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I've just realised from the mileage and number of QC's shown above that I've done one rapid charge every 98ish miles! Which seems much more frequent than I realised.
This suggests that not only have I used the Leaf as a long distance car (not a commuter) which is true but that it has coped well over these last three years and the battery health has stood up to it. All despite not having an active thermal management system and though the temperature does rise dramatically after three charges it's never refused to rapid charge.
This goes against the perceived wisdom... hmmm.
While I would suggest you not take those LBC estimated of battery condition too seriously, I doubt that you really have to worry much about pack temperature in your climate.

As you can see, even the 2012 LEAFs put through a torture test of twice-daily discharges followed by immediate DC recharges to "100%" in the extremely hot climate of Phoenix Arizona, lost capacity rapidly only during those months with very high ambient temperatures:

https://avt.inl.gov/sites/default/files/pdf/vehiclebatteries/DCFC_Study_FactSheet_EOT.pdf

The full study:

https://avt.inl.gov/sites/default/files/pdf/vehiclebatteries/FastChargeEffects.pdf

You can heat up your pack with repeated DC charges, but you will probably not maintain the high temperatures for the long duration required to cause rapid capacity loss.

Further discussion here:

"Benefits of passive thermal management of battery packs

...review... the data from Vehicle/battery pack testing conducted on 2011-2015 vehicles by the AVTA, conducted in an extremely hot environment, Phoenix Arizona.

Vehicle Testing - Light Duty - All | Advanced Vehicle Testing Activity

What you will find is that passively cooled BEVs suffered rapid initial pack capacity loss in this climate, and so did those with ATM systems.

In fact, whatever a cost/benefit analysis of passive vs. ATM show today, the results will almost surely continue to shift to advantage passive designs in the future.

This is primarily because battery pack costs are expected to continue their rapid decline, and typical kWh costs likely will continue to increase in the future as the grid decarbonizes, by replacing cheap fossil fuel generation with more expensive renewable sources."

Benefits of passive thermal management of battery packs
 

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My battery is pretty trash. @16 SL 30 kWh purchased brand new May 2017, but the thing is since it's a 2016 it literally sat on the dealership lot for a year in the Texas heat accumulating less than 300 miles before I purchased it. I'm down to 10 bars of capacity now with a full charge going to 21.9 kWh.

AHr 61.41
SOH 77.27
373.53V
Hx 50.53%
32,790 miles
577 QC 408 L1/L2s

My QC is so high because I live in an apartment and the first year at my old apartment I had no access to L2 so I exclusively charged on QC and now I usually charge on L1 with my garage at my new apartment. My complex refuses to let me install a 240 outlet in the garage.

Anyone have an idea on an estimation on when I might be due for a battery replacement?
 

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Probably within your warranty period to be honest.
If it's cost effective I would go back to quick charging in the summer months to help drag it down more quickly and speed up the process to get it replaced under warranty.

From the Idaho document it would appear L1/2 charging is better long term in a warm climate than DC charging and the best way to look after your new battery when you get it.

Have you often been at the top and into the red for battery temperature?
 

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I've been right below the red or in the red more times than I can count during the summer months. My battery bakes in the sun when i'm at work and if I QC during the day then it easily gets right below it or in the red. All the talk of everyone saying the battery is great in the Leaf post Lizard chemistry has obviously never lived in a climate like AZ or TX with a Leaf lol.
 

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I've been right below the red or in the red more times than I can count during the summer months. My battery bakes in the sun when i'm at work and if I QC during the day then it easily gets right below it or in the red. All the talk of everyone saying the battery is great in the Leaf post Lizard chemistry has obviously never lived in a climate like AZ or TX with a Leaf lol.
Leaf batteries are ideal for UK climate. I don't think anyone here says that they are any good in hotter regions.
 

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Not necessarily on this site but I've seen plenty of people on the comments section of Leaf articles from Insideevs.com and electrek.com stating how their battery is doing amazing in those climates and they are above 90% SOH.

Does Nissan determine whether they will replace the battery based on the battery report card you get after the battery check up every 15k? My dealership tells me I need to lay off the QC saying that its causing my battery to die quicker (partially sure) but praises me for my acceleration and braking performance. Isn't it the whole purpose for us to be able to drive these cars like normal ICE cars instead of babying them and tending to their delicate battery needs instead of using it for what it was built for?
 

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I'm in that exact same boat actually. My round trip for work is all highway and is 52 miles a day and by the time I get home my range is blinking. As its been on and off again in the 20's here I've had to charge twice a day as the battery will be completely dead to --- at 40 miles.

I have 2 weak cells so now I know that even taking my car to Nissan wont have them doing crap for me.
 

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I'm in that exact same boat actually. My round trip for work is all highway and is 52 miles a day and by the time I get home my range is blinking. As its been on and off again in the 20's here I've had to charge twice a day as the battery will be completely dead to --- at 40 miles.

I have 2 weak cells so now I know that even taking my car to Nissan wont have them doing crap for me.
There you go
Permanent 40 - 60 mV cell diff in LeafSpy
 

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If your local dealer or one not far has a Nissan trained EV specialist they may be more use than most. By trained I mean one of the few who can replace duff cells. Even the UK only has a handful of them.
 

