Introduction: How to Make 6V Lead Acid Battery Charger

About: Share diy projects to those who have the same hobby with me

Hii friend,

Today I am going to make a circuit of 6V Lead acid battery charger without using transformer.

Let's get started,

Step 1: Take All Components As Shown Below

Components required -

(1.) Polyester capacitor - 105J 250V x1

(2.) pn-junction diode - 1N4007 x4

(3.) Resistor - 390K x1

(4.) Resistor - 1K x1

(5.) LED - 3V x1

(6.) Lead acid battery - 6V x1

(7.) Connecting wires

Step 2: Connect All Components

Solder all components according to the circuit diagram.

Step 3: Solder 390K Resistor

Firstly we have to solder 390K resistor to both pin of polyester capacitor as solder in the picture.

Step 4: Make a Bridge Rectifier

Next make a bridge rectifier like as picture.

Step 5: Connect Rectifier to Capacitor

Next Solder Bridge rectifier to the capacitor as you can see in the picture.

Solder rectifier according to circuit diagram.

Step 6: Solder 1K Resistor

Next we have to solder 1K resistor as solder in the picture.

Step 7: Connect 3V LED

Now we have to solder an LED.

Connect -ve pin of LED to 1K resistor as shown in picture.

Step 8: Solder Input Power Supply Wire

Now solder Input power supply wire.

We can give 240V AC (50/60 Hz) Input power supply to the circuit.

Connect Phase wire to capacitor and neutral wire to rectifier as solder in the picture/shown in the diagram.

Step 9: Connect Battery

Now connect battery to the circuit as connected in the picture/circuit diagram.

Step 10: Solder +ve of LED

Next solder +ve of LED to the +ve of Battery.


Give power supply and left it upto 2-3 hours for charging and use this lead acid battery.

NOTE : For constant output DC Power supply connect an Electrolytic capacitor to the Polarity of Battery.We can use capacitor 50V 100uf , 25V 1000uf.

PRECAUTION : This circuit is very dangerous so be careful during the experiment and Don't try to touch circuit when power supply is on.

Thank you