BK100 product functions and features: BLUETOOTH 5.0 CAR BATTERY TESTER Compatible with all IOS and Android system cellphones and tablets. BK100 can test all 6V 12V 100-2000CCA batteries including regular flooded, AGM flat plate, AGM spiral, or GEL batteries. Provides overall analysis of batteries health and helps you know its status in advanced before it dies. BK100 battery tester supports cranking and charging system test also alternator and starter test. DISPLAY OVERALL BATTERY DATABK100 6V and 12V Battery Load Tester gives you the basic battery parameters such as voltage, internal resistance, cold cranking amp and AH capacity, battery health and charge status. Additionally, battery cca tester will also show you professional advices whether to replace or charge the battery or not. And it can switch up to 13 languages for various needs.