I know we have all heard them.So lets discuss them and see if they are true.I will start with this one.A few years ago I was working on my 69 impala in my grandpas shop.I had my battery laying on the ground.Puffing away on his cigar my grandpa kept saying "You better pick up that damn battery before all the juice gets sucked out of it"Is this true?I have been told this several times.Whats in concrete to suck the juice out of a battery?