With longer power outages, the backup battery in the IQ4 isn’t lasting long enough. Are there any solutions to get the panel to last on batteries for longer.
The main option you have on board the panel is the Power Management setting, which runs the panel on an energy saving mode while on battery power.
It looks like your setting is disabled. You can turn that on in Settings > Advanced Settings > Installer Code > Installer Settings
Extending it longer than about 24 hours would require external power, a generator/UPS.