When the power fails on a subzero night, your alarms are only as trustworthy as the batteries hiding behind their plastic covers. The chemistry you choose can decide whether a smoke detector screams ...

If you buy something from a Verge link, Vox Media may earn a commission. See our ethics statement. When you buy a product labeled “smart,” it should be better than the “dumb” version, especially ...

The RSA-400 looks like your ordinary, everyday smoke detector. The included Roost Smart Battery enables it to connect to your Wi-Fi network, and that’s how it sends alerts to your smartphone if the ...

Replacing smoke alarm batteries can be a hassle. It always seems that just as soon as you've installed fresh ones, the low-battery warning is beeping at you again. Many homeowners wonder why their ...

Update: The Roost Smart Battery is now available for sale. You can read my hands-on review here. I didn’t have the highest opinion of the Roost Smart Battery when I wrote about it last October. The ...