Readers had a variety of suggestions for the best way to upgrade/replace/recycle the old NiCd battery pack from a still-usable Makita drill. I asked the folks at battery pack designer Nexergy to read ...

We may receive a commission on purchases made from links. Ryobi has been making battery-powered tools for a long time. The company has produced several generations of cordless products, with a marked ...

This automatic NiCd charger for 9V NiCd batteries is using 555 timer properties and is very easy to build. Why is an automatic 9 volts NiCd battery charger? Because you can leave the battery for ...

Care must be exercised when you try to “quickly” charge a nickel-cadmium (NiCd) cell or battery pack at a current density that approaches or exceeds one-third of its capacity (C/3). As the battery ...

This file type includes high resolution graphics and schematics. Rechargeable nickel-cadmium (NiCd) batteries are widely used in consumer electronics because of their high energy density, long life, ...