I went on a 100 mile round trip yesterday. I had my Garmin Etrex Legend sitting on the dash of the automobile, running on internal battery power. We stopped for a while, a couple of times, but I just left it running. I thought I had tracking on.
A couple of hours later I picked it up to view the display and it was off. I assumed the battery ran dead and because it was late I didn't pursue it any further at the time. Today, I decided to download my track and see where the battery died.
When I turned it on, the battery was showing almost a full charge. I tried to download my track and discovered there was nothing there. I of course found I had turned it off previously and forgot to turn it back on. Thank goodness I didn't need it to back out of a wrong turn. ;^)
My question is this: Why did it turn itself off? Could it have overheated sitting on the dash in full sunlight? Or is there some auto-off feature that I'm not aware of?
I know there is an auto-off when you lose external power. It gives you a count-down timer and says to press-any-key to keep running off of internal power. Not pressing a key will cause it to automatically shut off after so many seconds or minutes.
Alan, W4WMM