Its about time i changed the battery on my bike bc it doesnt seem to be holding a charge. After looking into a new battery i realized the wide variety available and was wondering to myself, are motorcycle batteries interchangeable? I mean other than size whats the real difference?? I know in car batteries there are group sizes, cold cranking amps and regular cranking amps, but as this info isnt listed for motorcycle batteries. . . maybe someone out there knows the answer.