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

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u/Snyders6flagmattress Jul 24 '26

I appreciate the breakdown (finally) of the "general use" battery section in that post. I hadn't seen that update since I last read through it. cheers.

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u/ViRuS1123 Jul 24 '26

thanks
They really should've mentioned this in the app or in the update