The design of the charger is similar to that of many commercially available chargers. The charger consists of a mains adaptor, two resistors and a light-emitting diode (LED). In practical use, this ...

Nickel Cadmium (NiCd) batteries are widely used in consumer electronics due to their high energy density and long life. Constant current charging is often recommended by manufacturers. Several ...

It's a good idea to have a quality car battery charger on hand in case of an emergency. However, they all aren't created equal. Here's what you need to know.