I went dove hunting a couple of weeks ago. Garmin ran low on battery. Software started screwing up.
I changed the battery and updated the software online. Thought all is ok.
Went Mountain Quail hunting. Got separated from buddies thinking I got the situation on the control with my Garmin.
Garmin was giving me wrong information where my intuition was telling me to go the other way. It took me a couple of hours to find out that my device wasn't working well. "Shoot!What am I gona do?"
I recalibrated the compass and then everything was fine.
Be careful. If you run low on batery, your device might start malfunctioning. Recalibrate and test it before getting lost in the woods.
Have a cigarette lighter charger so you don't use up all your battery.