What Batteries Do Smoke Detectors Use?

Three out of every five homes fire deaths result from fires in homes without smoke alarms or working smoke alarms. When it comes to your home and family's safety, it’s critical to always have functioning alarms and the proper batteries installed. The battery in your smoke alarm should be something that you can rely on. That’s why at First Alert, we recommend a 10-Year Sealed Battery Smoke Alarm.

9V vs. AAs Batteries

9V has been the battery of choice for smoke alarms for many years. However, nowadays, it is more common to see two or three AAs. AA batteries have about three times as much energy as a 9V. When using batteries like these, it’s important that you check them consistently and replace your smoke alarm batteries every 6 months. A good reminder is to change them every time you change your clock for daylights savings.

10-Year Sealed Battery Smoke Alarm10 Year Sealed Battery Smoke Alarm

In some areas of the country, it is required to have a 10-year sealed battery smoke alarm. Check out our legislation map for specific requirements for your state. Even if it is not mandated in your area, First Alert highly recommends them. The battery in 10-year alarms last for the life of the alarm, eliminating the need for battery replacements. These alarms also have an end of life warning to remind you to replace the alarm after 10 years.

Buy a 10-year Sealed Battery Smoke Alarm

Choose the option that allows you and your family the most peace of mind. At First Alert, we are committed to creating reliable products that help protect your home and family. Learn more about our 10-year sealed battery alarms.