Sorry, I should have been more clear. I know we can't purchase OEM, but I was referring to the official S2000 replacement battery from Honda.

And btw, I got the battery, it was the SB2-100M one. Car starts up like a champ now.

 

So the Honda USA replacement is NOT the Panasonic?

 

It doesn't appear to be. I remember someone saying it was Interstate or something. At this point, I don't care, the car starts up effortlessly. I had a battery booster on me all the time and it was getting really old getting it out of the trunk and jumping the car on every start out in the freezing cold.