I've come to find out that the glue works just as good as water so far. I've replaced water with Elmer's glue and I still get a voltage. So Yes Glue does work! Its amazing that glue works because when it dries it has lost all of its water, so why does the cell still work? So far I know that Caulk and Elmer's glues work, so other glues might work as well. I'm calling this idea the Glue Battery for obvious reasons. It works for both dissimilar and same metal plates too.