got a big question. My battery died, I am looking for another one, trouble is the part number 12N9 BS on the battery that came with the bike I cannot find a cross reference match to it. I bought a 12N9-4B-1 at auto zone but it was about an 1/8 inch too tall to fit in the battery box.. I cannot seem to find anyone who has one that fits this bikes box. I personally cannot afford a $100 battery as I have seen suggested... anyone know of a cross reference to this battery or what will fit the box with the correct 12v 9ah?