Do All Smoke Alarms Use 9v Batteries. But nearly all smoke detectors including those that run on household current do contain a battery. Replacement 9-Volt battery for Kidde smokeco alarms.

Up to 20 cash back Do I need to use just Kidde 9 volt battery for smoke alarms No. If you take the battery out of one of these units and your power goes out the alarm. Answer 1 of 4.
So if this is the first time youve replaced yours do open the battery compartments on your units and check before heading.
Ad Piper Fire carries the leading fire alarm systems along with their available accessories. These used the ionizing method of smoke detection. However nowadays it is more common to see two or three AAs in smoke detectors. Early 1970s single-station ionization smoke detectors used expensive batteries.

