E&EP AUTOS | How to make an auto cut off 12v battery charger | Updating simple battery charger to auto cut off. @ElectricalElectronicsProjects | Uploaded November 2017 | Updated October 2024, 4 minutes ago.
Hi Guys here is the new video: How to make an auto cut off 12v battery charger | Updating simple battery charger to auto cut off..from my "Electrical and electronics projects" "E&EP" Channel.

In this video i have converted a simple charger to an auto cut off 12v battery charger circuit.In this circuit i have used a D882 NPN transistor and 12v relay to move NC contact to NO when battery is fully charged in this way the current not flow through NC to overcharge a buzzer and a green LED indicates full charging mode.First of all we will have to adjust the voltage to battery's desire voltage in which the battery remains charged and then connect the battery to be fully charge. I have updated my old simple charger you can watch that video here: youtu.be/6phMIixQyTI and then follow this video.You can make it as you want in casing or simple on a piece of wood.The circuit diagram is in video at 3:50 you can see it it's easy and simple to make your own.

Components you need:
*D882 Transistor
*12v Relay
*22uf / 16v Capacitor
*5k Potentiometer
*Red/Green LED
*Buzzer / Optional
*10k,1k and 330 ohm Resistor.

* How to make 12 volt 5 Amp battery charger at home
youtu.be/6phMIixQyTI