One last thing....
There are a lot of "House Brand" batteries that aren't worth a dam. I have seen batteries from Wal-mart, chef Auto, Kregan Auto, Advance auto, and from Interstate not last more than a couple months. I've also seen batteries from the above sources not take a real charge right from the box. (they were dead the next morning)
I always stick with Die-Hard, Yuasa, or Panasonic. (but they are hard to find)