Very Very Good for your marking of 12V Battery Charger. Any Negative comment pl ignore it !! After all you are making a real video and explain it Very clear with the help of zooming , Waiting for next videos from you !! A smallest request that if you can make a Emergency light auto power cut and battery charging at the same time with the help of 220 AC direct voltages. OR how to make 12V DC Adaptor. There are some video in RU-vid but many making short cut or fake. (Those who are making real pl pardon me, 🙏🏾 ) I cudon't recognize weather it's a real or fake. So, you do what you can do. Thanks !!