Since we're on the topic, and it's been brought up a bunch of times, I have a question that has not been answered here.
Some people take the battery out, some don't. Some use a tender, and some don't. Some people take the battery (and sometimes the whole bike) inside, and other's leave it in the cold. There's at least one person for each combination of these that will claim that their batteries last crazy long, and that the others are all wrong.
Does anyone have any objective proof that putting your battery on a tender is the best (or worst) option?