The Daly 1A Active Balancer Module ensure that every cell within a battery pack is balanced with each other during charging, discharging or storage.

The BMS has a passive balance funtion built-in which applies resistance to the higher cells within a bank only while charging to attempt to keep them balanced with the cell with lowest state of charge.  The Active Balancer will actively trade current between cells with a higher state of charge to the cell with the lowest state of charge ensuring that very cell is balanced.