Hello all
for 3 to 6 month my fr255 watch has gone from upto 10-13 days of battery life to barely 3 days. I run almost everyday for 2 years.
I notice that battery drain IS very high during the night ( around 15% for one night...) And 25% for one hour of running activity.
Which means i cannot run long trail ( above 50km )anymore
Whereas during the day i'm below 5% of battery loss. Which is standard
So i think it could be related to pulse/ oximeter.
Software IS uptodate.
What are my options to recover original battery life?
I fear that Garmin upgrade thé firmware without checking battery life impact.
