Fenix 7 Sapphire Solar - Poor Battery life after 8.37

So for all those on here using the new beta - what's your thoughts - is it fixed in that or not?

Yes, its mine. Fenix 7x SS 26 days, had a problem cuz stuck on 21 days with batt 100%, reason --> pulseox

Now I've downloaded usage monitor and let's see how long will last the battery, I have moderate activities during days, roughly 2-5 hrs with 1hr with gps and Spotify. 

Since yesterday battery life dropped 8% with 40min swimming, 1hr gym (strength workouts) and 30 min morning jogging with gps and Spotify.

I'll do some adjustment to the settings to get maximum as possible and needed body monitor with extended battery life  as possible...

Will update on going here..

I'm on beta 9.28 software at the moment, happy so far, just bugs with sync with garmin connect app, sometimes crash... use Samsung s21 ultra.

talsela said:

. And your 13-14 days uptime seems to be with activities as well? When I say mine lasts 13-14 days it's

15 days today - but I seem to get good benefit from solar.

At 8am today I left the house for a bike ride.

At 930am I stopped for a break

About 75k lux at that point

At the end of the ride (just over 2 1/2 hours)

So before 11AM I already have achieved over 150k that Garmin suggests to see a benefit. 23% battery remaining now. I will get to 17 days, maybe 18 if I do not use much more GPS.

So to me, my battery performance is no mystery as I am benefitting from Solar as you can see.

5135968 said:

15 days today - but I seem to get good benefit from solar.

15 days on a single charge including GPS activities - that's absolutely amazing (and a mystery to me). I mean, even based on the pure specs, with 150k Lux hours every day you're supposed to get 22 days in smartwatch mode only (no activities)!

When I said I'm getting 14 days - that's pure smartwatch mode, no recorded GPS activity. And that's compared to the spec's 18 (or even a bit more because I'm also getting some solar charge)

talsela said:

that's absolutely amazing (and a mystery to me). I

It really isn't - think!!!

Garmin uses 150k as a guideline.

Have a little think about what happens if soneone averages 300k+ a day or even more - if 2 1/2 hour outdoors before 11AM gives over 150k its not difficult to get far more lux during the rest of the day,. 300k gains 2x extra days in smartwatch mode or a few more hours in GPS over 150k lux.

Have you deleted the HR widget from the watchface? Try this. I did that and my battery is now perfect (it will be 26 days for my 7 Saphit and thats without solar charging)

5135968 said:

if soneone averages 300k+ a day or even more

The benefit of 150k/day is 4 days in smartwatch mode (18->22), so if you average double, I'd assume you should get to 26. But again, smartwatch mode - no GPS.

When I ran 40min this morning with music and multi-frequency satellites I lost 8%, which is the equivalent of what my watch loses currently in 24 hours in smartwatch mode...

paganini007 said:

Have you deleted the HR widget from the watchface? Try this. I did that and my battery is now perfect (it will be 26 days for my 7 Saphit and thats without solar charging)

I haven't deleted it because I like being able to glance at HR... I'll try it though just to see how great is the effect. I think you wrote your battery consumption in smartwatch mode went was reduced by 75% or so.

talsela said:

more

The benefit of 150k/day is 4 days in smartwatch mode (18->22), so if you average double, I'd assume you should get to 26. But again, smartwatch mode - no GPS.

This is why I cannot understand your struggle to grasp this.

Assume a watch uses 7 to 8% a day as a smartwatch - 2 hours of GPS uses about 8% too so 4 days smart watch mode is about equivilant to 8 hours extra GPS. 

I am 15 days averaging 300k+ lux so you can assume I have gained about 8 days smartwstch time from solar or about 16 more hours of GPS time.

There really is not much really to explain, as my gain is clearly from solar, there is no mystery or magic.

Early run before 6am so barely any solar benefit today. Now at about 15 1/2 days on this charge cycle - the 7 day lux average is about 375k lux 

So after just under 18 days I am down to 4% and the Battery Saver yes/no prompt kicked in.

About 24 hours of GPS used in total imcluding about 4 hours yesterday on a mountain hike + bike ride (good solar benefit yesterday)

Yesterdays GPS use (went from 15% to 7%)

Last 7 days solar average