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Marktm
Gold Member
Posts: 518
Joined: Thu Jan 21, 2016 10:49 am
Delivery Date: 09 Jan 2016
Leaf Number: 022737
Location: Houston, TX

"Lizard" battery stats - hot climate

Sun Jun 30, 2019 11:32 am

Thought I'd post the latest amp-hour chart for my 2012 Leaf, with the hope that others that have similar data can compare based on similarities/dissimilarities. The data is based on a new replacement battery installed in November of 2016.
- Mostly commuter/in town use with occasional highway trips to the City (Houston). Most average speeds around 20 - 30mph
- Garage kept almost all the time. A few occasions of parking in full sun on hot pavement
- Houston, TX climate. Battery temps range between the 60's to high 90's
- Not sure I've QC's even once with the replacement battery - use home 240 VAC charger (~16 amps)
- Beginning mileage - 29,760; Last mileage - 44,069

Actually surprised how consistent the curve varies winter to summer. Hoping that the "winter drop" is not so pronounced this year - we'll see.





Battery log 6.30.19.jpg
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2012 Leaf SL; 43,000 miles. Battery replaced November 1st, 2016.

SageBrush
Posts: 4907
Joined: Sun Mar 06, 2011 2:28 am
Delivery Date: 13 Feb 2017
Location: NM

Re: "Lizard" battery stats - hot climate

Sun Jun 30, 2019 2:48 pm

ouch
2013 LEAF 'S' Model with QC & rear-view camera
Bought off-lease Jan 2017 from N. California
Two years in Colorado, now in NM
03/2018: 58 Ahr, 28k miles
11/2018: 56.16 Ahr, 30k miles
-----
2018 Tesla Model 3 LR, Delivered 6/2018

A4stewart
Posts: 2
Joined: Fri Dec 30, 2016 4:28 pm
Delivery Date: 30 Dec 2016

Re: "Lizard" battery stats - hot climate

Mon Jul 01, 2019 12:32 pm

I bought a 2013 Leaf SV without the quick charger option two years ago. It was a "cool climate" Leaf from Tacoma Washington and now Vancouver BC. It has a lizard battery, one of the first of the modified chemistry from April 2013 manufacture date. It is now showing 90.5% of original capacity with 59 amp hours after all this time according to Leafspy. It has 68,047 kms. on the odometer. Charging has been done mostly with Level 2 home charger, and charged to 100%.

Overall pretty happy with the low amount of degradation.

cwerdna
Posts: 9801
Joined: Fri Jun 03, 2011 4:31 pm
Delivery Date: 28 Jul 2013
Location: SF Bay Area, CA

Re: "Lizard" battery stats - hot climate

Mon Jul 01, 2019 1:08 pm

A4stewart wrote:I bought a 2013 Leaf SV without the quick charger option two years ago. It was a "cool climate" Leaf from Tacoma Washington and now Vancouver BC. It has a lizard battery, one of the first of the modified chemistry from April 2013 manufacture date. It is now showing 90.5% of original capacity with 59 amp hours after all this time according to Leafspy. It has 68,047 kms. on the odometer. .
"Lizard" pack didn't exist in 2013 in customer's hands. If it's the original pack from an April 2013 build, you don't have the lizard pack.

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

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

LeftieBiker
Moderator
Posts: 13419
Joined: Wed May 22, 2013 3:17 am
Delivery Date: 30 Apr 2018
Location: Upstate New York, US

Re: "Lizard" battery stats - hot climate

Mon Jul 01, 2019 1:53 pm

cwerdna wrote:
A4stewart wrote:I bought a 2013 Leaf SV without the quick charger option two years ago. It was a "cool climate" Leaf from Tacoma Washington and now Vancouver BC. It has a lizard battery, one of the first of the modified chemistry from April 2013 manufacture date. It is now showing 90.5% of original capacity with 59 amp hours after all this time according to Leafspy. It has 68,047 kms. on the odometer. .
"Lizard" pack didn't exist in 2013 in customer's hands. If it's the original pack from an April 2013 build, you don't have the lizard pack.
Cwerdna is correct. The improved chemistry that was used starting in 4/2013, and nicknamed the "Wolf Pack" by me, isn't quite as heat resistant as the Lizard pack, although it performs very close to it in other respects. The Lizard Pack was introduced for the 2015 model year.
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.

cwerdna
Posts: 9801
Joined: Fri Jun 03, 2011 4:31 pm
Delivery Date: 28 Jul 2013
Location: SF Bay Area, CA

