johnlocke
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Re: What's new for 2020?

Thu Oct 24, 2019 11:59 am

OrientExpress wrote:
Thu Oct 24, 2019 7:48 am
The 2018 and 2019 cars have a completely different battery chemistry that is much more durable and heat tolerant. As long as the average temp is between the 2nd blue and 1st red bar, the battery will be fine.
Where are your citations for a new battery chemistry? A bigger battery, Yes. Different chemistry, Maybe, Maybe not. The packaging is different to get the bigger battery into the same space. I haven't seen any claims from Nissan offering more durability or better heat tolerance. The rapidgate issue would seem to belie that claim. Nissan is still making the batteries through their subsidiary (they couldn't sell the battery business).
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jlv
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Re: What's new for 2020?

Fri Oct 25, 2019 9:21 am

LeftieBiker wrote:
Thu Oct 24, 2019 11:55 am
OrientExpress is, for whatever reason, a shill for Nissan. He regularly writes misleading and even wildly inaccurate things here. He should be treated as he'd like you to treat LeafSpy: as entertainment only.
This is very true.

But...

The SOH value in 2018s and 2019s seems to behave differently than it did in prior models. From what I've seen posted on MNL, I'm no longer sure it is as closely tied to battery degradation as it used to be.
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danrjones
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Re: What's new for 2020?

Fri Oct 25, 2019 12:42 pm

But there has to be a variable inside the computer is tied to the health bars being displayed. Whether that variable is SOH that leaf spy is looking at is another question.
2018 Leaf SV Pearl White with Tech and All Weather, Purchased New on 5/3/19

DanCar
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Re: What's new for 2020?

Sun Oct 27, 2019 8:34 am

OrientExpress wrote:
Thu Oct 24, 2019 7:48 am
The 2018 and 2019 cars have a completely different battery chemistry that is much more durable and heat tolerant. As long as the average temp is between the 2nd blue and 1st red bar, the battery will be fine.

Image

Granted the current design has been going strong for almost 4 years now, (2 in hot weather testing at the Nissan Arizona proving ground) and two in the hands of customers, there is yet to be any negative reports on the durability of the new design.

The challenge is that most are still comparing the new battery's performance using the metrics from the earlier designs.
Thanks for the helpful info! :)
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LeftieBiker
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Re: What's new for 2020?

Sun Oct 27, 2019 1:50 pm

I hope that the above was sarcasm. OE posts, at best, Nissan marketing content. At worst, he makes things up. That battery temp graphic does not represent the actual safe zone for that battery, which should have the yellow beginning two thirds of the way over from the left, not 4/5ths.
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DougWantsALeaf
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Re: What's new for 2020?

Sun Oct 27, 2019 2:05 pm

Leftie

That’s what I thought a few months back, but after watching the Bjorn videos showing thermally managed batteries happily staying in the upper 40’s for durations, even low 50’s.. maybe the newer chemistries hold up better at higher temps.

Nothing to back that besides the you tube videos though.
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LeftieBiker
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Re: What's new for 2020?

Sun Oct 27, 2019 3:47 pm

That’s what I thought a few months back, but after watching the Bjorn videos showing thermally managed batteries happily staying in the upper 40’s for durations, even low 50’s.. maybe the newer chemistries hold up better at higher temps.


None of those thermally controlled batteries are Nissan's, obviously. We know that the Leaf 40kwh packs don't do well at sustained high temps, which is why Nissan throttles back charging. We know that the 40kwh pack is slow to cool, so I think that what I wrote about Nissan putting the "yellow zone" in the wrong place on that graphic is perfectly valid. The current location is at about 9 or 10 temp bars - far too high.
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webeleafowners
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Re: What's new for 2020?

Sun Oct 27, 2019 5:26 pm

We are so freakin lucky. Our climate is very well suited to the leaf. This summer the hottest our battery ever got was seven bars on a hot day (33 degrees) and two fast charges. Other than that 6 was the highest and five was common. The last month or so it has never been above 4. :). My battery is going to last forever...and we are probably selling it next year. Lol. (Replacing it with the Eplus SL).
2015 Smart Electric Drive convertible.
2016 Nissan Leaf SV 30KWh
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LeftieBiker
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Re: What's new for 2020?

Sun Oct 27, 2019 7:03 pm

Does yours have the Premium Package?
Scarlet Ember 2018 Leaf SL W/ Pro Pilot
2009 Vectrix VX-1 W/18 Leaf modules, & 3 EZIP E-bicycles.
BAFX OBDII Dongle
PLEASE don't PM me with Leaf questions. Just post in the topic that seems most appropriate.

DougWantsALeaf
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Re: What's new for 2020?

Sun Oct 27, 2019 10:39 pm

We are also now back to 4 bar territory here in Chicago. Even my last trip with fast charge sessions and hard freeway driving (70+mph) never saw the battery above mid 80s (post fast charge and declined from there on the highway).

Only downside is that that cold thicker air cuts into your efficiency.
2019 SV Plus Silver
2013 Leaf SV
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Max distance on 13 Leaf: 120 miles
Max distance on 19 Leaf: 242 Highway 4.5 miles/kWh (4.9 KWh remaining)

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