Hey! everyone My name is Steve .

Today i'm going to show you How to Make 12v Battery Charge

With this charge you can charge any type of 12 v battery even your car battery

it is very necessary in cold days because battery drains out very quickly .

This Charger features 2 step Charging 1. Constant Current 2. Constant Voltage

it is very safe and stable for daily use "it's very standard "

Let's Start

Step 1: Stuff I Used

Dc to Dc Step Down Converter

it's will convert 19 volts from your charger to 14 volts to charge the battery
it'll provide constant voltage and constant current. ( 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"

Features

Step 2: Prepare the Adapter

Follow the Steps

Cut down the jack of the adapter
Remove the outer shield with a blade (Carefully)
you'll see 2 wire red and black , black is negative and red is positive (see the image)

You can see the label over the board

Now connect alligator clip

Now you need a multi-meter to set it up

Plug the power to the adapter
Connect the black alligator clip to negative lead of multi-meter and red alligator clip to positive lead
you can see 2 Potentiometer over the board (see the image)
first one is voltage and second one is current
Now select the DC voltage reading on your multi-meter and turn the Potentiometer with a screw driver until you get 14 volts reading on multi-meter
Now select the Current Reading on your multi-meter and turn the second Potentiometer with a screw driver until you get 2 amps reading on multi-meter (you can go up to 5 amps all it depend upon the battery capacity if you have a bigger battery "like a car battery you can go up to 5 amps "