Here’s the question, what batteries do smoke alarms use? 9V has been the battery of choice for smoke alarms for many years. The more common batteries in smoke detectors today are two or three AAs. About three times as much…
Here’s the question, what batteries do smoke alarms use? 9V has been the battery of choice for smoke alarms for many years. The more common batteries in smoke detectors today are two or three AAs. About three times as much…