I need a replacement battery.

Hello guys, I have a White Ice Nike Fuel Band and I cant seem to find the batteries for it. When I do find them they seem to be out of stock. What I think happened to my Fuel Band was that some water got in it and the batteries short circuited because they seem to be inflated. Sometimes the fuelband would get warm also but I thought it was just my hand. Can someone please tell me where to find batteries for it?