SLUUCP8A June 2024 – April 2025 BQ41Z50
STORAGE mode is activated with command 0x000A. When the STORAGE mode command is received, bit 10 (the [STORAGEM] bit) in Operation Status B is set.
The gauge needs to be in SLEEP to stay in STORAGE mode, so the Storage Delay time and Storage Ignore SMB Delay time, though not limited, should practically be set higher than the Chg Relax Time and Dsg Relax Time thresholds.
Storage Ignore SMB Delay time can be set smaller than Storage Delay time in test setup with communication disconnected after sending the command, but in practical setup, Storage Ignore SMB Delay time might need to be larger to let the disabled FETs turn off communication, so that there would not be any SMBus high to cause the exit from STORAGE mode.