Join Date: Jan 2007
Location: San Diego, Ca, USA
I would have thought that the posts were a cross-point (Phillips), but you piqued my interest enough to pull the cover on my 08 and check. It is as "Smiller" indicated, that is, about a #3 or #4 cross-point headed bolt.
I just replaced my 26 month old battery with a stock BMW type because the Odessey only provides a 12 month warranty, whereas, BMW is 24 months. Next time I am going to consider the LiFePo type. By that time they should have solved the low temp cranking problem.
Good luck. Ride safe.