Yes, gradually, the same way a phone or laptop battery slowly holds less charge over years of use. EV batteries degrade over time and mileage, but generally at a slow enough rate that it’s a background consideration rather than a dealbreaker for most owners, and manufacturers back this with meaningful warranty coverage.
What degradation actually looks like
Battery degradation shows up as a gradual reduction in maximum range, an EV that could originally travel 250 miles on a full charge might, after several years and many thousands of miles, max out closer to 230 or 220. It’s rarely a sudden drop, more a slow decline that many owners barely notice year to year, especially since typical yearly degradation tends to be a small single-digit percentage under normal conditions.
What speeds it up
| Factor | Why it matters |
|---|---|
| Frequent DC fast charging | More heat and stress on the battery compared to slower AC charging, especially if done very frequently. |
| Regularly charging to 100% and letting it sit | Keeping a battery at full charge for extended periods can accelerate degradation more than keeping it in a moderate range. |
| Extreme heat exposure | Hot climates and repeated exposure to high temperatures tend to accelerate degradation more than cold ones. |
| High mileage and age | More charge cycles and more time in service both contribute, similar to any rechargeable battery. |
For more on the day-to-day habit that affects this most directly, see our post on whether you should charge to 80% or 100%.
Warranty protection
Most manufacturers back EV batteries with a warranty specifically covering excessive degradation, commonly around 8 years or 100,000 miles, guaranteeing the battery won’t drop below a specified capacity threshold within that period. Terms vary by manufacturer, so it’s worth checking the specific warranty for any EV you’re considering, especially when buying used.
💡 Tip: Buying a used EV and want to check the battery’s actual health before purchasing? Our Used EV Battery Health guide covers what to look for.