I'll be driving to NW Indiana Monday. Luckily, it appears (as of now) I will miss the big snow NW of Chicago. Tuesday evening, I'll be driving to Lisle. The low that night will be 12 degrees F. I have a bone stock '12 Camry that has never experienced that type of cold. The battery is good, but I believe is about five years old. I do have one of those battery jumper boxes. Should I bring it, just in case? Of course, with my luck, I'll forget about it and leave it in the trunk the night before I need it. TIA.