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For battery packs that are built as a stack of cells, like Zero's [[Brick]] core battery pack unit, cell balance indicates the maximum difference in per-cell voltages, that is the difference between the highest voltage cell and the lowest voltage cell.
;Notes
: ''Cell imbalance'' means a high difference in voltages, and is the inverse of ''cell balance''. ''Cell balancing'' reduces cell imbalance.
: A cell at a lower voltage will operate worse than one at a higher voltage, and an EV must operate with all its cells above a certain amount to avoid a risk of premature chemical and thermal wear on the cell.
: So, a higher level of cell imbalance will lead to the battery pack having a cell reach a lower voltage limit sooner than one with relatively balanced cells.
: Symptomatically, this means that the bike will experience a torque reduction at a higher [[SoC]] if cell balance is poor.
See the [[BMS/Cell Balancing|Cell Balancing]] function of the [[BMS]].
[[Category:Term]]
;Notes
: ''Cell imbalance'' means a high difference in voltages, and is the inverse of ''cell balance''. ''Cell balancing'' reduces cell imbalance.
: A cell at a lower voltage will operate worse than one at a higher voltage, and an EV must operate with all its cells above a certain amount to avoid a risk of premature chemical and thermal wear on the cell.
: So, a higher level of cell imbalance will lead to the battery pack having a cell reach a lower voltage limit sooner than one with relatively balanced cells.
: Symptomatically, this means that the bike will experience a torque reduction at a higher [[SoC]] if cell balance is poor.
See the [[BMS/Cell Balancing|Cell Balancing]] function of the [[BMS]].
[[Category:Term]]