How to make a 12v battery charger

13

Step 1: stuff I used

Viral News Boy :- DC to DC step down converter

Alligator clip

Multimeter

Laptop charger

DC to DC step down converter

It will convert 19volts from your charger to 14volts to charge the battery.

It will provide constant voltage and constant cuttent.(Very necessary).

It comes with 3 indicators led(red, blue, and green), red show constant current, blue show load and green show constant voltage “full charge”

Step 2: prepare the adapter

Cut down the jack of the adapter

Remove the outer shield with a blade ( carefully)

You will see 2 wire red and black, black is negative while red is positive (see the image).

Step 3: connection

The red wire of adapter will go to “IN+” positive of the board(see the image)

The black wire of adapter will go to “IN-” negative of the board.

Light the screw terminal with a screw driver

Now connect alligator clip

Red alligator clip will go to “OUT+” positive of the board(see the image)

Black alligator clip wire will go to “OUT-” negative of the board.

Step 4: configuration

Plug the power to the adapter

Connect the black alligator clip to negative lead of multimeter and red alligator clip to positive lead.

Test it and your good to go 👍