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AV-SCANNER / Service function guides / Battery and charging
This guide explains how to register a new battery with the vehicle's battery management system (BMS), a service function that ensures correct charging and electrical load management. It is written for working mechanics and experienced DIYers who already have diagnostic tools and understand basic electrical safety. You will learn the theory behind BMS operation, the preparation and step-by-step procedure, how to verify success, and how to troubleshoot common failures across many vehicle types. After reading, you will be able to perform battery registration confidently and avoid the mistakes that lead to premature battery failure or electrical faults.
Guidance is general and covers many makes. Exact procedures and values vary by model, so confirm them in the factory service information for your vehicle.
Download all 12 sections as a branded PDF to use in the workshop.
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