Expedition Mode allows the user to prolong the battery life of the GPSMAP 66.
When enabled the screen will turn off and the red light next to the power button will occasionally flash to let you know the unit is still powered on and recording data. For instructions on enabling Expedition Mode review the owner's manual.
Key Features of Expedition Mode:
The screen will power off - Press the power button to use as normal
Track points are dropped via a smart recording mode that will determine the best interval to log based off of movement and other factors
Track log detail will be reduced when the setting is enabled
Bluetooth connections are disabled while in Expedition Mode
ANT + connections to Heart Rate monitors or other sensors are disabled while in Expedition Mode
For the best battery life in Expedition Mode use Lithium AA batteries, especially in cold weather environments. In cold weather environments Lithium batteries have more power and will last longer. approximately 170 hours. Alkaline batteries are expected to last approximately 100 hours.