I have a 5+ year old Garmin 935. Wear it every day, one workout a day basically, probably 1/3 with GPS, for that time. I've noticed in the last few months a massive drop in battery life. It's now lasting only a few days max. Today went from a 100% charge this morning to 53% charge after 5-6 hours and I expect it will be in the teens within a couple of days.
Is this normal degradation in battery life? or is it something wrong (and I haven't changed any settings on it for like a year)?