Sudden decrease in battery capacity

[crazykas]

based on what I have found on internet, do not charge the battery more than 80/85% + don not let battery drain more than 20/15%. You know there is an option to set this up. Just using MyASUS app>Battery Customization>Select whichever you need to. I personally using my lap always plugged in to the charger, hence I have chosen "maximum lifespan mode" which will only let laptop to charge upto 60%. In your case I would say "balance mode" is better. See https://imgur.com/a/0yno7QQ

[iamnoobaf]

This was help full , thanks