1Test 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. 2Testing of vehicle cranking system test, cranking time, voltage and status. Vehicle charging system testing load voltage, noload voltage, ripple status and charging system status. 3Support 8 languages, English, German, French, Dutch, Russian, Spanish, Italian and Portuguese. Free system upgrade. Compatible with all 12V cars. 4Can repair the car battery to restore battery capacity, extend battery life, and improve battery performance. 5It can charge the car battery. One 12V 4Ah100Ah car battery can be fully charged in 12 hours.