Check the battery of a used electric car
An advert, a year, a mileage. And alongside them, what the battery is really worth: until when the manufacturer covers it, what condition it is likely to be in, whether it is leased and what a failure would cost.
What is this car’s battery worth?
Remaining warranty, expected state of health, battery lease and cost of a failure. All at once — and nothing you enter leaves your browser.
We check, we don’t certify. The date of first registration is shown in box B of the V5C logbook. The state of health given is a range calculated from the battery’s age, mileage and chemistry: only a measurement on the vehicle gives a figure.
Why a range and not a figure
Nobody can know a battery’s state of health without measuring it on the vehicle. Two cars of the same year and mileage can be ten points apart depending on climate, charging habits and use. A website that tells you "87%" without having touched the car is making up a figure — and it is the one you were going to negotiate on.
So we calculate the range in which a comparable battery usually sits, based on its age, mileage and chemistry. The model is calibrated on readings published by Geotab. For an exact figure, you need a measurement on the vehicle.
What we don’t do
We issue no certificate and measure no battery. We have no access to the vehicle, and so none to the only data that really counts. Our work stops where a garage’s begins: telling you what to ask, whom to ask and what the answers mean.