Learn how to make a simple lemon battery and use it as an emergency phone charger in this hands-on science experiment. Watch ...

If you own more than a two performance cars, then having a portable battery pack is a quick and easy resource when a battery goes flat. We looked into several portable battery packs that offer ...

SAN FRANCISCO -- During an emergency, it's important to keep your cellphone handy and charged. In the event the power goes out, it's going to be even more difficult to find a place to plug back in and ...

Wallet. Cell phone. Car keys. That’s the mental checklist many of us go through before we leave the house. But don’t you hate it when you approach your car, click the unlock button and nothing happens ...

When your remote control stops working or your child's favorite toy no longer functions, you might wonder if the batteries are dead or the device is broken. Fortunately, there's a simple and effective ...

Apple AirTags are nifty little devices that help you track or find items like luggage, keys, backpacks and more. The small, circular devices use Bluetooth and work with iPhones on the Find My network.

[Editor’s note: The hacker requested that we remove the image for legal reasons, so it’s blurry now. We hope all’s well!] Lithium technology has ushered in a new era of batteries with exceptionally ...

Gear-obsessed editors choose every product we review. We may earn commission if you buy from a link. Why Trust Us? Winter is coming … and so too could be a dead car battery. Colder weather can quickly ...

You may know the signs of a key fob with a bad battery: having to press the button multiple times or getting close to the car for activation to kick in. Sometimes the functions engage, and at other ...

Learn how to make a simple electric doorbell at home in this step-by-step tutorial. Using everyday materials like cardboard, ...

Scientists at the SLAC-Stanford Battery Center have discovered a way to significantly increase the durability and lifespan of rechargeable batteries. In their research paper, which was published in ...