I left my switch on on my 2003 Anniversary Fatboy and completely drained the battery. Tried boosting from a car with no luck. The starter just kept making this winding noise. I was able to push it off and got it home and then let it set on a 6amp charger for about 7 hours. Hit the start and it still just whined.... So Im going to have to buy a battery anyways but was wondering your thoughts. Any advice would be appreciated.