Yes here is a really stupid one! I know the size of battery I need, but when I got my bike it had a bastard battery, to small and half dead. Had to keep my charger on all the time. So, I ditched it at the beginning of my overhaul.
Now I am going to buy a new one, but can´t remember where the + and - are supposed to be on it. I think that the plus should be on the right hand side at the front corner of the battery, but I´d better be sure before I buy it. :?