Report Ayrshire Federation Tracker Bird in Notice Board Posted May 28, 2023 Archie McIntyre is the man to contact for details. I believe the battery lasts about 10 hours but he is the man. I am informed that the battery is will last up to 35 hours. Ours are set for 10 hours and track every 20 seconds. If the tracker is set for 35 hours it tracks every 3 minutes.