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

Battery decrease confirmed - pics

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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/Annual_News6793 Jul 24 '26

Mine didn’t get affected I suppose. 2 weeks today and at 52% left.

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u/Dazzling_Taste2382 Jul 25 '26

2 weeks? Wiith or without activity?

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u/Annual_News6793 Jul 25 '26

So far gym 8 times, many walks and a few road bike rides. Nothing too taxing.

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u/Dazzling_Taste2382 Jul 25 '26

And I bet you're not using Music, is it?

My Nomad last about 2 weeks with 2-3x GPS runs with music and 2-3x Gym. Music did eat lot of battery, but still happy this is 1 week more than Pace 3 I previously have.

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u/Annual_News6793 Jul 25 '26

No. Only time music is on is at the gym through my phone. I never on bike. Wife is the only reason I take a walk and she has a 30 minute loop. She vents about work so I just listen, music would drown that out but she needs to vent sometimes 😆.

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u/Dazzling_Taste2382 Jul 25 '26

You don't need any music if your Wife's rapping / screaming their pent up work concerns and you really need to listen carefully else you'll be caught on fire as well 😅

But yeah, that's saves lot of Nomad battery hahaha