EV Battery Health Checker
Estimate your electric vehicle’s battery degradation, check warranty status, and get personalized maintenance tips — all in under 2 minutes.
Your Battery Health Report
Excellent condition — minimal degradation.
🔧 Maintenance Tips
- Keep your battery between 20% – 80% for daily use.
- Avoid frequent DC fast charging in hot weather.
- Use scheduled charging to avoid holding 100% charge.
🔍 Get a Professional Diagnostic
This estimate is a helpful guide. For a definitive battery health report, connect with a certified EV diagnostic specialist near you.
Find a Diagnostic Specialist →🔗 Affiliate partner — we may earn a commission at no extra cost to you.
How We Calculate Battery Health
Our estimate combines calendar aging (time-based degradation), cycle aging (mileage-based), charging habits, and climate conditions to produce a reasonable State of Health (SOH) percentage.
📊 Based on public research data and real-world EV fleet studies. Always consult a professional for a definitive diagnosis.
Frequently Asked Questions
State of Health (SOH) is a measure of your EV battery’s current capacity compared to when it was new. A SOH of 90% means the battery can hold 90% of its original charge. Most EVs retain 80–90% SOH after 100,000 miles.
This tool provides a reasonable estimate based on industry research and average degradation curves. Accuracy is typically within ±3–5% for most models. For a definitive assessment, we recommend a professional OBD-based diagnostic.
The top factors are: age (calendar aging), mileage (cycle count), fast charging frequency, and ambient temperature. Extreme heat and frequent DC fast charging can accelerate degradation significantly.
Consider a professional diagnostic if: you’re buying a used EV, your estimated SOH is below 70%, you’ve noticed significant range loss, or you’re approaching the end of your battery warranty period.
We support 20+ popular EV models with model-specific battery data. For models not listed, we use a generic profile based on average EV battery characteristics. The estimate will still be useful but less precise.
Related Tools
More tools coming soon.