CURRENT CAPACITY
93.3%
EV Battery Degradation Estimator
At these settings this battery keeps about 93 percent of its original capacity after 3 years. Heat, frequent DC fast charging, and sitting at 100 percent wear it fastest.
75 kWh battery, 363 mi EPA range
3 yrs
0 yrs15 yrs
12000 mi/yr
5000 mi/yr30000 mi/yr
Advanced inputs
Battery health
CAPACITY AT YR 393%
Your 2026 Tesla Model 3 Premium RWD at 2.3%/yr estimated degradation. About 339 miles of range today, 24 miles lost versus new.
93%
CAPACITY
REMAINING KWH
69.9 kWh
REMAINING RANGE
339 mi
YEARS LEFT TO 80%
6.6 yr
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.
FAQ
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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