Mercedes: battery removal, bolt head, battery removal

Question
How to remove the battery in a 1990 Mercedes Benz 560SEC?
I think there is a lock bolt / screw somewhere? Don't have the manual.
   thanks !

Answer
If the battery sits in the fire wall well there is no hold down. IF it is located somewhere else, look at the base of the battery, as it should have a clamp with a bolt head. You may need a metric socket with extension to reach it. You may need a flash light to see it.
Good Luck
Let me know if you succeed.
Rob