The PowerSync intelligent battery management system is connected with the active equalizer through Bluetooth to monitor battery status, collect, store, and process information during battery operation in real time, and exchange information with external devices to solve the safety, ease of use and safety of lithium battery systems. The key issue of service life is to extend the service life of the battery and enhance the stability of the battery after grouping. 1. Display the real-time voltage, current, power, internal resistance and other parameter values in the form of dashboard and digital display; 2. Display the real-time voltage and alarm status of all single cells. If the reported parameter triggers the alarm value or protection value, an alarm will be prompted ; 3. Comparison of data of each cell, voltage difference. Maximum voltage cell Minimum voltage cell. And the display of cell balance 4. Cell temperature warning. Over-temperature, short-circuit, over-voltage, under-voltage real-time alarms 5. Record the alarms that occur at each moment.