coupedncal
Posts: 16
Joined: Mon Nov 13, 2017 11:11 pm
Delivery Date: 06 Aug 2017
Leaf Number: 309668

Long Term Reliability of the 30kWh Battery Pack

Tue Jun 12, 2018 2:34 pm

It has been couple of years since the 30kWh battery packs were released. I was wondering what the consensus on battery degradation is of these battery packs. I have seen various references to this 30 kWh packs being less durable than the lizard packs. My friend has a 50K miles lizard pack on his '15 and he is running with 12 bars and he charges to 100% every single time. Sometimes twice a day due to his commute needs. Any ideas how the '16 and '17 will behave over the next 5-10 years? Is there empirical data to suggest these newer packs are prone to early degradation?
'17 30kWh Leaf

LeftieBiker
Posts: 9835
Joined: Wed May 22, 2013 3:17 am
Delivery Date: 30 Apr 2018
Location: Upstate New York, US

Re: Long Term Reliability of the 30kWh Battery Pack

Tue Jun 12, 2018 2:58 pm

There are several topics on this here. The short answer is that they have terrible degradation and average reliability.

http://www.mynissanleaf.com/viewtopic.php?f=44&t=20924
Scarlet Ember 2018 Leaf SL W/ Pro Pilot
2009 Vectrix VX-1 W/18 Leaf modules, & 3 EZIP E-bicycles.
PLEASE don't PM me with Leaf questions. Just post in the topic that seems most appropriate.

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LTLFTcomposite
Posts: 4563
Joined: Fri Apr 23, 2010 6:06 pm
Delivery Date: 10 Dec 2011
Leaf Number: 5926
Location: Central FL

Re: Long Term Reliability of the 30kWh Battery Pack

Tue Jun 12, 2018 4:10 pm

Is this one of those world's shortest books jokes?
LTL
White 2012 SV delivered 10 Dec 2011 returned 25 Nov 2014 replaced with stopgap ICE Sentra
[35 months] [35K miles] [9 Bars]
2013 Volt replaced after 36 months/30k miles with ICE Rogue
2016 SV-adjacent May 2016 lost 4th bar March 2018

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jlv
Posts: 877
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Delivery Date: 30 Apr 2014
Leaf Number: 424487
Location: Massachusetts

Re: Long Term Reliability of the 30kWh Battery Pack

Wed Jun 13, 2018 8:41 am

coupedncal wrote:Any ideas how the '16 and '17 will behave over the next 5-10 years? Is there empirical data to suggest these newer packs are prone to early degradation?

LTLFTcomposite's sig says it all:
"2016 SV-adjacent May 2016 lost 4th bar March 2018"
LEAF '13 SL+Prem (mfg 12/13, leased 4/14, bought 5/17, sold 11/18) 34K mi, AHr 58, SOH 87%
Tesla S 75D (3/17) 29K mi
Tesla X 100D (ordered, 12/18 delivery) (replaced 3 reservation)

estomax
Posts: 184
Joined: Fri Jan 20, 2017 9:23 pm
Delivery Date: 21 Jan 2017
Leaf Number: 424033
Location: Seattle

Re: Long Term Reliability of the 30kWh Battery Pack

Wed Jun 13, 2018 10:56 am

a graph from a new zealand study here also:
https://flipthefleet.org/2018/30-kwh-leafs-soh-loss/

30kwh appear to degrade a lot quicker than 24kwh battery packs.
2013 Leaf SL Premium
27k, 93% SoH 2/17 32k, 96% SoH 6/17
46k, 94% SoH 2/18 52k, 88% SoH 6/18

Dooglas
Posts: 230
Joined: Thu Apr 03, 2014 10:08 pm
Delivery Date: 04 Jan 2017
Leaf Number: 314779
Location: Oregon City, OR

