Building a portable lamp with a 9V battery and LED bulb is a simple, creative DIY project that anyone can try. This video provides clear, step-by-step instructions for assembling a functional lamp ...

The battery-powered USB charger isn't an altogether new idea. We'd be remiss not to point out previously mentioned Minty Boost, the classic Altoids-tin-gum-battery-powered charger.

Volta’s pile — the first battery — was little more than silver and zinc discs separated by paper soaked in salt water. A classic classroom experiment is to build a pile from coppe… ...

Old American radios (and we mean really old ones) took several kinds of batteries. The A battery powered the filaments (generally 1.5V at a high current draw). The B battery powered the plate (much… ...

Sean Michael Ragan at Make wanted an easy way to turn off his own projects without having to disconnect the whole battery. He couldn’t find a 9V power switch to buy, so he made one himself. To ...

MIAMI (WSVN) - Strong storms, like Hurricane Irma, can cause power loss potentially for days. Luckily, there is a “hurricane hack” that shows a way to charge your smartphone via a 9-volt battery.