I am super disappointed. Bike has lived outside for a year and a half (it was garaged for year before that). Never went more than 2 weeks without being ridden. Last time I rode it was the Friday before xmas - no issues. The last issue I had with it was on a super cold day about a month ago, it simply wouldn't turn over.

Could extreme cold and heat (2 Texas summers) have simply severely shortened the life of the battery?

I am worried that the stator could have possibly gone bad or that something is vampiring the battery (although I don't know what).