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    Race S: Extremely high battery use rate

    Scheduled Pinned Locked Moved Suunto Race S
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    • withManishW Offline
      withManish Bronze Member
      last edited by

      Screenshot 2026-08-15 at 10.27.51 AM.jpg

      How much battery life do you get? This is what is claimed on the website.

      I have a setup such as “Daily heart rate off, display wakes on wrist-raise”, yet I get 7 days, hardly forget even 10 days.

      www.withManish.com

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      • S Offline
        snow* @withManish
        last edited by snow*

        @withManish said:

        How much battery life do you get? This is what is claimed on the website.

        during activity:
        ~3.2%/h, multi-band, bt enabled for chest strap H10, rise to wake, 1 S+
        ~5.2%/h, multi-band, bt enabled for chest strap H10, rise to wake, using only map view with bottom field enabled

        watch mode:
        ~8/9%/day, sleep enabled, 24/7 HR, HRV enabled, SPO2 disabled, notifications disabled, display always off, wifi & discovery disabled.

        ymmv

        Race S Ti.
        Spark

        withManishW S 2 Replies Last reply Reply Quote 0
        • withManishW Offline
          withManish Bronze Member @snow*
          last edited by

          @snow 5, just as a watch, it hasn’t been working for 7 days; generally, 5-6 days max. This all started after the firmware upgrade. Otherwise, it used to give 10+ days on a charge as a watch, and with 10+ hours of GPS-only (no heart rate), it used to give me 7 days of battery easily. (Don’t have Bluetooth on for any notifications)

          I have noticed that 2 to 3 hours of GPS use drains 6-8% of the battery.
          I have already lost hope with Suunto on this matter.

          www.withManish.com

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          • S Offline
            Sieunhan_Binh
            last edited by

            I’ve noticed that significant battery drain is caused by the 24/7 heart rate monitoring mode. Previously, the watch would measure heart rate every 3 to 5 minutes; however, after the software update, it monitors continuously—24/7—without any breaks unless you take the watch off your wrist.

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            • S Offline
              sindavide @2b2bff
              last edited by

              @2b2bff
              Does this look a lot to you?

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              • S Offline
                sindavide @snow*
                last edited by

                @snow
                No way. One night with hr enabled is about 10% batter.
                One full day with 1 to 2 hrs activity with gps is some 25%-30% at least

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                • 2 Offline
                  2b2bff Gold Members @sindavide
                  last edited by

                  @sindavide said:

                  Does this look a lot to you?

                  It is not ample, but given the small size and AMOLED with AOD it is ok. My Epix Pro 47mm that has about the same screen size, but a bigger housing, gets me one additional day…

                  Fenix 6S Pro, with a smaller housing, but MIP has been another day extra with about the same usage after 3 years of using it…

                  Suunto Race S
                  Garmin Epix Pro

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                  • S Offline
                    sindavide @2b2bff
                    last edited by

                    @2b2bff
                    But this is not the point. The point is that compared to first FW versioms now battery is crap. Before it was ok, now it not

                    2 1 Reply Last reply Reply Quote 1
                    • E Offline
                      elbee
                      last edited by

                      Besides the quite frequent 15% battery usage in 1 night (charge to 100% in the evening, wakeup with 85% in the morning), which can be mitigated by frequently rebooting my watch I now also had a annoying high battery usage during a hike.

                      I started the hike with 48% and a expected runtime of 13 hours. Aod is off. Gnss settings default and used navigation.

                      After almost 7 hours the watch went into battery emergency mode: no gps, no map, no heartratesensor. (The last one I couldn’t care less, but no navigation was quite annoying)
                      I ended the hike just over 7 hours with 1% left. A couple of minutes later it just shutdown.

                      This is really far from the advertised and expected time.

                      (Unfortunate suunto doesn’t have ‘resume later’ so during stops I count pause the time but not the gps)

                      Suunto t3c | Suunto Ambit 3 sport | Tomtom runner 2 | Garmin forerunner 935 | Garmin forerunner 965 | Suunto race s
                      Stryd | Bryton Gardia R300L | Polar H9 | Polar oh1+ | Wahoo bolt v2 | 4iiii precision 3

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                      • 2 Offline
                        2b2bff Gold Members @sindavide
                        last edited by

                        @sindavide said:

                        The point is that compared to first FW versioms now battery is crap. Before it was ok, now it not

                        For me and my usage it is now 4 and has been 5 days… not a big issue - for ME…
                        “Crap” is different…

                        Suunto Race S
                        Garmin Epix Pro

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