Apple Watch Battery Drain Fix. In the my watch tab, tap all watches at the very top of the screen. Open the watch app on your iphone.

Deleting the update file from watch storage stops. It’s new watchos 10.1.1 update provides important bug fixes and addresses an issue that.
Tap On The “I” Icon On The Right Side.
An update to watchos 10 has been released with bug fixes, which address the excessive battery.
Turn Off Background App Refresh.
Therefore, your watch might be draining.
I Used To End The Day At 10Pm With 50% Left.
Images References :
You Can Fix The Battery Drain Issue On Your Apple Watch With A Force Restart.
The apple watch battery continues to drain abnormally fast after the first (vanilla minimal) configuration.
Luckily It Looks Like Apple Is Aware And Tackling The Problem.
Select unpair apple watch and confirm your action.
Also Include Managed Device Support For Apple.