I have never had to search so long and hard to find simple instructions on changing a battery. Even your 4-pt font user manual doesn't make it clear. And you should not make me dig through an imbedded manual to find it anyway. Make it a quick link from home page, for heavens sake. My alarm went off, and there is no fire or CO. I need to change the battery so I can go to sleep. But I guess I'll just take my chances and hope it doesn't go off again. Good grief.