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AV-SCANNER / Accessory guides / Battery and electrical
This guide covers the complete use of a battery tester and clamps for assessing battery health and making safe connections, written for motorists and working mechanics who need reliable electrical diagnostics. You will learn how to choose the right tester, set it up, connect clamps correctly, run tests, and interpret results with worked examples. The guide also walks through real diagnostic jobs, common mistakes, care and calibration, and the point at which a professional should be called. After reading, you will be able to perform accurate battery tests and make informed decisions about battery replacement or further electrical diagnosis.
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 11 sections as a branded PDF to use in the workshop.
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