(CNNMoney) — If there’s one dumb device in your home worth making smart, it’s your smoke detector. It chirps when your battery is low (inevitably at 3 a.m.), it goes off when you’re making stir-fry, ...

Your remote control needs them. So do toys, flashlights, wall clocks, milk frothers—even many smoke alarms. Batteries keep the juice flowing. And while our gadgets ...

Sure you could go buy a USB charger off the shelf, but what fun would that be? Try making one yourself with a little help from a 9V battery and a few extra components. This simple hack on a standard ...

In this article, I will take apart a Li-ion alternative to the classic 6F22 9V battery. This battery is a Chinese 9V/500mAh USB rechargeable Li-ion battery (sold under the brand name infinite). The ...

If you’ve ever gotten into electronics hacking, you’ve probably had the illusion of most gadgets ruined for you. For example, 9V batteries are basically just six AAAA batteries taped together. As ...

We’ve all felt the pain of sitting down to play a game and getting that dreaded “low battery” warning for our Xbox One controller. Batteries are an unfortunate fact of life. Luckily, there’s a way to ...