QueenBee wrote:... Sure there is a calculation that can determine the bad/weak cells, the CVLI test but that doesn't mean Nissan is going to replace anything based on it...
The 2011 service manual CVLI procedure was a test for review of battery condition when fault codes are not present. The procedure did say to replace modules containing cells that don't pass the criteria. But the manual says "performed to identify cells that the cell voltage is on the decrease (although not judged as malfunction in DTC) and this may lead to a malfunction, if left stand."
But I agree that Nissan decided the criteria was too stringent, and took it out of future manuals.
Very unlikely Nissan has done many module replacements based on CVLI.