Battery Drain Issue (MI 12, Redmi Note 8)

[ggwpd]

Hello, please help me understand why my battery is draining so quickly: it discharges 70% in just 2 hours. I'm using dark mode and have disabled auto-brightness.
Redmi Note 8
MIUI 12.5.2.0
Android 11 RKQ1

 

[JiaiJ]

My guess would be that your battery is just tired.

 

[ggwpd]

My guess would be that your battery is just tired.

Thank you for your reply. What would be the best course of action to take in this case?

 

[JiaiJ]

Check YouTube to see if replacing the battery is difficult for you. Then can do it yourself (the cheapest option), or go to a repair centre, keeping in mind the total cost compared to buying a newer phone.