Battery health, like engine health in a gas-powered car, plays a crucial role in keeping an electric vehicle running. Whether you already own an EV or are considering one, maintaining a healthy battery extends the car’s lifespan and helps it retain value. However, buying a used EV without details on battery maintenance can be risky. To help buyers make confident decisions, Autotrader, a Cox Automotive brand, now includes EV battery health scores on its used electric vehicle listings. This feature gives shoppers a clearer picture of battery performance, including usable range, before purchase, Autotrader said.

Factors That Impact EV Battery Health

Climate, driving habits, and charging routines all affect battery longevity. Buyers now have access to EV battery health scores on more than 19,000 used vehicle listings, providing VIN-specific data for better decision-making.

“Used EVs are the best kept secret in car buying since they offer cost savings, energy efficiency, government incentives, newer technology and more,” said Brian Moody, executive editor for Autotrader. “Before you buy, make sure you have information on the vehicle’s battery health. Just like your mobile phone or laptop battery, EV batteries can degrade over time, so understanding its performance and how it was cared for will help drivers understand when or if a used EV’s battery needs to be replaced.”

How Long Do EV Batteries Last?

The U.S. Department of Energy’s National Renewable Energy Laboratory states that modern EV batteries last between 12 and 15 years in moderate climates and between 100,000 and 200,000 miles. Proper care can extend this lifespan even further.

Best Practices for Maintaining EV Battery Health

• Charge Smartly: Keep the battery between 20% and 80% charge to prevent excessive wear.
• Manage Battery Temperature: Extreme heat or cold affects battery performance. If leaving the vehicle unused for a long period, plug it in.
• Stay Updated: EVs require regular software updates, including battery management system updates, to optimize performance.
• Monitor Battery Performance: Slower charging, reduced range, or inconsistent power delivery signal potential battery issues. If problems arise, consult a professional.
• Avoid Sudden Acceleration: Rapid acceleration drains battery life faster. Smooth driving habits improve longevity.