Does the DS3231 RTC module hold it's time date when replacing the battery?
If it has external power at the time then I am sure that it does. If it is not powered at the time then it is unlikely I would have thought
Thank you UKHeliBob.
That depends on the circuit and how it is powered. If powered no problem. If there is a Keep Alive capacitor in the circuit it will keep a while when the battery is changed assuming it is not totally discharged.
Thank you Gilshultz