Buying a used EV, selling yours, or just curious? Get an instant State of Health estimate built from real-world degradation data for 55+ models.
A replacement runs $5,000–$20,000. Know where it stands before you buy, sell, or keep driving.
Degradation curves built from fleet data and owner-submitted readings
See how a battery compares with identical make, model, and year
Know instantly if the battery is still covered — and for how much longer
Hand a professional report to a buyer, seller, or dealer
Understand what battery health means for the price of the car