I am new on the board, but I like the Battery. I know it is their name, but some of the others sound like basketball nicknames. I am just getting into this season, so whatever it is, I will go with!
I remember the Battery had an ad campaign a number of years back now. It was something like "The Battery... kicking cannon balls" -- maybe someone can refresh my memory.
Sandlappers were what the British called the South Carolina patriots trying to finish the sand and palmetto fortress on Sullivan's Island. The insult soon became a proud nickname after the large Brittish force was beaten back into the Atlantic with only half of their force left. Now Webster's Dictionary defines it as a person living in the SE region of the US. I guess we can include carpetbaggers too