The Pi 5 / CM5 / Pi 500 series does have a built-in RTC now, though most models ...

geerlingguy 10 months ago | parent | context | favorite | on: I regret building this $3000 Pi AI cluster

The Pi 5 / CM5 / Pi 500 series does have a built-in RTC now, though most models require you to buy a separate RTC battery to plug into the RTC battery jack.