General description The AERMOTOR BM300 Battery Tester is a specialized application assistant designed for car batteries. This practical tool allows users to monitor the real-time voltage of their car battery and other related information directly through their mobile phone. It provides insights into the car's starting and charging systems, enabling users to fully understand the battery's data and characteristics. Technical specifications Working voltage: 6V-18V Working temperature: -40 to 60℃ Material: ABS Color: Black Installation Connect the red end to the positive pole of the battery. Connect the black end to the negative pole of the battery. Usage For Android: Open mobile settings, enable Bluetooth, select the pairing app, and connect. After successful connection, enter the app to view data. For iOS: Ensure Bluetooth is on, open the app, and connect through the device management settings to test after connection. Other information Package Contents: 1 x Automotive Battery Tester