I can't take the battery out because that flat bar thing that bolts to the body is not coming out.  This is the thing that holds the battery down in place, in a Westfalia.  It looks like it supposed to be taken out first, then the battery can move forward to be able to lift it out.  
I'm moving it sideways, looking for a spot where it may come out, but so far nothing.  I don't know the trick.
Anyone?
Westfalia battery hold down unit.
Zoltan