Have anyone ever experienced this?
When going out for a run with almost full battery (say 85%), the level drops to <5% immediately after starting an activity. A low battery warnings appears before the fenix 5 watch shuts down completely. The only way to wake it up is to plug it to charger. When restarted I read a quite high battery level (say 82%). It doesn't seem like it's a battery problem, but maybe some faulty measuring of the battery level/voltage when in activity. The watch works fine between activities...
I've tried factory reset and contacted support. maybe they'll answer some day, but I don't put my hopes up :)
It was bought March 2018. That's not an old watch in my opinion. Such an expensive watch should work for more than 3,5 years.