GoKawiilGeotab study links frequent DC fast charging and heat to faster EV battery wear
Fleet-data firm Geotab analyzed EV charging patterns and found that vehicles using DC fast charging for 12 percent or more of sessions degraded at 2.5% annually versus 1.5% for infrequent fast-chargers. Combining frequent fast charging with high power (over 100 kW) pushed degradation to about 3%, and cars in hotter climates degraded roughly 0.4% faster than those in milder regions.