Autool FOXWELL BT-705 Battery System Tester for 6V & 12V Regular Flooded, AGM Flat Plate, AGM Spiral, Gel Batteries and 12V & 24V Starting and Charging System Battery test analyzes the working condition of the battery for 12V or 24V charging system and make sure your battery functions well. Charging system test decodes alternator information and troubleshoots faulty charging system. Cranking test displays the decision on the starter system, cranking voltage, and cranking time in milliseconds. Multi-language systems are available on language menu-English, Spanish, French, German, Dutch Its constructed to resist impact and damage in the tough workshop environment, A rubberized sleeve protects your investment. To secure fit, extra corner padding and screen protector ensure your tool will be around for a long time.