Stuff I've done:
-I've cleaned the terminals and the battery posts thoroughly with corrosive cleaner and a wire brush.
-It will jump for the most part but only if the jumper cables are on there well.
-I can't get the terminal clamps to tighten up (The upside down "T" shaped bolts) and consequently the terminals wiggle on the posts.
-Took the battery up to Advance Auto where I bought it and it checks out fine.
So are the terminals just not making a good connection with the battery posts? Solutions?
Crossposted to volkswagens