I always change mine twice a year, when time changes. Did you have an issue that you needed it? My husband also checks it frequently too. Why it would die at that time of the morning I have not a clue.
Sorry, but I'm laughing right now. I remember when my son was home one summer during his college break, and the doggone thing went off in the middle of the night. I couldn't get it to stop - and I couldn't get the cover off. Frustrating.
I have a theory that is just a little bit paranoid. I believe the engineer who designed them is bored and angry and included a small timer/sensor in modern batteries that cuts the power off at 3:30 am or at the most inconvenient time possible. I have no way of proving this so it is just my suspicion. It just sounds like something an engineer would do for fun, based on the ones I have met so far.
Do people know when they are going to die before they die?Recently a community leader died 'suddenly'. During the week since her death I have talked with individuals who was told by the deceased that she was 'dying' or...