Race S: Extremely high battery use rate

[jobtoll]

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.

[Sieunhan_Binh]

@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.

[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?

[withManish]

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.

[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

[withManish]

@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.

[Sieunhan_Binh]

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.

[sindavide]

@2b2bff
Does this look a lot to you?

[sindavide]

@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

[2b2bff]

@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…

[sindavide]

@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

[elbee]

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)

[2b2bff]

@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…

[Miroslava]

Same here, yesterday evening 100%. Today early morning after 7 hours only 85%. I try soft reset and i will see

[André Faria]

@2b2bff said:

@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…

I am on the same boat.

[withManish]

@Miroslava, don’t do that; There is absolutely no difference, and you will spend time reconfiguring the watch.

[André Faria]

@withManish did also soft and hard reset, seems the same.

[Mff73]

@withManish said:

you will spend time reconfiguring the watch.

Soft reset is a restart and not requiring a reconfiguration. Even if not cool, it can refresh watch memory/cache/etc…

[André Faria]

For other watches people talk about a full cycle of discharge/charge, I will give it a try.

[Miroslava]

@André-Faria I went for a run in the forest today. I ran for 2 hours and 20 minutes and the battery only used 5%. It looks like it’s ok after the soft reset, let’s see.