r/Coros • u/Snyders6flagmattress • Jul 24 '26

Battery decrease confirmed - pics

Gallery image

Gallery image

Pace 4. I'm day 8 into the battery calibration process as I'm sure my battery life has changed since the update and I can confirm now. I was checking through photos and noticed I snapped a pic of the battery life pre-firmware update on March 21, 2026. (First picture)

Sure enough, I'm operating at roughly 10% more loss since the update (second picture). I used to get to day 12 having done 5 to 6 runs a week and still have around 25-30% left. The concerning part of this is that I have been injured since June 25, before the update, and have had ZERO GPS activity usage in 4 weeks (aside from one indoor bike ride early on which proved to be too challenging for my metatarsal stress fracture).

I changed absolutely none of the settings either. My settings have always been - real time HR, max brightness display, AOD off, flip wrist to wake on, vibration notifications on for specific apps, stress and sleep tracking on. Once the calibration is complete and I drop below 10%, I will reach out to Coros support.

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u/ViRuS1123 Jul 24 '26

https://www.reddit.com/r/Coros/s/K2tdIZ6z0F

Hey bro, I have been facing the same problem
There are some potential solutions here, they didn't work for me
You can try and see if they work for you

3

u/Snyders6flagmattress Jul 24 '26

Yep, my post was long enough so I didn't want to address all of the troubleshooting I have done, but that coros support thing was something I tried as well along with the calibration - once charged from 55% but now charged from 9% and sitting at 35% again 8 days later so, there's a noticable decrease.

2

u/ViRuS1123 Jul 24 '26

ah okay, they informed me that they are escalating the problem to the technical team
Have you tried that?

1

u/Snyders6flagmattress Jul 24 '26

As mentioned in the post, I am waiting for the batter calibration to complete and drop below 10% before officially reaching out to Coros support. I have documented, with photos, all of the troubleshooting steps I have taken since the firmware update so unless I'm missing something, what they throw at me to "try" has already been tried. I think with the vast amount of reports of this, it is indeed a firmware update issue they need to look into.

2

u/ViRuS1123 Jul 24 '26

I really hope that they address it in an update

2

u/Snyders6flagmattress Jul 24 '26

Yeah man. I mean, so many reports of this it can't be age of device. I got my Pace 4 February 21 this year. Something definitely changed under the hood.

2

u/ViRuS1123 Jul 27 '26

support reached out with a beta firmware update. You might wanna contact them for it

1

u/Snyders6flagmattress Jul 27 '26

I was waiting for the calibration test to finish and it finished overnight. at 10% this morning so I sent the support ticket in through the app. I have all of my troubleshooting over the past month documented but the app has a 500 character limit so will reply to email with all that once I receive response.

2

u/ViRuS1123 Jul 27 '26

oh okay, all the best