Remove the 2 side panels left and right of the seat, a firm pull out at the rear and then unclip the front. No brute force is required just firm gentle pressure initially, then then finding the right angle to remove these panels. There is an allen bolt on either side, remove and lift the seat. Battery is there! Be careful the battery terminal is a nightmare. If you disconnect them be very careful part of the terminal doesn't drop out!! If it does and it ends up in the engine, your screwed!!
Fletch, January 2009