I am on the first disc in Midgar. I just saw the plate above I think Sector 6 (?) fall down because of Shinra. I'm with Tifa and Barret and I climbed up a very large wall by Wall Market on a wire and now I'm stuck. It says I need this battery thing to put in the battery socket, but I can't find the battery. I am trying to rescue Aries from Shinra after they have captured her in a helicopter since she is the last Ancient. Please, if you know where I am stuck at and how to solve my problem, tell me. Thank you!