Specification:Item Type: Battery Active EqualizerApplicable Battery: Li ion NCM, LFP. Single Cell Voltage: 3.0-4.2VRecommended Battery Capacity: Below 30AHVoltage Balance Accuracy: 30mV between adjacent voltages, typical. Equalization Method: It is detected that the voltage difference between adjacent batteries is greater than 0.1V to trigger the equalization, and the voltage difference between adjacent batteries is less than 0.03V to stop working. Balance Current: 0.1V voltage difference and 0.5A balance current, when the voltage difference is above 0.2V, the maximum balance current is 1.2A.Under voltage protection sleep voltage: The adjacent voltage difference is less than 0.03V and enter the sleep state.Quiescent Operating Current: 0.01mAHow to Use:1. When the balance indicator light is on, the balance work is on. 2. The balance indicator light is off, and the balance circuit is dormant.3. The balance indicator light is flashing, it's power failure or circuit failure. Package List:1 x Battery Active Equalizer1 x CableNote:1. It is not recommended to be compatible with low strings, the indicator light will flash and report an error. Be sure to check that each cell is properly wired and insulated before connecting the balancing board. Otherwise it will short circuit and burn the board.2. If the battery is connected, it must be used with the BMS protection board. The charge and discharge voltage difference triggers the balance board to work to achieve energy transfer balance.