Sure, you could change the batteries in your smoke alarms or, hear me out, you could wait until they all start chirping one night at 3am.
@chaos440 Cute story, my grandma was an animal lover (like I am) and one day she was concerned that her cat had caught a bird and it was injured inside her house somewhere. She was moving furniture and looking everywhere for a couple of days. She was almost in tears thinking that it's little "cheeps" were getting fainter - my dad came over and told her it was her smoke alarm battery lol.