Why oh why do these smoke alarm batteries start to die and provoke the warning chirping in the middle-of-the-night? It could be 7:00 PM, but nooooooo, it is always during the middle of a restful sleep. And then you have to go get a ladder. And then the Mrs. is awake and not too happy either. And so, here I am, trying to calm back down in the Bad Dog at 2:50 AM. Maybe always putting fresh batteries in at 9:00PM would change the cycle.