SLUUCH2 March 2021 BQ40Z50-R2
Resistance updates take place only in DISCHARGE mode, while open circuit voltage (OCV) and QMax updates only take place in RELAX mode. If Fast Qmax is enabled, the Qmax also updates at the end of discharge given a minimum of 37% delta change of charge. Entry and exit of each mode is controlled by data flash parameters in the subclass Gas Gauging: Current Thresholds section. When the device is determined to be in RELAX mode and OCV is taken, the GaugingStatus()[REST] flag is set. In RELAX or DISCHARGE mode, the DSG flag in BatteryStatus() is set.
TBD: Need to label Chg and Dsg Current Thresholds on the figure (the dashed lines above "Quit Current" and "(-) Quit Current??