I have a new DC 40 collar and yesterday on the last day of hunting season the collar died around 2pm i put it on charge the night before and didnt turn it on until 6am. all my other collars did fine and held there charge throughout the night. now i have my best dog out with no idea where he has gone. i was wondering if anybody else was having the same problem and possibly a way to fix it.

Just call Garmin, they will replace it for you.
Out of 6 new collars 2 have had to be replaced so far.