SLUUBD4A April 2016 – November 2022 BQ27220
The BQ27220 device estimates the self-discharge of the battery to maintain an accurate measure of the battery capacity during periods of inactivity. The BQ27220 device makes self-discharge adjustments to RM every 1/4 second when awake and periodically when in SLEEP mode. The period is determined by Sleep Time.
The nominal self-discharge rate, %PERDAY (% per day), is programmed in an 8-bit value Self-Discharge Rate by the following relation:
Self-Discharge Rate = %PERDAY/0.0025