Share 'No Charge and Battery Dies'

My 86 720 Kingcab had been mostly sitting for about three years under a shed.  I had started maybe run it around the farm to warm it up maybe three or four times.  Each time I would remove the battery.  Today, with a fully charged battery, I decided to take it down the road to loosen it up.  May run it two or three miles.  When doing so, I noticed that the gauge indicated it wasn't charging.  I c…