Many states (such as California) and municipalities (such as Phoenix) require smoke alarms with 10-year batteries. For these areas, we recommend the First Alert SM210 10-Year Sealed Battery Smoke ...

Types of smoke detectors Battery-powered units: These are entirely powered by their batteries, which can be either replaceable or permanent lithium batteries sealed inside. Hardwired units ...

Related: How to Clean Battery Corrosion Inside a Battery Case We've all been there—you're using the oven or broiler, and suddenly the smoke alarm goes off. It can be tempting to remove the ...

Many battery-operated alarms offer 10-year batteries like this Kidde 10-Year Worry-Free Sealed Battery Smoke Detector with wireless voice interconnect. “Hardwired alarms are connected to a power ...

In a standard smoke alarm, the battery will need to be replaced every ... “Some alarms can be purchased that are fitted with sealed batteries that last up to 10 years. These alarms will need ...