Stoaty wrote:I think your theory is very possible, except that my guess is that the Lizard battery was installed in selected 2013/2014 Leafs and only in very hot areas of the country. When enough data came in, they decided to make it standard for the 2015 Leafs. Some of the earlier Leafs may have it, a lot probably don't.
I would rate electrolyte purity as a minor tweak and that minor electrolyte tweaks have been occurred on an ongoing basis
I also suspect that high purity, major electrolyte tweaks takes time to ramp up production, so that there was a 2 year period where both prior and future electrolyte was used as supply improved. I don't think that Nissan would wake up one morning, head off to caltex and just started using standard grade chemical for some of these additives, (others - yes they might) it would take time to build and commission the supply of the purity required.