Does the unit work in the cradle if the battery is "bad"?
Yes. As soon as you take it off of the cradle it shuts off... No asking if you would like it to stay on via battery, but as soon as you put it back on the cradle it fires back up. I very rarely took it off of the bike so it was in the heat & the cold constantly & when I called Garmin they said that is why the battery won't hold a charge. I would've kept it & already had a new battery in it, but it wouldn't fit on my GT.