Taking a look inside one of my power tools - a NiCd (NiCad) cordless screwdriver from 1997. It still works well after 20 years. The schematic is surprisingly simple. It's amazing how simple those NiCd tools are compared to the Li-Ion ones and how long they can last.<br /><br />You can support me on Patreon:<br /><a href="https://www.patreon.com/DiodeGoneWild" target="_blank" rel="nofollow">https://www.patreon.com/DiodeGoneWild</a><br />...<br /><a href="https://www.youtube.com/watch?v=h-5RBb9FFLk" target="_blank" rel="nofollow">https://www.youtube.com/watch?v=h-5RBb9FFLk</a>