press the start button twice without having your foot on the brake.

 

Actually accessory is just pressing it once with the foot off the brake. the second time is the ON setting but with no starter crank.

I think that's what you meant.

When I first got my G37, I was screwing up leaving it in the wrong state when messing around with the ACC mode (until I started looking at the push button lights to tell you the switch state)

 

I'm going mainly by the experiences of my wife and I. She had a Honda Civic, Toyota Camry and Infiniti I30, and all three batteries had to be replaced within 3 years. She is not the type of person that sits in her car and listens to the radio, so it wasn't due to excessive use. My 2006 G35X was fine (as was hers), but this issue has been with different brands of Japanese cars. Every one of the batteries I replaced in those cars were better than the one that was in it (450-500 CCA) - and I didn't spend more than $55 for the replacement. I won't stop buying Japanese cars as a result of it. I just accept it as a cost of doing business, but just something of which I am aware.

 

i just spend $200 because i mod my car and gets what is best for my car...you could spend $80 that will do the same thing but i actually have audio performance in my car that is needed more than the average car battery.

 

Mine conked out last week. Had the car for 16 months with 17K miles. No audio/video mods except LCD screen bypass.

Dealer replaced with brand new one for $25

 

Mine is on its way out too, I think I'm just going to get a yellow or red top.

 

I could imagine that might make a difference.