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Longer than most people fear. On average, batteries lose about 2–3% of capacity a year, and very few are ever replaced outside of recalls.
Updated Sep 28, 2026 · 4 min read
Frequent DC fast charging (Geotab saw up to ~3.0% a year for heavy fast-chargers) and hot climates (about 0.4% a year more).
Of the 40 models in our car data with a published battery warranty, 28 cover the battery for 8 years / 100,000 miles and none cover less than 8 years. Genesis, Hyundai, Kia and the Volvo EX60 cover 10 years. Every car page lists that car’s own warranty and links the automaker’s page. Check the capacity threshold in the fine print.
Get a battery health report before you pay.