Battery indicator in days – very inaccurate. What to do?

Hello everyone, I have a question about the battery display in days.

The battery life estimate in days is incorrect for me.

When the battery is fully charged, 4 days are displayed for AOD, but the watch lasts 6 days + 10% remaining capacity.

Regardless of whether the battery has 45% or 18% remaining capacity, it is rounded down to 1 day and displayed.

Why is the display so inaccurate? Is there any way to improve this?