Battery Test BT508/506 Battery & Electrical System Tester Easy-to-use Battery Diagnostics The Battery Test app, together with the lightweight battery and electrical system tester BT508 or BT506, provides a quick health check of the vehicles battery and electrical systems. This free and easy-to-use mobile app enables technicians to view more accurate test results and learn about the true health of their batteries, starters and generators. Highlights and Features Support in-vehicle and out-of-vehicle testing of passenger vehicle batteries Test 6- and 12-volt batteries: 100 - 2000 CCA Test 12- and 24- cranking/charging systems Test Flooded, AGM, AGM Spiral, EFB and GEL batteries Compatible with CCA, CA, SAE, EN, IEC, DIN, JIS and MCA One-touch battery registration (BT508 only) Illustration instruction guides for battery positioning and testing (BT508 only) Read and erase codes of all available systems (BT508 only)