Today I am going to show you, how can we make car charger for only Rs 80/- (approx $1.5). To make this you have to buy some electronics

•  12-0-12  500 mA Transformer (T1)

• IN4007 Diode (D1, D2)

• 1000 mF Capacitor (C1)

• Wires

The circut diagram is given below . . . . .

You can use 12-0-12  2A transformer if you only want to charge car battery. You can use transformer given above for most of the 12 V battery s including bike battery.