again the Battery drain in this Firmware is very high, as i have done this note by Former Member nothing changed:

Note: We understand that there are users who have reported decreased battery life since the 3.90 update. There is nothing in 4.00 that addresses this and we would first ask that anyone seeing this symptom perform a hard reset by holding the power button down until the device turns off before charging to 100% again. If this is not successful then you are experiencing an issue that we are actively investigating. 

In 24 hours you will lost ~15%, but when you disable the Phone Connection on the watch himself like this:

the battery drain in 24 hours is only 7%

for me it's clear that more or less 

Sensor Hub 3.20 or 

ANT/BLE/BT 5.01

causes this issue!

Former Member  Please take a look with your Team on it, or better, gives us a Tool for Power Management like on Fenix 6!

EDITH:

could it be, that only watches affected, where Android 10 phones used?

is there someone who have probs with iOS or Android 9?

EDITH2:

confirmed drain on Android 9 and 10

any1 can confirm on iOS?

EDITH3:

confirmed drain on Android 9 and 10 and on latest iOS!