EV Battery Degradation Estimator
Most EV batteries lose 2 to 3 percent of capacity per year. After 10 years, expect 75 to 85 percent of original range.
60 kWh battery, 272 mi EPA range
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CAPACITY AT YR 393%
Your 2024 Tesla Model 3 at 2.3%/yr estimated degradation. About 254 miles of range today, 18 miles lost versus new.
How to Maximize Your EV Battery's Lifespan
EV battery degradation is inevitable, but the rate at which it happens is largely within your control. Here are the most impactful steps you can take to keep your battery healthy for as long as possible.
Charge to 80% for Daily Driving
Lithium-ion batteries experience the most stress at very high and very low states of charge. Keeping your daily charge limit at 80 percent (or whatever your manufacturer recommends) reduces stress on the cells and can add years of usable life. Save the 100 percent charge for road trips when you actually need the extra range.
Minimize DC Fast Charging
DC fast charging is convenient but generates significantly more heat than Level 2 charging. Heat is the number one enemy of battery longevity. If you can charge at home on Level 2 for your regular needs, your battery will thank you. Using DCFC occasionally for road trips is perfectly fine.
Avoid Extreme Heat Exposure
Parking in the shade, using a garage, and pre-conditioning the battery while plugged in are simple ways to reduce thermal stress. Vehicles parked in consistently hot climates (like Phoenix or Houston) tend to show faster degradation than those in mild regions.
Drive Regularly
Batteries do better when they cycle regularly than when they sit at a fixed state of charge for weeks. If you store your EV for extended periods, keep the charge level around 50 percent and check it periodically.
Frequently asked
Most modern EV batteries lose about 2 to 3 percent of their capacity per year under normal conditions. After 10 years, a well-maintained battery typically retains 75 to 85 percent of its original capacity. Factors like extreme heat, frequent DC fast charging, and regularly charging to 100 percent can accelerate degradation.
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