I went for a ride on my Turbo Levo Saturday when the temperatures were in the mid 20's and was shocked when I arrived home. Normally I ride 20 miles and when I return home the battery has 5 lights lit when the temperature is 47 degrees or warmer. That was not the case on Saturday. I had one light blinking red. That is a big difference. Is this common? And if you are wondering, I always use the highest power setting. If it is that cold out again, would changing to a lower power setting give me much more milage?