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I'm in that exact same boat actually. My round trip for work is all highway and is 52 miles a day and by the time I get home my range is blinking. As its been on and off again in the 20's here I've had to charge twice a day as the battery will be completely dead to --- at 40 miles.

I have 2 weak cells so now I know that even taking my car to Nissan wont have them doing crap for me.
You could do with a few modules replacement.. there is substantial number that are draining fast
 

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I'm in that exact same boat actually. My round trip for work is all highway and is 52 miles a day and by the time I get home my range is blinking. As its been on and off again in the 20's here I've had to charge twice a day as the battery will be completely dead to --- at 40 miles.

I have 2 weak cells so now I know that even taking my car to Nissan wont have them doing crap for me.
What's it like at 100% SOC??
 

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..I would go back to quick charging in the summer months to help drag it down more quickly and speed up the process to get it replaced under warranty...
You are suggesting that he make the effort to intentionally damage his ten bar battery, to accelerate its replacement with a nine bar battery, under the warranty?

...I have 2 weak cells so now I know that even taking my car to Nissan wont have them doing crap for me.
Have you tried?

If the LBC readings you posted are correct, you might have the (unusual) pack condition that Nissan has previously been willing and able to repair, by replacing the individual defective module(s).

I assume you got a decent discount to begin with, when you bought your year-old LEAF?
 

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You are suggesting that he make the effort to intentionally damage his ten bar battery, to accelerate its replacement with a nine bar battery, under the warranty?



Have you tried?

If the LBC readings you posted are correct, you would appear to have the (unusual) pack condition that Nissan has previously been willing and able to repair, by replacing individual defective cell(s).

I assume you got a decent discount to begin with, when you bought your year-old LEAF?
Nissan battery replacement is based on SoH.. running SoH below 75% is surer way of getting Nissan into fixing it than anything else.
 

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You are suggesting that he make the effort to intentionally damage his ten bar battery, to accelerate its replacement with a nine bar battery, under the warranty?

Have you tried?

If the LBC readings you posted are correct, you might have the (unusual) pack condition that Nissan has previously been willing and able to repair, by replacing the individual defective module(s).

I assume you got a decent discount to begin with, when you bought your year-old LEAF?
No effort really if it's part of the normal way it's being driven. I would have no qualms if they were refusing to replace failed cells that were now dragging my pack down to levels like that. In fact I'm sure mine isn't far off that mileage and similar charge stats and is much better.
 

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I did get a discount on my car of 10k since it was a new 16 when the 17's were out and the 18 was scheduled for being unveiled in the fall. I rolled over from my old car into this one which is why they did such a huge discount plus they REALLY wanted it off the lot. I'll take some screenshots when the pack is full, half charged, and close to dead again.

The screenshot was from Feb 27th showing the difference in cells. My total full capacity has already gone down more since I posted on Monday stating it was at 21.9 kWh to now as of this morning stating 21.2 kWh but yet for some reason my SOH went up a percent. Like I said my battery is trash and I don't really know what to do.

I HAVE complained about my battery losing capacity quickly with a different dealership, and the leaf service tech literally just told me that its because I QC too much and to stop because its bad for the battery. A counter argument to that is there is nothing in the manuals for my 16 stating that QC is bad for the car. It actually says in the manual "Quick charging is possible (even several times a day) if the battery temperature is not near the red zone. If the battery temperature reaches the red zone, in order to protect the battery, quick charging is not allowed and the power limitation mode will be triggered" as well as not using QC as a reason to deny battery servicing and replacement under coverage.
 

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Is it worth contacting different Nissan dealerships and seeing if they do something now? The way it is degrading it will need replacing before the warranty runs out and it must be very frustrating. If the car sat at a dealers for months that could have damaged the pack. The bms is supposed to control all the charging and slow it down if its getting too hot.

I've read, probably in this thread or links from this thread, where Nissan dealership staff have unofficially recommended trying to get the pack below the 70% point before the warranty expires. I doesn't sound like you will have the time issue, but it must be very frustrating, the battery is about the same usable size as a 24 pack now.
 

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This pack is half dead. Can only drive about 30 miles, stays on turtle mode pretty much all the time now. Rapid charging speed is rubbish too as you can see.

It's all down to battery temperature... keep your batteries with a low temperature all the time and avoid rapid charging more than once in 2 days maybe. Every rapid charging session raises the battery temperature with ~14°C.
Lack of thermal management creates a lot of issues in time.
This pack here is most affected within middle of biggest module stack the one at the rear.

It's a 30kwh pack if you're in doubt, first registered December 2015.
 

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This pack is half dead. Can only drive about 30 miles, stays on turtle mode pretty much all the time now. Rapid charging speed is rubbish too as you can see.

It's all down to battery temperature... keep your batteries with a low temperature all the time and avoid rapid charging more than once in 2 days maybe. Every rapid charging session raises the battery temperature with ~14°C.
Lack of thermal management creates a lot of issues in time.
This pack here is most affected within middle of biggest module stack the one at the rear.

It's a 30kwh pack if you're in doubt, first registered December 2015.
Have you had the BMS update?
 
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