The negative of my wife's car battery pole is slack to touch. This is not good! It is so slack I can remove it by using 2 fingers.
Step 1: Corrosion.
As you can see the pole has significant corrosion. This needs to be removed.
Step 2: The Tool.
This brass brush is perfect for cleaning lead poles.
Step 3: Cleaning!
Carefully brushing the pole and the clamp, I made sure all surfaces were clean.
Step 4: Completion!
Using a 10mm Spanner I tightened till snug. Now the clamp is secure on the pole and the vehicle ready for the road!