and located that, with mileages between 180,000 and 260,000 kilometers, the state of well being of the traction batteries was between 95 and 97 p.c.
“On common, we charged the automobiles about one and a half instances a day, and never significantly gently, however all the time absolutely charged to provide the drivers the suitable stage of security when it comes to vary,” stated Gregor Beiner, Managing Director of the Munich Taxi Centre (MTZ). “The batteries are very, very sturdy and, particularly with the protection buffers that the producers set up, they preserve their capability for a really very long time.”
Supply: Electrive
