Brick returned to life?

Had a weird experience.

Phone died Wednesday night. Wouldn't turn on or anything. Pretty sure I had a near full charge, but put it on charger for a while anyways. Nothing. Tried turning it on a couple times yesterday, still nothing.

This morning I was getting ready to clear it off my desk and behold, the red "no battery charge" notification light. More sign of life than it'd given in the last 36 hours! Plug it in, and it boots. Seems fine now, the only difference seems to be the time resetting to December 31, 1969 (0 in epoch time).

Has anyone heard of something similar? I think this is a refurbished phone because I got it in April from Google after 2 previous phones died of the boot loop. I don't want to reactivate it now because I'm afraid it will do the same thing in like a week.