Re: Long Term Reliability of the 30kWh Battery Pack

Wed Jun 13, 2018 3:47 pm

I've only got a sample of one on my '16 S30. Having said, I have had it for almost 2 years now and it's performance in terms of reliability and degradation has been comparable to the '13 SV24 it replaced. Yes, I live in an EV friendly place, and I seldom QC - so the car lives an easy life. My single data point does not support the rapid degradation claim, but long term reliability will obviously require a longer time line of data than exists right now.
2013 Leaf SV - lease ended, 2016 Leaf S30

Dooglas
Posts: 230
Joined: Thu Apr 03, 2014 10:08 pm
Delivery Date: 04 Jan 2017
Leaf Number: 314779
Location: Oregon City, OR

Re: Long Term Reliability of the 30kWh Battery Pack

Wed Jun 13, 2018 3:55 pm

estomax wrote:a graph from a new zealand study here also:
https://flipthefleet.org/2018/30-kwh-leafs-soh-loss/

If the above relationship is correct, all 30kWh batteries will be replaced by Nissan inside of their warranty period.
2013 Leaf SV - lease ended, 2016 Leaf S30

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OrientExpress
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Delivery Date: 10 May 2011
Leaf Number: 2331
Location: San Jose, Ca

Re: Long Term Reliability of the 30kWh Battery Pack

Wed Jun 13, 2018 4:57 pm

On June 6, 2018 Nissan began conducting a customer service campaign in North America to reprogram the lithium-ion battery controller in 2016 and 2017 model-year LEAF vehicles equipped with a 30 kWh battery, to correct the calculation used for the battery capacity level gauge and distance remaining of the vehicle.

The displayed vehicle range and battery capacity level gauge on these vehicles is displaying range and capacity that is lower than the actual amount. Reprogramming the controller will result in an accurate display of the LEAFs battery capacity and trip range.

In most cases the 30 kWh battery has been just fine, but in other cases the battery controller was providing inaccurate calculated data that falsely indicated that the battery was degrading at an accelerated rate. Some cars were reporting losing as much as 25% of their capacity and range at 15,000 miles. Nissan has been replacing those batteries with new ones while they investigated the issue to find the root cause.

Since everything from the display of range and SOC is based on these faulty calculations, everything indicated that the battery was going bad fast. Nissan indicated that they knew something was wrong, that these batteries should not be going south as fast as they indicated, and analysis showed that indeed that in some situations the BMC was providing incorrect data.

Every owner of a 2016 or 2017 LEAF should contact their local dealer to get this fix applied to their vehicles, even if they have had their battery already replaced.
2018 LEAF SL
Gun Metalic
Delivery April 10 2018

Prior LEAF:
2014 LEAF SV
Ocean Blue
Delivery May 23 2014
50,000+ miles - all 12 bars - Same range as new - No warranty issues ever!

edatoakrun
Posts: 5222
Joined: Thu Nov 11, 2010 9:33 am
Delivery Date: 15 May 2011
Leaf Number: 2184
Location: Shasta County, North California

Re: Long Term Reliability of the 30kWh Battery Pack

Wed Jun 13, 2018 5:41 pm

OrientExpress wrote:On June 6, 2018 Nissan began conducting a customer service campaign in North America to reprogram the lithium-ion battery controller in 2016 and 2017 model-year LEAF vehicles equipped with a 30 kWh battery, to correct the calculation used for the battery capacity level gauge and distance remaining of the vehicle...

No official notice from Nissan?

Why not?
no condition is permanent

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OrientExpress
Forum Supporter
Posts: 1225
Joined: Sun Aug 08, 2010 12:22 pm
Delivery Date: 10 May 2011
Leaf Number: 2331
Location: San Jose, Ca

Re: Long Term Reliability of the 30kWh Battery Pack

Wed Jun 13, 2018 5:45 pm

The official notice is going out to all owners as we speak. The dealers are aware of it, and you can make an appointment to get it done today.
2018 LEAF SL
Gun Metalic
Delivery April 10 2018

Prior LEAF:
2014 LEAF SV
Ocean Blue
Delivery May 23 2014
50,000+ miles - all 12 bars - Same range as new - No warranty issues ever!

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