It's easy to tell a cold snap, because vehicle batteries die. A month ago, my daughter called me and told me that her car wouldn't start. She was in the Wal-Mart parking lot, so I grabbed some tools and went to her assistance. Sure enough, a quick look at the battery revealed it was five years old, so I put a battery in her car. Easy-peasy.
Two weeks ago, I tried to start my work car without success. Lifted the hood, saw that the battery was six years old, so I went to the parts house and bought a battery. Such is my karma.
An hour ago, Milady called me. She's stuck at work, the Explorer won't start. She purchased that vehicle brand-spanking new in the autumn of 2009. That battery is four years old, and Ford probably didn't put a five-year battery in that vehicle. Guess what I'm doing this afternoon? You guessed it.