SLUUBT5C November 2018 – June 2021 BQ40Z80
The following is the charging voltage degradation process (using Cycle Count as an example, although it would be the same for SOH):
In NORMAL mode, no ChargingVoltage() adjustment, moving to Cycle Count Mode 1, ChargingVoltage() is reduced by CV Degradation Mode 1 (assuming the Cycle Count 1 entry conditions are met), then moving to Cycle Count Mode 2, ChargingVoltage() is further reduced by CV Degradation Mode 2 (assuming Cycle Count 2 entry conditions are met). It is similar for Cycle Count Mode 3. The charging voltage mode transition is a one-way transition. The gauge only goes from Normal → Lvl1 → Lvl2 → Lvl3. The three degradation points each occur one time when that level is reached with the amount of voltage degradation based on the related register.
This charging voltage degradation scheme (if enabled) will need to work in conjunction with any other existing degradation/increments (such as charging loss compensation).