goldbrick wrote: I'm not a litigious person but if you come in 12 hours after the warranty period expires with a missing 4th bar you will be denied a new battery since it is out of the warranty period.
Nissan evaluate each warranty request on a case by case basis. There is history of them granting warranty replacements out of warranty, or at least making monetary concessions. Feedback regarding you as a customer from your dealer is one of the factors they take into consideration when evaluating out of warranty requests. It's not one size fits all.
Legally they have the deck stacked in their favor. Customer relations may be willing to act above their legal minimum response.