So battery life…
I turned off most notifications and backlight on most situations.
I charged it on Wednesday. Today in the morning battery was mid 80s (short swim yesterday and short bike ride).
Now after a 70.3 (5hrs), battery has gone to 52. I am not sure the numbers project a long battery life running the gps.
I need to write down the date/time when I charge my 955. I keep forgetting which day 
In my case, the lack of GPS use is probably a big factor in my battery life compared to others here. I’m all indoors bike and no running 
these days.
Backlight is potentially a major power drain, and you are right to look at those settings. Backlight intensity is also worth looking at.
Battery life is dependent on the GPS settings, and the dual band settings do use more power. From the 955 manual:
Activity mode with GPS Only mode and wrist-based heart rate - Up to 42 hr.
Activity mode with All + Multi-Band mode and wrist-based heart rate - Up to 20 hr.
Not sure what GPS settings you are using, but your 70.3 usage for 5 hours would be consistent with Multiband estimates.
Multisport settings generally follow the settings for the underlying activity. Tracking OWS is difficult, and you probably want multiband for that, but road cycling is generally pretty easy to track with GPS only, which would reduce battery consumption. Most triathlon run courses have a pretty open view of the sky, so you could use GPS Only there (running switchback trails in a narrow mountain valley with heavy folliage cover would probably demand multiband).
Ah… Good point. I think I have the multiband setting. Interesting. I like that Garmin let you create multiple profiles for sports… Like I can have running and multiband running for special occasions. But i think gps with glonass works pretty good for most cases.
I have “Bike” and “Bike No Power” profiles, which change the data fields if I’m on a bike without power.
The latest firmwares have GPS “Auto Select”, which switches to multiband whenever there’s poor reception. If you care about battery life during activities, that’s what you can use.
My watch had a nice 9 day battery life when new on 11.x firmware, unfortunately the 12.x series firmware ruined this to 3-4 days. Even the latest one still didn’t fix it. It’s not my first Garmin so I know about the poor software quality and bugs, but this is still super frustrating. I hope Wahoo and Apple put Garmin under some pressure to stop being absolute shit at this.
What stats are missing? I’m in the market for the 955 but hate the idea of duel recording indoor TR workouts.
Hi! I think this is somewhat dependent on the Power Meter/Trainer. In my case with the Neo 2T, with dual recording I lose:
If you leave enable ANT+ (in addition to ANT+ FE-C) you also get:
I ended up disabling this setting because of dropouts.
i have one and like it. what are some connect iq apps people are using??
No app per se, but I did download/install a watch face: Glance Watch Face
I played around w/a couple others but that’s the one I settled on. Very customizable, lots of info, and options even w/out paying for Pro version.
I’m still considering the 955. Wondering if anybody here that has one has found the training readiness useful. I doubt I’d use it as an override to how my body feels but it might just confirm a suspicion if I was worn down a bit.
Looking at the 255 which doesn’t have training readiness or climb pro which are nice to have but maybe not necessary.
Training readiness is definitely not worth it to pay premium. The more blackbox the indicator is, the less useful and reliable it usually is. It uses the “raw” indicators such as HRV, RHR, sleep time, acute TSS, etc to compute the number that is depending on the athlete is wrong more times then right or maybe 50/50. Your own knowledge and interpretation on what is stressful to you will be much more accurate and the raw data will help inform it. Unless there are other factors that would lead to 955, then 255 is better choice that leaves budget for other things.
It works ok,
For the most part, when it say I am not ready i am not feeling great or I just had a few days of hard training. When it say I am ready its because I had a few days of easy or resting.
I haven’t found it useful. If I paid any attention to it, I’d end up working out twice a week at most.
I’m leaning towards the 255 for the reasons you state. The training readiness doesn’t seem accurate enough to be useful. And the metrics it’s looking at are already available on the 255. I find the metrics interesting but not critical to my training.
The maps and climbpro are nice on the 955 but not crucial for me.
And the 255 is slightly smaller so I like that.
I had a problem with the 955 recording a cycling activity today. Stopped for a 60min coffee break near the end and it did not want to resume recording when i started riding again. It would start recording after pressing resume, but then go back to the menu with resume and other options on it.
I had used “stop” when i arrived and then “resume” when i left. Should i have used the “resume later” function after “stop”? In what situations should you use “resume later” rather than using stop to pause the activity recording?
‘Resume later’ means that (a) you don’t get caught out by the watch deciding that you’ve finished your activity and autosaving it (after about half an hour, I think), (b) battery usage is reduced compared to just leaving it paused, and (c) you can use the other functions of the watch without tripping over the current activity. It sounds like maybe yours might have flubbed while trying to autosave and got confused about whether the activity was still ongoing or not.
Thanks for the explanation. I’ll use “resume later” in the future 
Lately I’ve found the touchscreen/watch face to be slow to respond (if does at all). The watch itself otherwise seems to work fine. Has anyone run into this?
I’ll reach out to Garmin support but figured I’d check.
heard about the 965?
I have a 955, a 530 and a Polar H10 heart strap. If i record a workout on the 530 (which is my preference), the HR data on Garmin Connect Daily Summary is miles out as it picks the reading from the Optical Sensor from rather than the 530 recording.
I could record the activity on the 955 and i expect this would resolve the issue, or record with both the 530 and 955 and discard the 530 data at the end, but are there other simpler ways to get accurate workout HR data into Garmin Connect?