This tester allows you to quickly and accurately check the condition of any 12-volt lead-acid battery, as well as diagnose the starter and alternator for performance. Suitable for 12/24 volt batteries installed in motorcycles, trucks, motorhomes, ATVs, boats and even lawn mowers. The device determines the cause of the fault in just 3 seconds with 99.5% accuracy. Results are displayed on the screen and printed on the built-in printer. The tester is equipped with safety clamps with copper tips, PVC-insulated wire and is protected against polarity reversal. The ABS plastic housing is shock and current leak resistant. In general, it is a modern, safe and informative device for diagnostics of car electrical equipment. It will become an indispensable assistant for professionals and motorists.