If you are replying to the OP, then I don't understand your reply/suggestion since at the rate of his battery consumption he would get an excess of 6 day charge life...

I have the same issue. After almost 2 years of using this watch its battery lasts for 1-2 days. And the watch can turn off even on 80% of capacity. I can do some sport only if it's charged to 100% and only one training, then I need to charge it again…

• Do we have permission to email you? 
  Yes.
  
  
• Does it occur with a specific activity type?
  I'm using Run and Strength. The issue is actual for both.
  
  
• How often does this occur?
  Every time when battery charge of my watches lower than 50% and activity is in…

I have done every step for this and it made the battery drain even worse? It's been off charge for 3 hours, no backlight, stock watch face, and has gone from losing. 1.5% hour to over 2%? Not using it for excessive or different notifications, why have…

One thing to try that often helps, is after a FW upgrade (or if things just seem funky), reboot the watch.

It's simple and you don't lose any data.  On the va4, press and hold the upper right button until the watch turns itself off (maybe 20 seconds…

I discovered that the system was in low battery mode, but did not "snap out" of it once it charged up.

Once I found out how to toggle this off, everything came back.

I've reset my watch on both the 5.10 and 5.30 updates, using only stock watch face (digital, no second hand). The watch charges to 100% just fine, but the battery drain is horrendous.

I just would like to second the fact that HR doesn't turn off when the watch is off my wrist. Also when plugged with a charging cable. Hope this issue is resolved soon!