A good post for an existing topic. Mods, please merge with the 2013 bar loss topic.
Definitely not lizard battery, which didn't begin until model year '15. See http://www.mynissanleaf.com/viewtopic.php?p=513306#p513306.Silverfish said:I hardly knew ye. But I knew it was basically a 10-bar Leaf when I bought it about 2 months ago.
Stats, for the curious:
2013 Leaf SV (built in 2/2013, so probably no lizard battery)
...
I hope the downward trend doesn't continue quite so quickly. But it is what it is.
cwerdna said:Please don't open new threads for each capacity bar loss. MNL would get out of hand if everyone did that. We already have a '13 to '14 capacity bar loss thread at http://www.mynissanleaf.com/viewtopic.php?f=30&t=18269. My own loss is at http://www.mynissanleaf.com/viewtopic.php?p=511915#p511915.
Also, some of the (well, at least one) moderators have complained about people unnecessarily starting new threads.
http://www.mynissanleaf.com/viewtopic.php?p=149582#p149582
https://www.mynissanleaf.com/viewtopic.php?p=52644#p52644
http://www.mynissanleaf.com/viewtopic.php?p=517564#p517564
cwerdna said:Definitely not lizard battery, which didn't begin until model year '15. See http://www.mynissanleaf.com/viewtopic.php?p=513306#p513306.
The 4/2013 and later built '13 Leafs and presumably all '14 model year Leafs seem to have a better chemistry, but not as good as the "lizard" battery.
If the downward trend continues as quickly and you don't live in a hot climate (I have no idea where you're at), you were a victim of a reset.
Interesting. I had thought that the lizard battery didn't officially appear until 2015, but was actually quietly put into service in later 2013. I hadn't realized there were gradations of battery types in between.
No, lizard pack was NOT put into service in 2013. It appeared in model year ’15 Leafs, that began production sometime in mid-2014. Please see earlier links.Silverfish said:Interesting. I had thought that the lizard battery didn't officially appear until 2015, but was actually quietly put into service in later 2013. I hadn't realized there were gradations of battery types in between.
LeftieBiker said:Interesting. I had thought that the lizard battery didn't officially appear until 2015, but was actually quietly put into service in later 2013. I hadn't realized there were gradations of battery types in between.
There are several generations of Leaf battery, most of which I have given nicknames to distinguish them from each other. The first, terrible pack made from 2011 through March of 2013, is the "Canary" pack because it is not resilient or long-lived except in optimum (chilly) conditions. The pack introduced in April of 2013 the "Wolf" pack because it is tough and resilient in all conditions except sustained high heat. The "Lizard" pack you know about. It is somewhat better in extreme heat, but still not fantastic. Then in 2016 Nissan took two steps backwards with the "Lettuce" pack, with more initial capacity but such terrible degradation that it can easily fall below a Wolf pack in range after two years or less. The 40kwh pack in the 2018 Leaf seems, unfortunately, to be another version of the Lettuce pack as far as durability of capacity goes...
LeftieBiker said:Then in 2016 Nissan took two steps backwards with the "Lettuce" pack, with more initial capacity but such terrible degradation that it can easily fall below a Wolf pack in range after two years or less.
LeftieBiker said:Hopefully the almost 1% loss of SOH per month I'm seeing, despite my cooled garage, is just another BMS "error."
Pretty much what you'd expect as Nissan made no fundamental changes in the 30 kWh Leaf that would have caused it's pack to perform more poorly than the last 24 kWh model that it replaced. Having said that, it has been interesting to see Nissan move forward with corrections in 30 kWh BMS programming and independent analysis confirming the anticipated result.alozzy said:That's a very well written report and their methodology seems solid too. Pretty clear that the software update is legit, dealing only with an under reporting of SoH and the related GOM range estimates. Based on their findings, it's also clear that the 30 kWh packs are degrading in a very similar fashion to 24 kWh packs. Nice to have an independent analysis, rather than just taking Nissan's word for it.
You can bet the LEAF battery engineers caught flak when the batteries were clearly going to need replacement in large numbers by year ~ 3 when then execs were promised 6 - 8 years.Dooglas said:it has been interesting to see Nissan move forward with corrections in 30 kWh BMS programming and independent analysis confirming the anticipated result.
Pretty much what you'd expect as Nissan made no fundamental changes in the 30 kWh Leaf that would have caused it's pack to perform more poorly than the last 24 kWh model that it replaced.
As has basically every other manufacturer. You were expecting a dramatic increase in battery degradation from everyone who increased energy density of the pack?LeftieBiker said:They increased the energy density by 25%.
Dooglas said:As has basically every other manufacturer. You were expecting a dramatic increase in battery degradation from everyone who increased energy density of the pack?LeftieBiker said:They increased the energy density by 25%.
hmmwv said:Just saw my AHr dip below 50, so my 2013 with 53,144 miles is at 49.756 AHr / 76% SOH. This is down from 55.446 AHr / 84% SOH back in March of this year. This summer has been brutal on the car, this is the fastest drop in capacity I've seen. Since I've never changed driving, parking, and charging habits the overall higher temperature can be the only explanation.
I agree about the climate, but I have my doubts that mileage matters much. Still 12 bars in 4 years, thus under 4% loss a year, is something only a LEAFer with trampled expectations can celebrate.cwerdna said:https://www.facebook.com/groups/nissan.leaf.owners.group/permalink/2215132265224269/ has a report of a '14 in the UK that just passed 100K miles with all 12 capacity bars remaining. The mild climate there is really helpful.
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