1.Check Engine Code Reader: The T300 car scanner diagnostic tool can easily determine the cause of the check engine light coming on, quickly read and clear diagnostic trouble codes, read live data hard memory data, view ze frame, I/M monitor readiness and collect vehicle information. Instead of taking car to mechanic shop, you can use it to check the trouble code and show code definition by yourself. 2.2 IN 1: This T300 vehicle code reader is ALSO a battery tester, supporting various battery types (including flooded, AGM, GEL, EFB) for cars, trucks, hybrids, SUVs, boats, RVs, and motorcycles. Complies with multiple standards (JIS, EN, DIN, SAE, CCA, BCI, GB, CA, MCA, and IEC), ensuring comprehensive testing for all requirements. Notice:It's not compatible with 6V batteries and is not suitable for use with lithium batteries. 3.Accurate Fast and : This T300 OBD2 scanner can help you or your mechanic understand if your car is in good condition, provides exceptionally accurate and fast results, reads and clears engine trouble codes in seconds. If you want to find out the cause of the check engine light, this device will let you know immediately and fix the problem right away without any car knowledge. It gets power directly from the OBDII Data Link Connector in your vehicle. 4.OBDII Protocols and Car Compatibility: Many cheap scan tools do not really support all OBD2 protocols. This is not the case with the T300 car code reader as it can support all OBDII protocols such as KWP2000, J1850 VPW, ISO9141, J1850 PWM and CAN. This device also has extensive vehicle compatibility with 1996 USbased, 2000 EUbased and Asian cars, light trucks, SUVs, as well as er OBD2 and CAN vehicles both domestic and foreign. Check compatibility with your vehicle model before purchasing. 5.For DIYERS: This vehicle code reader T300 is 'plug and play' and comes with an easy interface. Even if you're not familiar with vehicle repair, you can quickly take control of this obd2 scanner, and get the information you want.