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Battery auto drain

Star I

I just bought Asus Vivobook S15 OLED laptop recently. I noticed that my battery is auto draining while in shut down state. I charged the laptop to 79% and then i shut down it but when i opened it next day the battery was 67%😢. Why is that, please help



May I inquire whether your BIOS and system versions have been updated to the latest versions?
If you've used MyASUS to check the battery, have any errors appeared?
[Notebook] MyASUS - System Diagnosis
Thank you.

My BIOS and Windows are Updated to latest Version. I have also checked battery on MyASUS app, there's no issue shown there.

According to what you described, I would recommend sending your laptop for repair to confirm whether there is an abnormal electrical leakage from components on the motherboard. 
The following is the contact information: 

Also you can contact the local service center for help.
The following is the contact information: 

Sorry for any inconvenience it may be caused.