Software Update 2.48.16 (2025 November Rain release)
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@segi_pn Awesome! I like it. It’s insightfull and clears the head as well! Maybe we should start a different post dedicated to this

It’s interesting to see your drain is at the start a bit high as well. According to the website the trendline should be 30 days. Are you doing interventions to change the trendline? Just after 2 days it seems to be slightly better
My drain is acceptable atm. I don’t use the HR-belt at the moment to check the drain doesn’t occure. Unfortunately my time and old injury doesn’t allow to run right now, so I can’t really check.
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Which HR strap are we talking about here? I have the arm strap from Coros and can’t complain about the battery life on either the Vertical 1 or the Vertical 2.
The Coros strap goes into standby mode when it is no longer in contact with the skin. Maybe that’s an advantage.
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@runomatic It’s the Polar H10 for me. I whip out the battery to be sure it’s not trying to connect. Also I’m not always at home when the battery drains. So it seems like the watch in searching for it
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Hi,
an update to the pace zone bug report:
I said in Software Update 2.48.16 (2025 November Rain release):
@pavel.samokha Just tried to use user-defined pace zones with my Race 2 (SW version 2.48.16). I found that as soon as I change the predefined zone limits in ‘Settings’ > ‘Training’ > ‘Intensity zones’ > ‘Advanced zones’ > ‘Running’ > ‘Pace zones’, I cannot select pace zones for trainings anymore.
After changing the zone limits, the possible selections in the ‘Running’ > ‘Exercise options’ > ‘Intensity zones’ menu do not include the ‘Pace zones’ item anymore.
A soft reset of the watch resets the pace zones to the default values (which unfortunately are much too fast for me yet) and re-enables the ‘Pace zones’ menu entry in the ‘Running’ > ‘Exercise options’ > ‘Intensity zones’ menu.
This means that for now, I can only remember my pace zone limits and look at the watch often…!?
The ‘Pace zones’ menu item also disappears when editing the heart rate zones to something else than the pre-calculated ones (that means, after a soft reset, first select the now-existing ‘Pace zones’ in the training, edit them to sensible values, then change the heart rate zones -> ‘Pace zones’ menu item is gone, training intensity by pace cannot be selected anymore).
This means that I only can use pace zones after a soft reset and without changing my heart rate zones. Unfortunately, this leads to wrong training assumptions (trainings show up as anaerob or even VO2max though I am definitely in my individual aerob zone).
This severely limits the use of the Race 2 for me! Hope there will be a fix for that…
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I have nothing quantified but here is my 2 cents analysis about battery drain.
Even after this update, I still observe a battery drain bigger than expected.
What I have found is that, after charging the device, if I turn off the watch and then reboot it, then the battery acts much more normally and without any suspicion of battery drain.
Does this make any sense ? Is it possible software or hardware wise that a shut down of the watch can somehow fix the battery drain issue ?
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@v.sacre The reason is that, after first activity with BT sensors connected, increased battery drain can happen after finishing the activiy. My “workaround” is to soft reset the V1 after every activity… This bahavior keeps the battery drain in a “stable” drain.
I can test the “zombie BT process” powering on my Coospo HR armband, V1 vibrates as if it was connected to the sensor.
And this doesn’t seem to be happening in my Race S.
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@runomatic I think there is something to what you just said. Coros shuts off, but others do not. I had to replace my Garmin HRM Pro + battery that had 85% before the update after the update. Left the HRM hanging in my bathroom. I think that it was connecting every time I was in range. I do not use the HRM enough to go from 85% to 5% in a couple weeks. When I approach the HRM pro + when it is dry it does not automatically connect. However any time I am in range of it while the belt is wet it will connect. Even just when I walk by and am in the connectivity settings.
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@Александр-Даниленко I can confirm this, swimming algorithm is broken. I don’t really know if it is because of the latest firmware, or Race 2 (I have switched from Race), but last time I had swimming training watch missed distance by far. At the end of training I was paying more attention, it misseg almost every seconon 25m distance, I counted more than 10 missed distances. My swimning style is exactly the same it was before, and usually it missed one or two distances in about 2.5km.
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This are my notes of battery status with this firmware:
- 14.11. 19:20 100%
- 15.11. 20:19 94%
- 16.11. 21:14 87%
- 17.11. 18:27 81%
- 18.11. 20:12 71% (1h40m GPS)
- 19.11. 20:36 65%
- 20.11. 18:32 57%
- 23.11. 19:08 37% (20m non-gps)
- 24.11. 22:00 27% (20m non-gps
- 25.11. 17:53 20%
It looks like it would do around 13,5 day if i went from 100% to 0%. I run it with AOD off, low brightness and as you see i did almos no excercise. Since with 24/7 tracking it is advertised up to 18 days of battery life. This is not ideal but it is not worst too. I would expected at least 15-16 days with excercise i did.
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@runomatic I use only the Suunto HR Belt which seems to make trouble

I wrote about this some days ago