Silverfish
Posts: 29
Joined: Thu Jun 21, 2018 10:32 am
Delivery Date: 21 Jun 2018

Re: RIP, 11th bar

Mon Jul 30, 2018 8:15 pm

LeftieBiker wrote:Hopefully the almost 1% loss of SOH per month I'm seeing, despite my cooled garage, is just another BMS "error."


You and me both.

Dooglas
Posts: 229
Joined: Thu Apr 03, 2014 10:08 pm
Delivery Date: 04 Jan 2017
Leaf Number: 314779
Location: Oregon City, OR

Re: RIP, 11th bar

Fri Aug 03, 2018 8:48 pm

alozzy wrote: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.

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.
2013 Leaf SV - lease ended, 2016 Leaf S30

SageBrush
Posts: 2910
Joined: Sun Mar 06, 2011 2:28 am
Delivery Date: 13 Feb 2017
Location: Colorado

Re: RIP, 11th bar

Fri Aug 03, 2018 9:36 pm

Dooglas wrote: it has been interesting to see Nissan move forward with corrections in 30 kWh BMS programming and independent analysis confirming the anticipated result.
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.

I'm sure there was a huge collective sigh of relief when they realized it was a software correctable issue. The people who bought 30 kWh LEAFs with tax credits and the $10k NIssan discount got killer deals.
Last edited by SageBrush on Sat Aug 04, 2018 12:27 am, edited 1 time in total.
2013 LEAF 'S' Model with QC & rear-view camera
Bought off-lease Jan 2017 from N. California
Car is now enjoying an easy life in Colorado
03/2018: 58 Ahr, 28k miles
11/2018: 56.16 Ahr, 30k miles
-----
2018 Tesla Model 3 LR, Delivered 6/2018

LeftieBiker
Posts: 9798
Joined: Wed May 22, 2013 3:17 am
Delivery Date: 30 Apr 2018
Location: Upstate New York, US

Re: RIP, 11th bar

Fri Aug 03, 2018 11:13 pm

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.


They increased the energy density by 25%.
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.

Dooglas
Posts: 229
Joined: Thu Apr 03, 2014 10:08 pm
Delivery Date: 04 Jan 2017
Leaf Number: 314779
Location: Oregon City, OR

Re: RIP, 11th bar

Sat Aug 11, 2018 9:55 pm

LeftieBiker wrote:They increased the energy density by 25%.

As has basically every other manufacturer. You were expecting a dramatic increase in battery degradation from everyone who increased energy density of the pack?
2013 Leaf SV - lease ended, 2016 Leaf S30

LeftieBiker
Posts: 9798
Joined: Wed May 22, 2013 3:17 am
Delivery Date: 30 Apr 2018
Location: Upstate New York, US

Re: RIP, 11th bar

Sat Aug 11, 2018 10:30 pm

Dooglas wrote:
LeftieBiker wrote:They increased the energy density by 25%.

As has basically every other manufacturer. You were expecting a dramatic increase in battery degradation from everyone who increased energy density of the pack?


With no TMS? It wouldn't surprise me. Hyundai/Kia is also seeing increased degradation with no real TMS.
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.

hmmwv
Posts: 99
Joined: Wed Jun 10, 2015 8:27 am
Location: Seattle, WA

Re: 2013-2014 bar losers and capacity losses

Mon Aug 20, 2018 11:30 am

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.
2013 LEAF SL w/Premium Pkg, Brilliant Silver, 55,244 miles, LeafSpy: 50.17 AHr, SOH 76%, Hx70.30% as of 11/05/2018, 10 bars, 28 QC, 2129 L2/L2

mmmike
Posts: 14
Joined: Tue Jan 03, 2017 10:29 pm
Delivery Date: 05 Nov 2017
Leaf Number: 407184

Re: 2013-2014 bar losers and capacity losses

Thu Sep 27, 2018 6:40 am

hmmwv wrote: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.


@hmmwv You are right this summer was brutal (we hit 114 degrees here - highest ever) But interestingly it did not seem to effect my battery stats. My 10 bar 04/2013 is now at 48.5 AHr but ever since I purchased it the amount of loss per month has slightly decreased. When I first got it (May 2017) it was dropping .22 AHr per month and the latest reading shows .033 AHr per month. Not sure if this really means anything but so far the car meets my needs. I think I am past the point where I could ever get my battery replaced under warranty so I am hoping this trend continues for me.

Mike
2013 SV 36k 10bars - 48.6 aHr
Charging - Maxx-16 3.8kw exclusively
Central Texas

cwerdna
Posts: 8396
Joined: Fri Jun 03, 2011 4:31 pm
Delivery Date: 28 Jul 2013
Location: SF Bay Area, CA

Re: 2013-2014 bar losers and capacity losses

Sun Oct 07, 2018 3:53 am

https://www.facebook.com/groups/nissan. ... 265224269/ 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.

'13 Leaf SV w/premium package (owned)
'13 Leaf SV w/QC + LED & premium packages (lease over, car returned)
'06 Prius

Please don't PM me with Leaf questions. Just post in the topic that seems most appropriate.

SageBrush
Posts: 2910
Joined: Sun Mar 06, 2011 2:28 am
Delivery Date: 13 Feb 2017
Location: Colorado

Re: 2013-2014 bar losers and capacity losses

Sun Oct 07, 2018 9:20 am

cwerdna wrote: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.

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.

My car was built in 10/2013 and put in service 04/2014. It also still has 12 bars (although not for long according to LeafSpy.)
2013 LEAF 'S' Model with QC & rear-view camera
Bought off-lease Jan 2017 from N. California
Car is now enjoying an easy life in Colorado
03/2018: 58 Ahr, 28k miles
11/2018: 56.16 Ahr, 30k miles
-----
2018 Tesla Model 3 LR, Delivered 6/2018

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