Body battery does not work while skiing activity.

I just checked some of my skiing activities from december and you are correct, it is a flat line compared to my running activities where it decreases. When skiing I have a low HR average (mostly around 80 and very seldom above 100) compared to running where my average is higher, mostly between 130-155. BB is based on HRV (stress) but it is odd if it would stay the same for an entire day of skiing.

I would recommend that you contact support.

Doesn't work with the golf activity as well. I reported it months ago. Garmin acknowledged it, but still no fix!

Not true. Body battery graph is still working during a 4:30h bike ride or 2:30 running, but not during skiing...

Hrm. OK, I see what you mean! It seems to not show "stress" but I see a declining Body Battery! So, it may not contribute to total stress score for the day but it will chew into Body Battery.

Got a screenshot of what behavior you're seeing in Connect?

Here is what happens every time I play golf. Garmin acknowledged this is an issue but haven’t fixed it yet. 

wojtek_b said:

Not true. Body battery graph is still working during a 4:30h bike ride or 2:30 running, but not during skiing...

Otto-Destruct said:

OK, I see what you mean! It seems to not show "stress" but I see a declining Body Battery! So, it may not contribute to total stress score for the day but it will chew into Body Battery.

I think that they do some calculation of BB during running activities based on the intensity but for activities with lower intesitty such as alpine skiing (in most cases) and golf it is probably to difficult to give a good estimation. I guess that the stress level can be quite high in such activities even if the HR is low.

Too bad they don't measure stress level during activities...

Same for hiking. Really makes the body battery pointless if you are still at 100 after 20km and 1500m elevation gain... 

On the subject of body battery and stress, my BB declines during indoor cycling and treadmill work, also during my Move IQ dog walks each day. However, following the activities my stress measurement does not resume for maybe an hour or even two. If I try to obtain a stress reading by opening the widget I get the 30 second count down and then usually the message "check watch fit", with no result.

The watch fit is 100% not the problem. My live heart rate continues to update, but stress is AWOL. During this period my body battery is flat lined. If I reboot the watch the stress measurement resumes immediately, with no adjustment to the watch on the wrist, and body battery drops off a cliff as though to catch up on the missing stress data influence. I reported this to Garmin yesterday and have sent in files and screen prints as evidence.

Maybe there is a lot wrong with stress and body battery, possibly with different outcomes, but broken nonetheless. These behaviours were not present when I first got the watch in mid December, so maybe a sensor or firmware update has upset things. I'm currently on 6.00 firmware and 4.20 sensor.

Example from 6th Feb. I rebooted the watch at around 17:30 and immediately my stress data resumed, and body battery adjusted. This is quite hopeless.

I think I found the issue. Up to now I didn’t bother to use Hrm-belt for skiing but I used it always for running, cycling and even swimming. I took today hr-belt for skiing as well and it seems that body battery is normally declining. 

So my observation is: body battery does not work at all during activities with wrist hr. The behavior is even worse than during watch off hand - because when watch off hand it estimates the drop of body battery. While activities with wrist hr the graph is totally flat