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    Race S: Extremely high battery use rate

    Scheduled Pinned Locked Moved Suunto Race S
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    • S Offline
      Sieunhan_Binh @2b2bff
      last edited by

      @2b2bff Do you have sleep tracking and 24/7 heart rate monitoring enabled?

      J 2 2 Replies Last reply Reply Quote 0
      • J Offline
        jobtoll @Sieunhan_Binh
        last edited by

        Bought my Race S in December 2024. With no activities recorded but with sleep tracking turned on the battery went from 98% to 73% in 25 hours. This does not seem excessive.

        S 1 Reply Last reply Reply Quote 1
        • S Offline
          Sieunhan_Binh @jobtoll
          last edited by

          @jobtoll The manufacturer claims that if you train with GPS for 5 hours a week and keep heart rate and sleep tracking enabled, the battery will last at least 5 days. However, I’m only getting 3 days, which is really disappointing.

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

            @Sieunhan_Binh said:

            @2b2bff Do you have sleep tracking and 24/7 heart rate monitoring enabled?

            Indeed, I have

            The manufacturer claims that if you train with GPS for 5 hours a week and keep heart rate and sleep tracking enabled, the battery will last at least 5 days.

            Where have you read this?

            Suunto Race S
            Garmin Epix Pro

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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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