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 circuit may be used to replace the single current limiting resistor often found in dirt cheap battery chargers This circuit may be used to replace the single current limiting resistor often found ...

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, ...