Worse, municipalities are starting to pass stricter code, requiring the battery to be unremovable: http://rules.cityofnewyork.us/tags/smoke-alarm http://rules.

Worse, municipalities are starting to pass stricter code, requiring the battery to be unremovable: http://rules.cityofnewyork.us/tags/smoke-alarm http://rules.cityofnewyork.us/tags/smoke-alarm