The last battery I had installed in my car before I sold it was simmilar (or the same. . .can't remember). Theoretically you could drill a hole through it, and it would not leak. Supposedly some type of gel inside, as opposed to the typical nice caustif "stuff". Tyler, want to take a peak and see what type it is? Michael -----Original Message----- From: Steve Rubano [mailto:srubano@xxxx] True, but if you get the Optima Battery (Red Top one) it's built to take the abuse. Not to mention that you can even install it upsidedown if you wanted to