Battery Degradation Calculator

How It Works

Modern EV batteries degrade slowly — typically losing 2-3% capacity per year under normal use. After 8 years, most EVs retain 80-85% of their original battery capacity. Key factors that accelerate degradation include frequent DC fast charging (which generates more heat), extreme heat exposure, regularly charging to 100% or draining to 0%, and high mileage. Best practices to preserve battery health: charge to 80% for daily driving (only 100% before road trips), avoid letting the battery sit at very low charge, use Level 2 home charging when possible, and park in shade or a garage in hot climates. Most manufacturers warranty batteries for 8 years or 100,000 miles with a 70% capacity guarantee.