A new battery in the Chevy Bolt EV or Bolt EUV is guaranteed to last at least 8 years or 100,000 miles. According to posts on the Chevrolet Bolt EV Forum, the average Chevy battery degrades at a rate of 6 to 8% after 100,000 miles. Batteries typically last 3-5 years, but this varies depending on the type of battery, weather conditions, driving habits, and other factors. Chevy GM provides an 8-year, 100,000-mile warranty, whichever comes first, and after 100,000 miles, each kWH battery capacity has been used for 4,755 miles.