Marktm wrote: RelaxedGal wrote:
The battery is losing SOH a little faster than the Battery Aging Model
for Boston, but then again I'm 40 minutes in from the coast and there's no shade at my office. My car is baking on the blacktop and today is 93F with a heat index of 101F. The car was manufactured 6 years 8 months ago and the Battery Aging Model estimates 70% SOH at 7.8 years.
An amazing battery aging report by the "early adopters". When was this last updated? I may have missed it, but the statement about "recent" and "2013" indicates that not too much information on the "Lizard" has been included?
I was not involved in authoring the "aging model" but it originally covered the only known battery revision at the time: whatever was in '11 and '12 Leafs during the whole Phoenix/hot climate capacity loss fiasco: http://www.mynissanleaf.com/viewtopic.php?t=9694
. Turbo3 (he lives a few miles from me) and I did loan some equipment to Surfingslovak for him to bring w/him to Phoenix to conduct Tony's range test (results at https://web.archive.org/web/20160113132 ... p?p=228326
https://web.archive.org/web/20140714232 ... acity_Loss
(July 14, 2014) seems to be as far back as the history goes of that page, at least at archive.org. Not sure if it was hosted elsewhere before and if earlier copies exist.
It is not clear to me whether the model covers the better batteries found in Leafs built 4/2013 thru model year '14. Probably not. We didn't know those were better until probably ~2 years after 4/2013. And, 4/2013 is a good educated guess as to when the switch happened. It seems Nissan quietly made a switch as it was never announced and AFAIK, never acknowledged either.
The copy of that page from July 14, 2014 most definitely couldn't cover the "lizard" packs which we'd just learned of on June 27, 2014: http://www.mynissanleaf.com/viewtopic.php?f=4&t=17168
. It generally takes at least 2 hot summers for us to tell how a pack is holding up. BBrockman alluded to a "hot battery" (as some have termed it) being in testing in Aug 2013: http://www.mynissanleaf.com/viewtopic.p ... 54#p320754
. Presumably, that became the "lizard" battery.
BTW, Leftiebiker coined a bunch of nicknames for some of the pack revisions: http://www.mynissanleaf.com/viewtopic.p ... 20#p533420
. I'm not sure if we ever got confirmation that the newly developed cell at https://www.nec.com/en/global/techrep/j ... 120112.pdf
became either the "wolf pack" or the "lizard pack". One would guess that lessons learned from that were incorporated into some packs that went out to customers.