SLUSFF9 November 2023 BQ27Z558
PRODUCTION DATA
The calibration of current, voltage, and temperature readings is accessible by writing 0xF081 or 0xF082 to ManufacturerAccess(). A detailed procedure is included in the BQ27Z558 Technical Reference Manual in the Calibration section. The description allows for calibration of cell voltage measurement offset, battery voltage, current calibration, coulomb counter offset, PCB offset, CC gain and capacity gain, and temperature measurement for both internal and external sensors.