This board is based on the principle of adjacent equalization and cannot be used as a maintenance tool. To connect to the battery, it must be used with the lithium battery protection board.Inductive working principle:This module is the adjacent voltage difference equalization, the adjacent battery voltage difference reaches more than 0.1V, the chip internal triggers the equalization work, until the adjacent battery voltage difference is within 0.03V and stops workingwhen it is used on the battery pack, there is adjacent voltage difference when charging and discharging Triggering the equalization work, the battery pack voltage error will also be pulled back to an perfect value, reducing battery maintenance costs.Wiring Definition:B-: The negative of the battery pack (the negative of the first battery)B1: of the first battery: of the second batteryB3: of the third batteryB4: of the fourth batteryB. . . . . . N+ and so onTechnical Parameter:1. Working voltage: 2.0V-4.5V2. Universal ternary iron lithium battery3. LTO battery is not applicable Balance Instructions:1. When the equalization light is on, the equalization work is turned on2. The equalization light is off, and the equalization circuit is in sleep state3. The equalization light flashes, indicating that is dropped, or the circuit is faulty.Balance current:1,The adjacent voltage difference is more than 0.1V (the current is about 0.5-0.7A)2,Adjacent voltage difference is more than 0.2V (maximum equilibrium current is 1.2A)3,The smaller the voltage difference, the smaller the equalizing current.Colour:blackMaterial:PCBBatch size , the on the module may be screen printed differently, it does not affectPackage Contents:1 x Active Equalizer Balancer1 x Cable (random colors, 't accept the specified color)Only the above package content, other are not included.Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.