https://wccftech.com/playstation-5-cmos-battery/

A few days ago, we reported that a PlayStation 4 console with a missing CMOS battery is not able to play any physical or digital game without being connected to the internet. The situation seems to be slightly different on PlayStation 5, but it's definitely not good news for owners of the Digital Edition.

@DoesItPlay1 shared a few hours ago a new report that confirms the PlayStation 5 can only play select physical games with a missing CMOS battery without being connected to the internet. On the other hand, it seems like the console has no trouble running PlayStation 4 physical games.