What are the best settings to use for long activities to maximize battery life

Recommended Settings for Long Activities

1. Use GPS Only Mode:
- Switch to GPS Only mode instead of the multiband GPS mode. This can extend battery life significantly, allowing up to 31 hours compared to 19 hours in multiband mode[1][2].

2. Disable Always-On Display:
- Turn off the Always-On Display feature. This can conserve battery life, as the screen will only activate when needed. If you enable it, expect battery life to drop to about 7 days[3][5].

3. Limit Heart Rate Monitoring:
- If not essential, consider disabling wrist-based heart rate monitoring. Continuous heart rate tracking can drain the battery faster.

4. Use UltraTrac Mode:
- For ultra-long activities, switch to UltraTrac mode. This mode reduces GPS tracking frequency to extend battery life up to 34 hours, though it sacrifices some tracking accuracy[2][5].

5. Manage Notifications:
- Disable or limit phone notifications and other alerts during the activity. These features can consume additional battery power.

6. Turn Off Audio Playback:
- If not needed, avoid using audio playback, which can reduce battery life to 10.5 hours in GPS mode with audio[2][4].

7. Optimize Sensor Usage:
- Limit the use of connected sensors (like cycling power meters) unless necessary, as they can also drain battery life.

8. Utilize Battery Saver Mode:
- Activate Battery Saver Mode to disable non-essential features that consume power during long activities[5].

By implementing these settings, users can significantly extend the battery life of the Forerunner 965 during prolonged activities, ensuring they can track their performance without the need for frequent recharging.