Last updated October 2026

Disclaimer

BatteryWise is an educational resource about used electric vehicle battery health. This page explains what that means — and what it doesn't.

Educational information only

All content on this site and in the Battery Health Toolkit — the guides, the Battery Deal Checker, the worksheets, and the model profiles — is provided for general education. It is meant to help you ask better questions and understand the numbers before you buy a used EV. It is not a substitute for a hands-on inspection or for advice tailored to a specific vehicle and your situation.

Not professional advice

We are educators, not your mechanic, financial advisor, or attorney. Nothing here is mechanical, financial, or legal advice. Battery diagnosis belongs to a qualified technician with the actual car in front of them; money decisions belong to you and your own advisors.

Estimates, not promises

State of Health figures, degradation rates, and replacement-cost numbers on this site are estimates drawn from published data available as of October 2026. Real values vary by vehicle, climate, charging history, shop, and region — sometimes widely. BatteryWise does not guarantee any specific result or outcome from using this information: a checklist can inform a buying decision, it cannot make one for you.

Third-party services and data

We reference independent third parties — including Recurrent, fueleconomy.gov, and the Alternative Fuels Data Center — because they publish useful data. A mention is not an endorsement, and BatteryWise is not affiliated with those services or with any vehicle manufacturer. Their reports and figures are their own.

Your decision

Every used EV is a specific car with a specific history. Before money changes hands, get the vehicle inspected by a qualified technician and verify its battery health with a report or an OBD2 reading. Questions about this site? Email us at help@doogex.com.