The app provides Bluetooth data visual management function for daily battery maintenance, including equipment list, operation status, fault alarm, current and voltage and other information. 1. Equipment list Search the nearby battery devices through Bluetooth, display the list of battery devices, and search through the device ID. 2. Main information Voltage, rated capacity, current, battery temperature, charge and discharge state, number of cycles, calibration SOC. 3. Details Voltage 1 ~ n, differential pressure, full charge capacity, residual capacity, system charging or discharging state, system fault alarm and system protection information.