The Polar Bear battery management system is connected to the active equalizer via Bluetooth to monitor the battery status, collect, store and process information in real time during battery operation. Easy for after-sales management. 1. Real-time display of voltage, current, power, internal resistance and other parameter values, and display these values in the form of instrument panels and numbers; 2.Record battery data using a chart timeline. Easy to use 3. Each battery cell data comparison shows the voltage difference. Maximum cell voltage, minimum cell voltage. And the cell balance indicator 4. Cell temperature warning. Real time alarm for over temperature, short circuit, over voltage, under voltage 5. Displays the real-time voltage and alarm status of each individual battery. If the reported parameters trigger the alarm value or protection value, an alarm will be triggered; 6. New error reporting function I hope Polar Bear can help you learn more about the convenience of battery usage Best regards!