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 ...

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 ...

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

One of the most essential tools for pros, DIYers, and homeowners is a cordless drill. You can save nearly half off the usual ...