ANCEL AD530 OBD2 vehicle scanner is designed for both professional mechanics and home-use customers. It supports full OBD modes and it has a special battery tester function that allows you to monitor the real-time battery status. It supports lifetime free updates, and in fact, our technical team is constantly updating its database and software. You don't have to worry about its fluency, we use a new generation of 32 MB flash memory chips, equipped with our unique "Help" button to help you understand the complex professional vocabulary to ensure a pleasant user experience.