1、Test the accurate results of the IN/OUT of the battery to the vehicle in milliseconds, using Good or Replace to analysis results. It is suitable for all car crank batteries based on CA, CCA, BCI, MCA, JIS, SAE, EN, DIN and CA, including AGM flat batteries, AGM spiral batteries, EFB and gel batteries. IECS standard. 2、Testing of vehicle cranking system test, cranking time, voltage and status. Vehicle charging system testing load voltage, no‑load voltage, ripple status and charging system status. 3、Support 8 languages, English, German, French, Dutch, Russian, Spanish, Italian and Portuguese. Free system upgrade. Compatible with all 12V cars. 4、Can repair the car battery to restore battery capacity, extend battery life, and improve battery performance. 5、It can charge the car battery. One 12V 4Ah‑100Ah car battery can be fully charged in 12 hours.