Feature:1. Active Inductance Equalization: It will start when the voltage difference exceeds 0.1V, and the equalization accuracy of 50mV is not as high as that of capacitor equalization.2. Simple and Easy to Use: The accuracy is not as good as the balance board of the capacitor type, but it is low in price and high in cost performance among similar products.3. Applicability: Suitable for ternary lithium batteries and iron lithium batteries.4. Balance Current: 1.3A (balance current is related to voltage difference, the smaller the voltage difference, the smaller the balance current).5. Balance Function: The battery protection module has a balance function to maintain the balance of each battery and extend the life of the battery.Specification:Item Type: Battery Active Balancer BoardProduct Material: PlasticModel: NoneIndicator Light: With Working IndicatorScope of Application: Ternary Lithium Battery, General Lithium Iron BatteryProduct Size: Approx.22 x 16 x 4mm / 0.9 x 0.6 x 0.16in (2 Strings)22 x 30.5 x 4mm / 0.9 x 1.2 x 0.16in (3 Strings)22 x 45 x 4mm / 0.9 x 1.8 x 0.16in (4 Strings)Operating Voltage Range: 3.0V-4.5VBalance Start Condition: the Voltage Difference Between Two Adjacent Batteries is Greater Than 0.1VBalance Current: 1.3A (Balance Current is Related to Voltage Difference, the Smaller the Voltage Difference, the Smaller the Balance Current).Package List:1 x Inductance Active Balance BoardNote:1: Start wiring from 0V in order. 0V is the total negative pole of the battery pack. Don't connect the wrong wire, otherwise the chip will be burnt out.2: Use copper wire of 0.5 mm (18AWG) or more for connection. The thicker the cable, the better, and the shorter the better.3: The flashing indicator light indicates that the equalization start failed. Please check whether the connection wire is welded well. If the welding wire is welded correctly and the indicator light is still flashing, it means that the internal resistance of the battery is too large.Start failure, please reduce the equalization current to use (remove all R1 resistors and R2 resistors on the circuit board and interchange, the equalization current is reduced to 0.5A).