This may sound strange but let me tell you still winter at my place with subzero, my bike gear is well packed away in my basement.
Somewhere back 2-3 months ago I charged the Edge 1030 last time and left it on the bike with GPS ON to drain slowly in standby, checked couple days ago still more then 50%.
How can I empty the battery to re-cycle with charging? also the front light I turn it ON but once the Edge is ON all goes to sleep (or standby)