Hey there. Welcome to the forum and sorry for your troubles. There was a battery cable recall that was related to the cable and the fuse box. This does not sound the same, but you might be able to get the battery cable replaced. Post some pics and folks will help out. Im sure once you get this figured out you will be back to enjoying your car. Dont worry too much, these things can be fixed. Start by getting a proper battery and having it registered after you dig into the cable issue.
http://www.m3post.com/forums/showthr...=battery+cable