Sounds vaguely like dynamic balancing. I heard about it years ago, not new.
The usual way battery packs in BEVs are balanced is "top balancing". While charging all the cells to the same voltage by using bypass resistors to "balance" the pack by switching in the resistors to discharge the cells that have higher voltages. While discharging, the pack takes the exact same current out of each cell, when the cell with the smallest capacity and thus the lowest voltage hits a lower limit the pack is empty. Notice that the cell with the smallest capacity sets the limit for the pack, and the cell with the smallest capacity is working the hardest and thus will have the most cycling wear.
Dynamic battery balancing, by one of several methods, keeps the voltage in the cells the same as they are discharged. This levels the cycling wear on the pack, and reduces wasted energy in balancing resistors, and slows wear and provides more usable capacity, especially as the battery pack ages.
Most everything around here is wet during the rainy season. And the rainy season is long.
2012 Leaf SL Red (Totaled)
2014 Leaf SL Red