drrod
Site Supporter
I think this may in fact be the case. ie NOS Yuasa are different that OEM. There are lots of people (myself among them) who have experienced shorter battery life from NOS Yuasa as compared to OEM. However, I doubt that you would ever get Honda or Yuasa to confirm that. I just buy generic batteries rather than Yuasa as replacements. Life expectancy is not significantly different for me.Maybe batteries made by Yuasa for Honda, and delivered to Honda, are different.