DIY Circuit Car Battery Charger

Posted on Feb 7, 2014

This very simple circuit uses a transformer, two diodes, a capacitor and an ammeter. To charge a battery just connect the + and terminals of the circuit to the corresponding terminals of the battery. When the battery is not charged, the ammeter reading shows 1-3 amps. When the battery is fully charged the ammeter reads Zero or nearly zero, af

DIY Circuit Car Battery Charger
Click here to download the full size of the above Circuit.

ter which the battery should be removed from the charger.

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