That’s because he prototyped a way to use power tool batteries as an emergency source — basing his circuit on a 7812 linear regulator which got piping hot in no time flat. His next ...

Cordless power tool battery replacements are expensive: you can easily spend $100 for a NiCd pack. [henal] decided to skip nickle-based cells and cut out the middleman by converting his old ...

If you're looking for a cordless drill, Consumer Reports may help you decide which one of these ranked tools is best.

By Paul Hope Over the last 20 years, lithium-ion batteries have revolutionized indoor and outdoor tools. Cordless drills ...