Datasheet

Now open up the Serial Console and make sure the baud rate is set correctly at 57600 baud you should see the

following:

Whenever the RTC chip loses all power (including the backup battery) it will reset to an earlier date and report the time

as 0:0:0 or similar. Whenever you set the time, this will kickstart the clock ticking.

So, basically, the upshot here is that you should never ever remove the battery once you've set the time. You shouldn't

have to and the battery holder is very snug so unless the board is crushed, the battery won't 'fall out'

Setting the time

With the same sketch loaded, uncomment the line that starts with RTC.adjust like so: