Race S: Extremely high battery use rate
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@2b2bff my bad, it was to 71%, one too many 9
But I guess counting for 80min of GPS and 24h of AOD that would still be within spec (30h GPS is 3%/h and 5d AOD is 20%/d so 23 vs 29) I guess I misread the specs
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@2b2bff I currently observe about 20% loss per day with display wake on wrist (no AOD) and all other settings being default. For example, my watch lost 22% (from 31% to 9%) in the time period since 9am yesterday to 11:30am today.
According to the website the expected battery life in smartwatch mode with these settings is 9 days, but the real battery life is about twice as short.
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@sky-runner I have AOD enabled and get about 4 days, I guess. So, not extremely high, but mabye a bit more than it used to be…
Next update is around the corner, so let’s see what it gives us… -
A soft reset after using the chest strap seems to mitigate the issue…
Edit: yesterday at 6 pm I updated the watch (version 2.53.42); the battery was at 40%. I went for a 30-minute run wearing the chest strap and didn’t perform a soft reset afterwards. This morning at 6 am the battery was at 36% (sleep, hrv enabled). So far, so good, I’d say
Edit: after four days of heavy use, afaic the battery is holding up well so, barring any last-minute surprises, I’m happy with it now
Edit: the last one I promise. Today I went trail running for an hour and 40 minutes with the navigation screen on the whole time. The battery dropped from 86% to 79%
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Feedback after updating my SRs Tuesday. Extra battery consumption seems to fixed to me and back to what is was on daily use. To be confirmed
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I can confirm now : extra battery drain on daily use has been fixed
Suunto’s devices at home :
Vertical titanium solar
Suunto Race S
S9pp titanium sand
Suunto Wing & Spark
S9B titanium Ambassador edition, A3P, X6 -
@Tieutieu I am not so sure! I have a new Vertical 2. At first the battery usage was excellent. But once I connected and used Coros armband HR sensor for the first time, the battery consumption has increased to over 10% per day in smartwatch mode. The battery was at 55% yesterday. One day later, including a 1:30h run, the battery now is at 43%. A different watch but the same issue. That doesn’t seem normal!
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@sky-runner said in Race S: Extremely high battery use rate:
@Tieutieu I am not so sure! I have a new Vertical 2. At first the battery usage was excellent. But once I connected and used Coros armband HR sensor for the first time, the battery consumption has increased to over 10% per day in smartwatch mode. The battery was at 55% yesterday. One day later, including a 1:30h run, the battery now is at 43%. A different watch but the same issue. That doesn’t seem normal!
Before this update, I had noticed a significant drop in battery life, and the only solution I had found to mitigate the issue was to perform a soft reset after using the chest strap. After the update, I also performed a factory reset, and now afaic the battery is working properly
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@sky-runner this thread is in the Race S forum and has Race S in the title. I guess it is related to the Race S then?
Race S
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@2b2bff said in Race S: Extremely high battery use rate:
@sky-runner this thread is in the Race S forum and has Race S in the title. I guess it is related to the Race S then?
Not necessaraly. There is a generic race s topic on this forum, but not a generic battery issues topic. It only means people with a race s complain, but doesn’t imply the problem is hardware, software, settings or user related.
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@elbee I mean all the Race S people say: It is fixed. Then a guy with a Vertical 2 says: no it is not.
There are other Battery drain topics, but this one has been for the Race S.
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@Tieutieu Not for me. I’m still seeing 20% drain per day.
Suunto Race S / 9 Baro / Ambit 3 Peak / Observer
Polar H10 / Verity Sense / OH1
Stryd Duo / Wind
r/suunto mod -
@2b2bff said in Race S: Extremely high battery use rate:
@sky-runner this thread is in the Race S forum and has Race S in the title. I guess it is related to the Race S then?
I know this is a thread in Race S forum because it was me who started it.
I suspect this is a software issue so it is likely the same across all models. Anyway, I haven’t had a chance to verify this with Race S. Perhaps I’ll do that next week. Currently I am using Vertical 2 and Race S is unused. -
@sky-runner said in Race S: Extremely high battery use rate:
I suspect this is a software issue so it is likely the same across all models.
Indeed as software issue, but maybe connected with the changed HR sensor algorithm? In that case it is a solution solely for the Race S. But who knows…
Interested about your results… -
@atoponce said in Race S: Extremely high battery use rate:
@Tieutieu Not for me. I’m still seeing 20% drain per day.
With new firmware and not in airplane mode i get like 12% per 12h without any activity. No phone notifications . Seems a bit high no?
I get the watch very recently and in the past firmware i used a lot airplane mode -
Same problem here, charged last night 97% 24 hors later with two hors of trail running and map navigation. 63% I am having this issue since march.
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My suunto vertical also experiences this extreme drain. You won’t get much out of this forum other than people posting to say how great their watch is. This is a an issue suunto no doubt know about but are in denial about or don’t know how to fix.
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@gone-troppo I think reporting both cases is not wrong and may be helpful to further diagnosis. Last fw fixed my 20% drain per day.
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@snow said in Race S: Extremely high battery use rate:
. Last fw fixed my 20% drain per day
It might have fixed it for now just because the watch was restarted and the watch state was reset. It might reappear again. In the past I had this issue on and off. I suspect this issue is connected to external HR sensors but perhaps it is more complicated.
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In my case, with the Vertical 1 Titanium Solar, I’m confident the issues started with version 2.43.12 released in June 2025. I had been monitoring battery consumption, which increased from about 3% per day during normal use to around 7%. It’s not a dramatic spike, but it reduces battery life from roughly 21–22 days down to no more than 14–15 days.
Wouldn’t it be enough to check what changed between version 2.40.44 and 2.43.12?
