Most modern EV batteries lose around 1–2% capacity per year in normal UK use. After 8 years you're typically looking at 85–90% of original range. Heavy rapid-charging and constant 100% charges accelerate it.
Battery degradation is the biggest question UK EV buyers ask. Here's a straight answer from someone who sees real-world EV battery health on the diagnostic regularly.
Does fast charging damage my EV battery? — Occasional fast charging is fine. Doing it as your main daily charge accelerates degradation noticeably over 5+ years. Use a 7kW home charger for daily, fast chargers for long trips.
At what point should I worry about degradation? — Under 80% state of health before the warranty expires — get it tested and lodge a warranty claim with proof.
Bob's Mechanical Repairs — independent family-run garage in Birnam, Dunkeld, Perthshire. Call 01350 727 276 or email [email protected].