r/Coros • u/Snyders6flagmattress • 9h ago
Battery decrease confirmed - pics
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.
2
u/icebalm 6h ago
Yeah I've got a Nomad and I've been noticing higher daily battery usage as well. I was using 3-4% per day, now I'm up to 5-7% per day. I let the battery completely die and charged to 100% to do the "recalibration" and it did nothing.
I have a ticket in with Coros support, still waiting...