The temperature has been under 40*F the last few mornings when I've cranked the battery before work. When I initially put the key in the starter position, the car cranks for a second and then dies. I then put it in Off for a couple seconds, then back to ON, and a few seconds later turn it to the Start position, where it proceeds to crank a few seconds then start up like normal. Should I replace it or does it just need a charge? It's a stock Mopar battery..