Simple battery charger circuit.

Description .
Here is the circuit diagram of a simple and straight forward battery charger that can be used to charge all type of 12V rechargeable batteries including car batteries. The circuit is nothing but a 12V DC power supply with an ammeter for monitoring the charging current.The two diodes forms a centre tapped full wave rectifier .The capacitor filters the rectifier output to produce a clean 12V  out put.
Circuit diagram with Parts list. 

Notes. 

• At initial stages of charging the ammeter will read about 1 to 3 amperes.
• As the battery is slowly charged the current slowly decreases.
• When the battery is fully charged the ammeter reading will be zero.
• Always be careful to connect the charger to the battery in correct polarity. Positive to positive and negative to negative.