1High Accuracy: The tester will produce the most accurate results eve for the dead batteries, to help diagnose the battery problems for faster and more reliable battery repairs. 2Test Capabilities: Car battery tester is calibrated to work on a wide range of 12V batteries with a rating range between 100 CCA to 2000 CCA. Multiple battery types are supported. 3Function: Works accurately and fast to display different parameters such as voltage, internal resistance, cold cranking current, battery capacity, battery health, and state of charge. 4Easy Operation: Allows you to test batteries both in vehicle and out of vehicle. Simply connect the tester's clips with the battery, then it will turn on and be ready to test and analyze the battery. 5Language: Support different language option to help different users. The tester work in English, German, French, Portuguese, Italian, Russian. It is easy to change the language through the setup option.