[HammyDude] was tired of buying replacement batteries for his power tools. He had some Lithium Polymer batteries on hand and decided to take one of his dead drills and swap out the dead power pack.

Over time, you'll notice telltale signs a power tool battery requires replacement, which will only eat into your savings. You're better off attempting to extend the life of your batteries by ...

The electrical design, of course, is trivial. A computer fan, a switch, and a battery — in this case, a Makita power tool battery. But the Fusion 360 design for the 3D printed parts got a lot of ...

The brand's 18V system uses high-performance lithium batteries that can power tools both small and large, and which are interchangeable, so you can use any Ryobi 18V battery with one of its 18V tools.