Smoke Alarm issue

Woke up to chirping last night. Short version is tried changing the battery and still chirping. Disconnected smoke alarm from power connection. Still chirping. Disconnected and removed all alarms in house and placed them in my car outside. Tested all circuits and no power to any of them. Also there is chirping still happening. Where is it coming from and why would the power circuit to all be out? Checked the main panel and no breakers are tripped.
AM I CRAZY???????????