12v Charging System Fault/Plug in to maintain 12v Battery

Hi there..recently received these two errors. Have had all of the update, recalls, and service updates installed (mostly buy the dealer since OTA updates for the recall and the service bulletins just don’t work for me). I keep the MME plugged in at al times, but recently kept it unplugged for a day or two (in the garage) in mild spring temps and received the prompt above to plug in (SOC not affected). A month or so earlier and from time to time since I’ve had the car I receive the occasional 12v charging system fault in the app, not in the car. I’m not sure why I would need to keep a 12v battery plugged in constantly to maintain charge, an ICE vehicle and even the MME can sit for weeks without the 12v running down that much, especially on relatively young battery (Dec ‘21).

So the updates mentioned above all installed by the dealer, it’s had its 10k check up so been TO the dealer (recently) and they didn’t notice anything (not surprising though), should I be concerned?