Battery life has been an area of concern for electric car buyers, with early-stage models managing very poor batteries and cutting their capacity very well over time, according tomedia. While Tesla uses advanced battery management technology to ensure its batteries last longer, it still can’t escape the fate of degradation over time.
To reassure buyers, Tesla offers an eight-year or 150,000-mile warranty on batteries for its high-end models. Tesla today updated its warranty to make its failure conditions clearer.
The specific update information is as follows:
Model S and Model X – 8 years or 150,000 miles, whichever expires first, with a minimum of 70% of the battery capacity during the warranty period (except for the original 60 kWh battery manufactured before 2015, warranty 8 years or 150,000 km, whichever comes first);
Model 3 and Model Y – 8 years or 100,000 miles of Standard or Standard Mile Plus, whichever comes first, to retain at least 70% of the battery capacity during the warranty period;
Long Mile age or high-performance versions of the Long Range or Performance Model 3 and Model Y – 8 years or 120,000 miles, whichever comes first, and retain at least 70% of the battery capacity during the warranty period.
Tesla is understood to be working on a million-mile battery, but in practice a 30 percent loss of capacity is already unusual, and many older users will have more than 90 percent of their battery capacity. The move could be linked to Tesla’s increasingly common commercial use in carpooling and other applications, which could put more pressure on the system than usual.
Tesla will hold a Battery Day event sometime in March, when they will discuss next-generation battery technology, which is expected to widen the already huge gap between Tesla and other car companies.