I'm using a pre-owned F5x+ bought in early 2021. I would say battery life is still okay (charging once a week) since I'm not doing many GPS workouts. most of my rides are indoor (with ANT+ sensors). I'm planning to try Half Ironman next year which will require Swim/Run GPS activities (cycling mostly indoors). Can my 5x+ handle a half marathon for 8:30 hrs??
