What Batteries Do Smoke Detectors Use

When it comes to your home and family's safety, it’s critical to have functioning smoke alarms and the proper batteries installed. The battery in your smoke detector should be something that you can rely on. That’s why at First Alert, we recommend upgrading to a 10-Year Sealed Battery Smoke Alarm.

9V vs. AA Batteries

9V has been the battery of choice for smoke alarms for many years. However, nowadays, a more common smoke detector battery is two or three AA’s. AA batteries have about three times as much energy as a 9V. When using batteries like these in your fire detectors, it’s important that you check the detectors consistently and replace your smoke alarm batteries every 6 months.

10-Year Sealed Battery Smoke Alarm

In some provinces, it is required to have 10-year sealed battery smoke detectors. Check out our legislation map for specific requirements in your province. Even if these alarms are not mandated in your area, First Alert highly recommends them. The battery in 10-year sealed battery alarms lasts for the life of the detector, eliminating the need for battery replacements. These fire 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.