Re: "Lizard" battery stats - hot climate

Mon Jul 01, 2019 2:07 pm

For reference, A4stewart can look at these:
https://mynissanleaf.com/viewtopic.php? ... ng#p320754
viewtopic.php?t=17168 - search for lizard

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

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

GerryAZ
Gold Member
Posts: 2289
Joined: Mon Nov 22, 2010 6:47 pm
Delivery Date: 12 Jun 2011
Location: Phoenix, AZ

Re: "Lizard" battery stats - hot climate

Mon Jul 01, 2019 5:55 pm

I suppose I should contribute to this thread. I saw gradual capacity loss until about 10 months ago (well over 60,000 miles),. Now there appear to be several weak cell pairs getting progressively weaker (based upon Leaf Spy data) which are limiting the energy storage capability of the full battery pack, and thus limiting usable range. The weak cells reach minimum voltage and cause turtle followed by shutdown even though there is a lot of energy left in the remaining cells. The weak cells reach maximum voltage while charging before the other cells so they also limit maximum charge of the pack.

The internal resistance also appears to be increasing over time and that is causing the battery temperature to be significantly higher this summer than during the previous 4 summers. In the past, the battery temperature would gradually cool off during highway driving after a DCQC, but now the temperature increases while driving on the highway. The odometer currently indicates 80813 miles while the car is charging at a DCQC station since I can no longer make my round trip commute without charging. The higher internal resistance and weak cells also limit regeneration and cause slower charging on DCQC.
Gerry
Silver LEAF 2011 SL rear ended (totaled) by in-attentive driver 1/4/2015 at 50,422 miles
Silver LEAF 2015 SL purchased 2/7/2015; traded 8/10/2019 at 82,436 miles
White LEAF 2019 SL+ purchased 8/10/2019

91040
Posts: 1010
Joined: Fri Mar 11, 2011 10:36 pm
Delivery Date: 06 May 2011
Location: Los Angeles, CA

Re: "Lizard" battery stats - hot climate

Mon Jul 01, 2019 11:14 pm

The degradation slope of my traction battery is quite smooth when compared to Marktm’s, even when plotted monthly. I live in the San Fernando Valley area of Los Angeles. The battery has ~70k miles on it.

9/28/15 61.14Ahr
10/1/16 62.36 Ahr
10/1/17 57.02 Ahr
10/1/18 54.17 Ahr
7/1/19 51.87 Ahr

Edit: Rescaled the monthly Ahr readings on my chart to match Marktm’s. The slope now resembles his chart more but is still slightly smoother.
Last edited by 91040 on Tue Jul 02, 2019 11:40 am, edited 2 times in total.
1st Capacity Bar loss 30k mi 16.25mo
2nd- 49k mi 25.5mo 51.5Ah
3rd- 73k mi 36.5mo 46.9Ah
4th- 86.5k mi 43mo 42.61Ah
5th- 101k mi 50.5mo 38.38Ah, end 36.13Ah
New Battery 9/28/15 104k mi 66.14Ah
1st- 160.5k mi 34mo 54.02Ah

LeftieBiker
Moderator
Posts: 13419
Joined: Wed May 22, 2013 3:17 am
Delivery Date: 30 Apr 2018
Location: Upstate New York, US

Re: "Lizard" battery stats - hot climate

Mon Jul 01, 2019 11:21 pm

Maybe there is less variation in day to day and time of day temperatures in the LA Basin than in Phoenix?
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.

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Stanton
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Posts: 2151
Joined: Thu Feb 03, 2011 10:56 am
Delivery Date: 01 Sep 2011
Leaf Number: 7458
Location: Plano, TX
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Re: "Lizard" battery stats - hot climate

Tue Jul 02, 2019 8:08 am

91040 wrote:The degradation slope of my traction battery is quite smooth when compared to Marktm’s, even when plotted monthly. I live in the San Fernando Valley area of Los Angeles. The battery has ~70k miles on it.

9/28/15 61.14Ahr
10/1/16 62.36 Ahr
10/1/17 57.02 Ahr
10/1/18 54.17 Ahr
7/1/19 51.87 Ahr
I have driven about half as many miles (~35,000) in approximately the same time (battery replaced in December 2015) with similar results (~52.1 AHr). I can definitely say my Lizard battery has performed better than the original; even if I hit 2 bars by the end of this year, I lost 4 bars over the same time period with the original battery.
2011 Blue Ocean SV w/floor mats & window tint
12v LiFePO4 battery & FIAMM 74100 horns
Wet Okole seat covers (front)
Tor's low-power heater mod
2013 sun visor
3G modem upgrade
L2 EVSE Upgrade
Battery Pack replaced (Rev E) @51 months and 41k miles

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