Editor's Note: March 16, 2026: We've added a section answering some frequently asked questions related to purchasing a UPS backup at the end of this story, which we hope will help you figure out how ...

Gear-obsessed editors choose every product we review. We may earn commission if you buy from a link. Why Trust Us? Back when I lived in North Carolina, along what weather experts call Hurricane Alley, ...

You know the signs: The lights flicker, your humidifier stops humming, and some piece of tech—there’s always one—makes a mournfully long beep from another room to let you know that it’s losing ...