If you do a search or go to the "Accessories" section of this forum, there are lots of pics and threads about this.
For anyone on the fence of the extended battery...DO IT. You will not regret. My phone can hit 40% and it will last me all night long if I'm going out. It usually takes me a day and a half to drain in with regular to heavy usage. It's so nice to have a phone that's capable of so much that I don't have to worrying about dying on me!!! One more reason that the Droid X reigns supreme at the moment IMO