The connections to your batteries matter. How you make them, how you torque them and how clean they are all matter. It can make a difference in your personal safety.
While doing a winterization, and getting ready to equalize these batteries, I noticed something strange that I could not really put my finger on, then it hit me. The battery case around the positive post was melted and un-even looking. When I grabbed the positive battery cable it was physically able to twist on the post.
Upon closer inspection it was apparent that the battery terminal got so hot that it began melting the plastic of the battery case.
Why? Read on.....