Astros said:
DougWantsALeaf said:
Astros,
My SOH and time with the car is pretty identical. I am believing more and more this is algorithm at work, and less actual SOH.
Yes, I think so too. Especially since so many Leafs in different locations are showing exactly the same behavior. I think it will be very interesting to see what the reported SOH is when the first Leaf+'s start losing their first bar.
I have to agree. I am not a proponent of tracking my true range by charging to full and running the pack to near dead so I don't have that baseline to check but wondering if that would even work. The question now becomes is the algorithm hiding a portion of the capacity? If so, then why? TBH; I wouldn't have any of these questions if "all" of us were in lockstep on degradation rates but then we have Gerry who stands alone with a significantly (not really but when one percent is perceived as Earth shattering as we LEAFers tend to you...well, you know :roll: ) lower rate of degradation under the worst possible conditions; full charging, not charging daily and living in Phoenix.
Everything he does "should" not be good. But in his defense; LEAF packs have demonstrated good hardiness when driven hard. Recently at WELL over 150,000 miles, A Washingtonian lost his "first" capacity bar on his 2015. It would appear that his rate of degradation was very low until he was up around 150,000 miles (had SOH still over 90%) then it accelerated quite a bit losing his first bar at 155,280 miles.
All things equal, Gerry could lose his first bar at well over 300,000 miles. Now if we look at "lighter" drivers, we have another Washingtonian who was driving a 2015 as well losing his first bar at 92,000 miles. His usage was in the average range at 17,000 miles a year. So us lighter users could see us losing our first bars at 200,000 miles or so. Expect even lighter users to have less mileage when that bar drops. So we are starting to see a baseline on the 2015's anyway. I am guessing we are still one or two years away from seeing that same line on 40 kwh packs so we have a long way to go.
Now what we don't have is LEAF Spy history on either of the two LEAFers mentioned above. The first LEAFer only started posting his stats regularly when he was at 130,000 or so miles? (The earliest post I could find was him at 92% SOH @ 141,000 but semi sure he had posted earlier)
Finally; we all know that battery stats wandering upwards is not really possible at least not in the way the earlier LEAF packs reacted. It was an obvious programming error causing the bouncy readings which was quite dramatically addressed starting with the 40 kwh packs. So everything was hunky dory until a year in, our "declining like clockwork" stats went up. Sometimes dramatically.
IOW; Despite the great progress Nissan has made, its still a work in progress.