AC to DC Charger Fan Repair. || Problem: Battery output capacity has decreased. || With video tutorial.

How are you all? I hope everyone is well and healthy by the grace of God. Today I will share with you how to replace the battery of an AC to DC charger fan and understand its problem and repair it.

Edited with Canva.

A few days ago, an elder brother of my factory gave me an AC to DC charger fan for repair. Then I brought the fan home and charged it and tried to find out the problem, but when I gave the fan 220-volt input voltage, I saw that the fan was still running, and when I was running it through the battery, I saw that the fan was still running. I fell into a confusion. The fan is working in both directions, so which direction is the problem? I called the owner of the fan and asked what the problem is with your fan. Are you telling the truth?

Then he told me that it runs through current and not through the battery. Then I told him that your fan is running through the battery. Then he told me that I should take a good look at the fan; it does not run for long, or when it was in my house, it did not run even for two minutes through the battery. Then I tried to run the fan for a while by charging it for two hours, and then I saw that the fan stopped working for a maximum of 10 minutes, and then I realised that the problem was with its battery. Then I went to the market, bought a battery of the same quality and replaced it in the fan and checked it, and it lasted a long time, so let's see how I did this step by step.

Step -01

First, I took the fan to my work table and gave it 220 volts input voltage. You can see that the charging light is on here. Since this fan has been lying for a long time, I have to charge it for a while and test it to see what the problem is.

Step -02

After charging it for two hours, in the morning, when I was running the fan through the battery, I saw that the fan was running for a maximum of 10 minutes. Then I felt a noise inside me, whether it was a problem with the circuit or a problem with the battery. To understand this, I opened the fan and separated the covers. You can see here the controlling circuit and power supply are visible, so now I will check carefully whether it is a problem with the circuit or a problem with the battery.

Step -03

Then I removed the battery from the battery cover, and I suspect the battery is 100%, as I do not see any problem in the circuit, so I will charge this battery with another charger and check its longevity.

Step -04

Now you can see that I have given 220 volts input voltage to the fan, and my power supply controlling circuit is working properly, and I have checked the battery charging output line with a digital multimeter. You can see that there is a DC output coming out here to charge the 12-volt battery, which has a point of 13.60, which is a perfect hold for charging the battery, so I assume my circuit is correct.

Step -05

Meanwhile, you can see that I have checked the old battery with a digital multimeter, and it is also giving a rating of 12 volts, but its capacity performance has reduced because it cannot run for more than 10 minutes after a two-hour charge, so we decided to change the battery.

Step -06

Then I went to the market; there are many batteries available from Chinese companies, so I bought a 12-volt, 5.5-ampere battery from the DJDC company for 1200 taka and replaced it inside the fan, and I will run it and see its performance.

Step -07

You can see that my 220-volt AC input voltage line is open and power has come inside my fan through the battery, and you can see that 4 lights are showing on the battery charging green light. This means that the battery is fully charged.

Step -08

I ran the fan through the battery for an hour, and there was no shutdown, and my doubts were cleared, and I considered it perfect. The problem with the battery is that I will explain it to its owner now and give the old battery and tell him that your battery has a problem, so I changed the battery, and I will take 200 taka as a deposit, and I bought the battery for 1200 taka. I have to take 1500 taka from him, including the total car rental. I have now charged the fan, and after a while I will give it to its owner, and I have taken a picture with my artwork.

Video Tutorial: To better understand the practical part of this tutorial, you can watch the video below.

✅ CC: My friend @rmm31

✅ We support @pennsif and @pennsif.witness for the growth of this platform. pennsif.witness his contribution to the Steemit community. Vote for him as a Witness here: Click to Vote

🟩 Thank you for reading my post and giving your valuable time. Stay well and stay healthy. God bless you. 🟩

Photography Details	📱 Device: Walton Xanon90	📍 Location: Narayanganj, Bangladesh	📷 Captured By: @imranhassan