I live in Southeast Texas and I ride to work everyday, rain or shine, cold or hot. I have noticed that when it gets cold, 40 degrees or below the bike is hard to start. I keep her outside under a shed, covered with a battery charger connected and she is still hard to start on a cold morning. In the afternoons or when it is warm, she cranks right up everytime. Yesterday it was 29 degrees and it took multiple attempts and around 10 minutes to start her up. Does anyone know of a good battery warmer for the 9? The battery is good and has been tested, it has to be the cold weather.