Battery · Free EV tool

EV Battery Health Estimator

Turn your range and consumption into an estimated usable-capacity band. See what the numbers can—and cannot—tell you.

Your vehicle, your numbers

Example numbers are prefilled. Replace them with your vehicle data and local prices. Currency changes the label, not the exchange rate.

kWh
Use usable (net) capacity, not gross capacity.
km
km
Use a 100% range estimate from the same conditions as the consumption figure.
kWh/100 km
Use battery-side driving consumption, not energy from your electricity bill.
%
Optional: transcribe a diagnostic report. EVVerity cannot verify it.
%
±10% is an illustrative sensitivity band, not a statistical confidence interval.

Your inputs stay in this browser. No sign-up.

Your results

Transparent by design

A clearer picture starts here.

Review the example inputs, then calculate. We show the assumptions alongside your result.

Why is this an estimate?

Age, mileage and charging habits provide context. They are not enough to establish the condition of an individual battery.

Read our methodology

EVVerity estimates are informational and are not a substitute for a professional battery diagnostic or pre-purchase vehicle inspection.

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See how the calculation works

Usable capacity ≈ full-charge range × battery-side consumption ÷ 100. Degradation = (1 − estimated capacity ÷ original usable capacity) × 100.

Age, mileage and charging habits provide context. They are not enough to establish the condition of an individual battery.

Start with comparable information

Check the units, time period and vehicle configuration behind each number. Use battery-side driving consumption for capacity estimates. Energy billed by a charger also includes losses and may include thermal management.

Vehicle specifications describe a version when new. A user-supplied report describes a particular vehicle at a particular time. Our calculations keep those two kinds of information separate.

Methodology, assumptions & confidence →
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Keep the picture in focus

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Read the relevant evidence