You didn't say what year your bike was or if it was the original battery. Anyway, like Willtill said, it will be fine. and I also put a tender on my bikes, alternating from bike to bike every few weeks. However, it ain't snowed here yet in northern Wisconsin, and no salt on the roads, so it's still riding season. Just add a couple more layers of clothing. Tommoro might make 50 degrees, that's good for a couple hundred miles!