Outer Limits 4x4 Board

Does anyone know where to buy Cat batteries in the Sydney region? I've searched the Cat and Westrac websites and they're not very clear.

Cheers,
Ben

http://www.westrac.com.au/Pages/Contact.aspx" onclick="window.open(this.href);return false;

http://australia.cat.com/parts/batteries" onclick="window.open(this.href);return false;