Usage Tips:OBD scanner for car engine diagnostic with multi-language support 1、A MUST HAVE TOOL IN YOUR CAR: With the latest testing technology, it can quickly read if your vehicle's battery needs to be jump started or replaced, as well as the status of the alternator output. 2、BATTERY HEALTH CHECK: Applying the latest testing algorithm, it will scan the battery and get the result in seconds, including health status, state of charge, internal resistance and test conclusion. And it can test all types of cars. 3、TURNING GEAR AND CHARGING SYSTEM TEST: Test the alternator starting voltage while turning the engine to see if it is weak or normal. Check the alternator's continuous output while the engine is running to see if the alternator is providing the correct power to the battery and electrical system. You can view all of the test details, including all of the slight ripples in milliseconds, graphically on the screen. 4、MULTIFUNCTIONAL: Built in OBD DTC lookup libraries help you determine why the engine comes on, read codes, erase codes, view freeze frames, I/M readiness, vehicle information, data streams, real time curves, get speed information, calculate load values, engine coolant temperature, and get engine RPM. 5、PROFESSIONAL GRADE DIAGNOSTIC TOOL: The scanner offers professional grade features for home mechanics, automotive enthusiasts, and service and repair technicians. It is a vehicle code reader for reading and clearing OBD engine codes and displaying all vehicle information when a trouble code is triggered.