Service function guideEV Battery Health Check

This guide gives professional technicians and informed owners a complete method for performing an EV battery health check that reads range, state of health and charging data from the vehicle and cross-checks it against measured behavior. It explains how the battery management system calculates and reports these values, when a health check is warranted, and how to prepare the car and your equipment so the data you collect is trustworthy. The step-by-step procedure covers connecting a capable scan tool, capturing live data during a controlled charge and discharge, interpreting the results against factory service information, and documenting the outcome for the customer. After working through the guide you will be able to run a repeatable battery health assessment, spot the common mistakes that corrupt the readings, troubleshoot failed or incomplete tests, and advise on aftercare that protects the pack.