Periodically about once every 20-30 mins or so while recording, my Garmin Mini 3 beeps once and the red lights go off and solid green light comes on. Then about 5 seconds later it beeps twice and the red light comes back on. It seems to continue recording through this process (see attached video). I tried looking through the manual and googling around, but couldn't find anything. Is this expected behavior or is my Garmin trying to tell me it is having trouble? I just got the unit a few days ago and it has done it several times so far. I'm using a Samsung High Endurance card if that makes any difference.

Any help is appreciated.