My Vivoactive 3 Music has had great battery life even during GPS activities until it suddenly died after a kitesurfing session. Since then it will only last in normal watch mode for a couple of hours max. It was out of coverage and not connnected to a phone for a week when it happened. I have factory reset it but the problem persists. Software Version: 6.00. GPS Version: 2.50. WI-FI Version: 2.50. TSC Version: 2.00. ANT/BLE/BT: 6.11.
Many thanks for any help