・Aermotor Battery Tester is an application assistant specially designed for automotive batteries. This is a practical APP that allows users to check the real-time voltage of the car battery and other related information in real time through their mobile phones ・It can monitor the voltage of the car's starting system and charging system in real time,helping users fully understand the data and characteristics of the car battery ・Transfer data to your phone via Bluetooth,then enter the APP for real-time viewing Specification: ・Model: BM300 ・Working voltage: 6V-18V ・Working temperature: -40-60℃ ・Function: Low-power protection chip,effectively protects the battery power consumption. If the voltage exceeds 20V or the product temperature exceeds 60℃,the chip will enter the protection mode and stop working. Wait until the voltage is normal and the temperature is normal to continue working normally How to operate: ・For Android: ・Open the phone settings - Bluetooth-compatible - select pairing AERMOTOR-app,enter the APP after the connection is successful,click the settings icon in the upper right corner,find the AERMOTOR-app in the device management to connect,and test after the connection is successful. ・For IOS: ・Open the phone settings - make sure Bluetooth-compatible is turned on and directly enter the APP,click the settings icon in the upper right corner,find the AERMOTOR-app in the device management to connect,and test after the connection is successful. ・Install the red end on the positive terminal of the battery. ・Install the black end on the negative terminal of the battery. Package included: ・1 x Car Battery Tester