HOW TO MAKE AUTO BATTERY CUT-OFF CHARGER

Hi, this is Jatin creator of the jtech youtube channel linkwww.youtube.com/jtech9

Project details - This charger prevents our battery from getting overcharged. When the battery is full, it automatically cuts off the power.

All details are given here you can make your charger by following these steps.

First of all, we have to design our printed circuit board you can use any PCB design software. and if you don't want to design you can simply use my PCB Garber file for free. Download the Garber file from here

Order PCB I am using jlcpcb for PCB manufacturing jlcpcb is one of the most popular PCB manufacturers in the world they provide good quality PCB for just a few dollars if you are working on any PCB related project you can try out https://jlcpcb.com/ they are happier to be a part of this project.

I received my PCB in a few days and the packaging quality is superb so there is no risk of damage during shipment.

here are the component details you can buy from the local market or any online store.

Here is the components list 

1.  Resistor 1k
2.  5mm led
3.  16v 1000uf capacitor 
4. 1n4007 diode
5. Screw terminal 
6. Dc jack
7. 5v relay
8. Pot 103 
9. Bc547
10. Voltage display 

Here we will install all the components inside the PCB.

Our PCB is now ready.

Here we are making a box using MDF board any other material work well like PVC sheet, plastic sheet, or cardboard. and you can select the dimension according to your box size, and design.

Finally, our MDF board is ready. Now I am marking on the box so we can make a hole to install the dc jack.

Now we are ready to install the rest of the components in the box here I am fitting 2 dc jacks for input and output. 

Our 80% work is done now we have completed all the rest connections and then we are on the charger for the first time and then we will calibrate and set it for a 12v battery.

All connection is made now we are fitting our PCB into the MDF board use glue gun here or double side tape in case of components are replaced.

Now we are calibrating our charger using a screw driver we will rotate the pot resistor.

Our charger is and we are testing it now. I am using a 12v battery here this battery voltage is low I connected a 12v adapter in the input of our battery charger and connected the battery on the output side.

Our battery starts charging it will take more than 2 hours after reaching voltage 12v charger auto cut the battery power supply and save our battery from getting over charge. 

CHECKOUT VIDEO HERE FOLLOW OUR BLOG PAGE FOR MORE