Software Update 2.48.16 (2025 November Rain release)
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@segi_pn Actually I doubt that Suunto do any predictive calculation based on user profile usage. IMHO they just measure normal % based on some battery voltage graph they have stored on the watch. When you do an exercise they transform the % into hours left based on their datasheet (e.g. if 65h in multi-freq GPS is the spec and you have 50% left, they will say 32h left). However, when you finish the activity (higher consumption) the normal % will immediately be shown to be lower (I think based on the battery voltage). This doesn’t explain the change in the graph trend which seems like a bug to me (e.g. maybe the BT remains connected to some device after the activity or maybe syncing to the app got stuck).
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@segi_pn Thanks for the picture. It made me smile. I appreciate your time.
I think it’s a coincidence. During the green line I had the watch with many functions off, so the consumption should be low. Also, one run shouldn’t eat 5 days away.
The previous cycle I made a graph as well, and the same occured on different percentages (and only after a run). The difference then was that the drain was bigger and a soft reset helped.
It’s still following the green line. I’ll do a short run in a bit. Maybe that’s what the watch (or I) need!
We’ll see in a few days! I’ll keep sending Suunto batterylogs every cycle till the problem is solved
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@Gideon-Kaempfer maybe it is time to start a new thread about battery physics.
Just to correct you:
the current battery charge level is not derived from a voltage measurement. Instead (as with all state of the art battery meters) the charge going into and out of the battery is integrated and subtracted from or added to the battery capacity.
As this method might miss a Coulomb here and there, the meter is calibrated when the watch is fully charged. At a certain max voltage the meter is set to equal 100%t6, S6, Elementum Terra, Ambit 3 Sapphire, Spartan Ultra Copper, Traverse Alpha, S7 Graphite LE, S9B Ambassador, S9P Granite Blue Titanium, S9PP Titanium Sand, Vertical All Black, Race Titanium Charcoal, Race S All Black / Titanium Courtney, Run Lime
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@Egika there is so much stuff that happen while I innocently running with my watch
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@Dimitrios-Kanellopoulos Yes, the “ghost” bip/buzz when you power on a BT sensor is still there. Battery drain also, because it seems that BT process continues searching for BT devices as in the previous sw version.
Verified (and easily reproducible) in my Suunto Vertical.Suunto T3D, Suunto Spartan Trainer, Suunto Spartan Ultra (retired), Suunto 9 Baro (retired), Suunto 9 Peak (retired), Suunto Vertical Titanium Solar, Suunto Race S.
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@thanasis According to my tests (also performed with the previous software) th BT connection process keeps searching for devices after finishing activities. I can reproduce the behavior just powering on my Heart rate sensor (Coospo), the watch bips and buzzes when connects to the sensor, in the watchface screen outside activities.
If you soft reset the watch, BT connection process is restarted and doesn´t search for devices until you start another activity.
In my case this is causing a 12-14% battery drain by day outside activities (Vertical Solar Ti).
I sent logs to Suunto. -
Just want to confirm that I’m also still experiencing the same battery behavior as @jjpaz above with no improvements over the previous software. Still have random ghost notifications (buzzes) outside of activities that seem to be BT related and random high battery consumption. Some days are good with normal battery drain, while others have significant drops, up to 10-15% overnight. This is for both 9PP and V1.
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@Matúš said in Software Update 2.48.16 (2025 November Rain release):
Last Tuesday morning I’ve updated my 9PP to this firmware: during the evening, reached a battery level between 10-20%, I fully recharged the watch.
Today (now), after almost 7 days, the battery level is 64%.
From firmware 2.40.44, the last one stable and used on my watch, to 2.48.16 I’ve not changed anything in my routine and device use: actually, with 2.40.44, a 100% battery lasted more or less 8-10 days.
I will continue monitoring the battery discharge, to 10-20% and for the next battery cycles, but, at the moment, firmware 2.48.16 (for me) it’s doing its work.
For me it behaves like you describe but only until I have any sport mode activated.
Then nothing can stop the drain out of the battery.
