When and how to replace your AirTag batteries

To replace an AirTag battery, you'll need a new CR2032 3-volt lithium battery, and it helps to have a pair of rubber gloves.

How wrapping keys in aluminum foil protects your car from thieves

Thieves are increasingly using radio amplifiers to break into cars with passive keyless entry. Here's what you can do to ...

Tesla watchers alarmed as automaker seems poised to remove key vehicle feature: 'Might as well just delete the car while they are at it'

While Tesla's phone-as-a-key app is generally reliable, removing key cards could be inconvenient, especially since not ...

The Right Time To Change Your Smoke Alarm Batteries—And Why It Matters

Small flashing red lights and chirping sounds every 30 to 60 seconds can mean it’s time to change a smoke alarm’s battery. Some models may have a green flashing light or announce “low battery,” so ...

9 Secret Key-Fob Features That Will Make Your Life So Much Easier

That little remote packs a whole lot of power. Here's what you never knew about that humble key fob dangling from your ...