I have set the charging limit to 90%,but it always charges upto 100 this problem have started recently before it always charged upto 90%
Custom Charging Mode - Help
I am also facing the same Problem
Please resolve it
DebansuPanigrahi Hello folks, please make sure to log this as product feedback/bug via settings > system > feedback 
DebansuPanigrahi are you shutting down the phone while keeping it to charge you need the device to stay awake for it to work
On top of what Pixcel has said, make sure when you plug in the device to charge, the “Charging Assistant” notification is present. It shall say “Charging to 90%” as part of this.
If you don’t see the notification, assume it shall be charging to 100%. So it might be worth double checking your battery settings:
Settings > Battery > Battery health > Custom Charging Mode (is switched on). Then:
Settings > Battery > Charging Assistant > Display charging notification (is switched on).
If you face any further issues, please do submit your feedback, as suggested by Harry.
All the best with your fault finding 
DebansuPanigrahi Can anyone seriously tell me how this feature is useful? Like why not just charge to 100% ? Please I am not kidding I don’t know if it’s useful in some way, please explain
Spandan I believe it is to save Battery Health. You would more like it to use 80% Battery each day for no Battery Health loss, and charge to 100% on days you need to, rather to charge 100% everyday and have your battery worse than 80% of original capacity.
This is not a great explanation, but I hope you understood.
Derren changed the title to Battery charging to 100% after setting charging limit .
hrry changed the title to Custom Charging Mode - Help .