Hi, I've been running a new 2.53 MBP for the last few months. My old 15" PowerBook G4 has been laying dormant in the meantime. I've just done an erase and install of Leopard with the old machine to sell it on to a friend. However, now the battery won't be recognised and if the power plug comes out, the computer immediately shuts off. I won't feel comfortable passing it on in this condition. Any ideas on what the problem is and how it can be fixed? Thanks guys!