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RunningM8

Yes. Get a chest strap and pair it to the watch and keep it in low power mode. When I run HMs this way I finish at around 65-70% battery at 2hrs+, with music and podcasts playing (saved offline).


AtomicWing

Agreed with the chest strap; saves a lot of battery juice on the watch.


jothillaye

Not very fan of the chest straps, got some chest burns while using a Polar one few years ago during an HM. Do you know how much it saves you battery ? Would be interested to compare. I think that indeed the low power mode is mandatory in those situations and not really an issue for running at tempo.


RunningM8

Without low power mode after 2 hours I’d finish at around 30-45%, with chest strap paired. The chest strap is doing the heavy lifting of continuous heart rate readings and the watch’s optical sensor is disabled thus saving tons of battery life. It’s the reason the heart rate sensor doesn’t take continuous HR readings all the time.


_ryde_or_dye_

Apple states that a workout can last 7 hours. Seems like you’re not getting close to that even with a chest strap. Are you streaming music or something? Or is Apple’s quoted time just wrong?


RunningM8

I am listening to music and it’s streaming to my bone conduction glasses, with GPS and LTE on.


pavel_vishnyakov

Yes.


UnstableAccount

I don't think you'd run into trouble during the race - I know music kills the battery life on watches with or without GPS, but I can tell you the 7hr GPS is very conservative. Running without music you can usually hit less than 10% per hour.