This is really a land based question but it is about golf cart batteries hooked up in series, (positive to negative, 6 volt batteries, total of 6 batteries). I was driving my grandchildren around the farm and I heard a small pop and the golf cart stopped. I looked at the batteries and one of the battery
post had melted enough to look down into the battery
and the bolt that had connected to the battery post was totally loose since the battery post had melted off of the bolt.
What did I do wrong?