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Ultra Fast Battery Chager for Nickel-Cadmium battery cells [NiCad] which will be discussed in this article is Fast NiCad Battery Charger, called the Ultra Fast Charger Battery Charger NiCad because it can make filling fast NiCad Batteries Cell. A battery charger in Desai has a fast charging capabilities such as Ultra Fast Battery Chager for Nickel-Cadmium battery cells [NiCad] on this article shall be equipped with some ability to protect the battery and charger circuit itself. Feature owned by Ultra Fast Battery Chager for Nickel-Cadmium battery cells [NiCad]  Autoshut-off, is the ability of the charger to stop charging current to a NiCad battery if the capacity NiCad battery is fully charged. Polarity Protection, with the existence of this capability so if there are mounting the battery on the charger upside yan can be known. Constant output voltage Output currents enough to fill some NiCad batteries at once in parallel. Short Circuit Protection, with the existence of this protec...

The project utilizes MAX712/MAX713 fast charge controllers in order to build a smart & fast NiCd/NiMH battery charger.   The MAX712 is designed for NiMH batteries and the MAX713 is for NiCd batteries where the battery-fully-charged sensing method is the only difference between them. The values for some of the components included in the circuit can be chosen using the reference from Maxim. Depending on the number of cells of the battery pack intended to charge as well as the charging time, those values may vary. The charger won’t be able to charge packs with more than six 1.2V cells if it is powered only with 12V. the MAX will get hot and the charging current won’t be what is expected from the value of the sensing resistor if something bigger than 12V would be tried. This is due to the sinking of as much current as possible from the base of the power transistor as it tries to obtained up to 250mV voltage drop on the sensing resistor. The timer feature of MAX712/713 cannot be di...