This is a circuit for the low cost universal charger circuit diagram for NiCD – NiMH batteries. This battery charger circuit is ideal for car use. It has ability to transform a mains adapter in to a charger . This one can be used to charge cellular phone, toys, portables, video batteries, MP3 players. An LED is located in circuit to indicate charging. This is the figure of the circuit;
Before building the circuit, you must determinate how much current will be used to charge the battery or battery pack. It is advisable to charge the battery with a current that is 10 times smaller then the battery capacity, and to charge it for about 15 hours. If you double the charge current, then you can charge the battery in half the time. Charge current selection chart is located in diagram.
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