Hi-
ive been having an odd issue with my F5 for some time now. I can easily get over a week worth of mixed usage with wearing the watch daily and using gps for runs, etc. however, when I take the watch off, the battery life seems to plummet immediately. Taking the watch off for 2-3 hours will burn 30% or more of the battery. All I can think is that the HR sensor is searching for a heart rate but can't find it, and uses more power to do so. Is anyone else experiencing this issue? Thoughts on how to correct it?
Thanks
Dan