3-4 days on 9pp. Factory reset or soft reset didn’t help. -
@Egika very interesting! I wasn’t aware that it’s become that sophisticated. I’m still using flashlights that report voltage levels
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@jjpaz I have the same problem with SV and Suunto smart belt as I posted yesterday… these beeps appear several uncountable times during training and also after training… yesterday it seemed that the belt won’t disconnect after activity
Suunto Vertical Titanium Forest/Dark Ruby/UTMB/Courtney_Edition
Suunto Wing
Suunto 9 Peak Pro Titanium (owns my wife now)
Suunto Spartan Ultra
SA iOS 3.5.1 (20789)
Instagram @superflo75 -
@Horizontal_2 I’m interested in seeing some of your new graphs.
How did you make the graph? Which software do you use? Maybe I’ll try taking my own measurements with my Suunto Vertical. -
@segi_pn I’ll update in a day or two. I’m trying to turn on the Flight mode for the night, maybe longer. Just to see if the drain comes from connectivity. The graph of previous cycle was more exciting because sometimes it did get the 5% per day easily
It’s just Excel. Everytime I see the battery drop 1% I note the time in my phone. One or two times per day I update the sheet and voilla. Sometimes I skip a percentage
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@Horizontal_2 said in Software Update 2.48.16 (2025 November Rain release):
I’m trying to turn on the Flight mode for the night, maybe longer.
Make sure you enable flight mode from Settings, not from Control panel. Don’t know if the bug is still there with current firmware, but Airplane mode toggle in Control panel would not disable Bluetooth. 🤨
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I have tried putting aeroplane mode on from the settings whilst at work, battery drain continues no different to if aeroplane mode is not on, approx 1% every 2 hours on average sitting around.
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@Matúš
The same attitude for my 9PP after the latest update. Charged last Monday evening, then I updated the firmware and today is 42%…it seems the watch is back to the native performances!
Let’s see how this is going in the future cycles! -
@SuperFlo75 Do you have a ‘ghost sensors’ list in your list of linked sensors? Yesterday I trained with my Race S instead of the Vertical (also with the Coospo armband) and battery drain seems correct and watch doesn´t buzz when I power on the sensor after activities.
Difference between two watches? Race S doesn’t have ‘ghost sensors’, Vertical has 3 or 4 ghost sensors in the sensors list.
Yesterday morning also I charged Vertical, 100% battery, soft reset the watch and keep it in the table (I trained and slept with Race S) . Now battery is still 100% full battery.
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@jjpaz I don’t have the problem with ghost sensors…
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@Sergey-Balbir said in Software Update 2.48.16 (2025 November Rain release):
@Matúš said in Software Update 2.48.16 (2025 November Rain release):
Last Tuesday morning I’ve updated my 9PP to this firmware: during the evening, reached a battery level between 10-20%, I fully recharged the watch.
Today (now), after almost 7 days, the battery level is 64%.
From firmware 2.40.44, the last one stable and used on my watch, to 2.48.16 I’ve not changed anything in my routine and device use: actually, with 2.40.44, a 100% battery lasted more or less 8-10 days.
I will continue monitoring the battery discharge, to 10-20% and for the next battery cycles, but, at the moment, firmware 2.48.16 (for me) it’s doing its work.
For me it behaves like you describe but only until I have any sport mode activated.
Then nothing can stop the drain out of the battery.
3-4 days on 9pp.As reference, I always use standard sport modes, with battery sets in “Performance” and HR belt.
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For your information, I also own the Vertical 1, Race 2 and Run. I use all three regularly and switch between them depending on the sessions and races I’m doing. I have to say one thing, though: the battery life of the Run is pretty impressive. With the battery issues of the V2.XX.XX, it lasts almost as long as the battery of my Race 2, which itself lasts longer than the battery of my Vertical 1.
The Run is V3.XX.XX, which makes it seem even more like there’s a software bug lurking somewhere… Another significant issue with the latest Suunto updates is that some of the bugs described as ‘fixed’ are not actually fixed at all: notably the recovery widget, which is still not synchronised (it is on the Run), and the battery drain (which is undoubtedly the most annoying).
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Something is definitely not right with battery drain. I’ve updated it when FW was released, I did one full charge/discharge cycle. Last night I charged it to 100% and removed the watch from charger at 23:00, when I went to sleep. Watch was on my hand for sleep tracking, etc. Right now 11.5 hours later I have 94% of battery, that is 6% over night only for sleep tracking, no activity today.
EDIT: before this FW version, battery drain was normal, battery life was about two weeks with activity
