1. Check various battery parameters, such as total voltage, single cell voltage, current, temperature, SOC, battery status, alarm information, etc. 2. Set various battery parameters, such as battery type, number of strings, protection voltage, protection current, protection temperature, balancing parameters, system parameters, etc. 3. Battery control, such as charge and discharge MOS control, system shutdown, system restart, factory reset, etc. 4. Firmware upgrade, Bluetooth upgrade battery firmware;