Portal: External Battery?

Is the Portal set up for connecting an external rechargeable battery and crystal (if it needs it?). Can’t see where vbat is exposed on the board, there seems to be a super cap on the board but don’t know how long it will keep the rtc going on power failure…

RTC has everything it needs to run. I think the cap is good to keep it going for days. I can’t remember how long.

Thanks Gus, I’ll have to try to figure out why the RTC is coming up invalid sometimes.

Did you enable the charging feature?

I figured that was the issue - do you use slow or fast charging for the portal supercap? The devboard uses the fast charge I see…

Either works