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 ...

When we saw [Max.K]’s automatic NiMh battery charger float past in the Hackaday tips line, it brought to mind a charger that might be automatic in the sense that any modern microcontroller based ...

People think about NiMH cell chargers probably as much as they think about batteries, unless it’s time to replace the cells in whatever device they’re installed in. This doesn’t make a teardown of one ...

Nickel cadmium (NiCd) finds use where long life, high discharge rate and economical price are important. Nickel-metal hydride (NiMH) has a higher energy density than NiCd, but at the expense of ...

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 ...