I thought it was 12.someting too, I looked up the manual & it does say 13.2 with a .108 reserve. here is the link but I am not sure it will work unless you are signed as me

....but it might.
http://techinfo.honda.com/rjanisis/p...707O00240A.pdf
EDIT: ok. I just tried it, it does go to that section of the manual, you will need to scroll down to page 242.