Deets55 said:
http://www.odysseybatteries.com/batteries/pc625.htm
This is what I use , but I had to shoehorn it in. I think there is one that is slightly smaller but I don't know much about it.
Deet, More details please on how you got the PC625 in there. Have you removed the strap mounting point at the other end of the tray to get it further in, hard up against the oil tank? And what's that buckle you've got between the battery strap and the clip? More pics please!