Thank you and yeah, I love solar...that's why I love installation as well.

And to give attention to the few questions you have raised....

How many watt panels can be used for 1.1 KVA solar inverter?

If I mention a specific wattage..., I'll be wrong. I would rather say...it depends on the wattage of the panels you intend to use considering the maximum input of the inverter.

Do the calculations...

So, to charge this 220Ah battery..., atleast a minimum of 4 panels (200W) would do this job perfectly. I am using 200W Canadian panels.

How long will it take to fully charge your 220 AH battery with this solar panel?

This depends on the "peak sun hours".

You get 36.1 voltage from the panel but what is the standard voltage of the panels?

Remember, the 36.1V I mentioned was the "VOC... not rhe standard voltage of the panel.

However, the standard voltage of the panel I used was 24V. So in a nutshell, what I used was 200W by 24V Canadian panels.

Is that product popular in your country?

Sir, I asked you the questions to increase my own knowledge. If you make a mistake in asking a question, you will look at it with a look of forgiveness. Good luck to you.

Here is to teach and to learn...and there is no offense in some educational questions like the ones you asked. So it's fine.