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 ...

In a power outage, a 9 volt battery can give your phone enough juice to make a call or send a few texts. You may have seen this hack before, but it works especially well in this variation where you ...

Here is a simple battery charger for the Nickel Metal Hydride battery that requires current regulated charging. The charger provides 140 mA current for quick charging of the battery. Power supply ...

While it’s the easiest way to lay out a simple circuit for prototyping, breadboards are a pain. They are the ultimate kludge; they work well enough, but no one will ever say that a solderless ...

Posts from this topic will be added to your daily email digest and your homepage feed. The best charger when you’re trapped in a gas station during the apocalypse The best charger when you’re trapped ...