Well today wasn't too bad in the Chicagoland area but still, temps in the 30's greatly has an affect on your battery's ability. So I'm wondering if just the temps are hindering you? I know when I was out about 3 weeks ago in 40 degree weather, I was starting to see those promblems creeping in. What is your Ah rating for the battery? Try starting it at home before you even go out.