Now if you have changed your battery in the past, you will know that getting the terminal nut to stay in the right place with little access to fiddle with it is a pain.
Pos Terminal
Neg Terminal
Here is a trick I use to make it much easier. All you need is some insulation from some 8Gauge speaker wire (Jaycar etc) cut to fit the termial hole height.
and insert it along with the nut
Now, the nut is held firmly in position and the bolt is easily fitted through the terminals and tightened with out any problems.