LeftieBiker
Moderator
Posts: 12811
Joined: Wed May 22, 2013 3:17 am
Delivery Date: 30 Apr 2018
Location: Upstate New York, US

Re: The 40KWH Battery Topic

Fri May 31, 2019 7:36 pm

Never got to red temp bar though.


The Red Zone should thought of as the point at which the battery is already cooking and you'd damned well better do something. It's the steaming radiator of battery indications. I consider anything passed the 2/3 point on that silly bar gauge the danger threshold for longevity. Think of it as the "Yellow Zone."
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.

DaveinOlyWA
Posts: 14047
Joined: Sat Apr 24, 2010 7:43 pm
Delivery Date: 16 Feb 2018
Leaf Number: 314199
Location: Olympia, WA
Contact: Website

Re: The 40KWH Battery Topic

Fri May 31, 2019 10:45 pm

LeftieBiker wrote:
Never got to red temp bar though.


The Red Zone should thought of as the point at which the battery is already cooking and you'd damned well better do something. It's the steaming radiator of battery indications. I consider anything passed the 2/3 point on that silly bar gauge the danger threshold for longevity. Think of it as the "Yellow Zone."
+1. The red bar is like the idiot lights back in the day. If the light came on, it was already too late
2011 SL; 44,598 miles. 2013 S; 44,840 miles.2016 S30 deceased. 29,413 miles. 2018 S40; 15,000 miles, 478 GIDs, 37.0 kwh 109.81 Ahr , SOH 94.61, Hx 120.15
My Blog; http://daveinolywa.blogspot.com" onclick="window.open(this.href);return false;

rogersleaf
Posts: 266
Joined: Sun May 18, 2014 7:50 pm
Delivery Date: 22 Mar 2019
Leaf Number: 307726
Location: Kent, Ohio

Re: The 40KWH Battery Topic

Sat Jun 01, 2019 6:40 am

Mine passed the 5000 mile mark yesterday, 10 weeks of ownership.

LS stats:
AHr... 113.65
SOH... 98.45%
Hx... 115.83%
SOC... 99.2% and 498 GID
403.61v, cells balanced between 4.202-4.206v
odo... 5009
5 QC / 147 L2’s

Should add that L2’s are typically done overnight with charge timers set to not fully charge before I leave in the morning. The car rarely sits on full charge and have yet to reach LBW.
2014 SV - Brilliant Silver - returned 1/2017 at end of lease.
2019 SL - White - w/Tech Package

Kieran973
Posts: 95
Joined: Tue Jun 19, 2018 6:51 pm
Delivery Date: 30 Apr 2019
Location: near NY, NY

Re: The 40KWH Battery Topic

Sat Jun 01, 2019 4:39 pm

Here is a LS update on my 40 kWh SV. I seem to have lost almost 2% SOH in 10 days with no QC's, L2 charging mostly between 25%-65%, sometimes to 80%, and only once to 100% (right before my first ever 400-mile, one-overnight round trip drive in this car, on which I will report back in a later post). Should I be concerned? An actual 2% drop in capacity in only 10 days doesn't really seem possible, and I know LS's SOH can be off by as much as 3%. I'm hoping the real state of health of the battery is over 99%, because a 97.4% SOH on a one month old car with just over 1,000 miles is not good.

Purchase date: 4/30/19. Build date: 02/2019.

First Leaf Spy reading: 5/15/19

Odometer: 664 miles
AHr: 114.9
SOH: 99.35%
Hx: 101.31%
GIDS: 196
SOC: 38.8% (the dash SOC says 30%)
Remain: 15.2 kWh


Second Leaf Spy reading: 5/25/19

Odometer: 1144 miles
AHr: 112.44
SOH: 97.40%
Hx: 105.68%
GIDS: 490
SOC: 98.6% (the dash SOC says 100%)
Remain: 38.0 kWh
2019 Leaf SV (silver) with All-Weather Package

LeftieBiker
Moderator
Posts: 12811
Joined: Wed May 22, 2013 3:17 am
Delivery Date: 30 Apr 2018
Location: Upstate New York, US

Re: The 40KWH Battery Topic

Sat Jun 01, 2019 4:42 pm

I don't think we yet know enough about the new BMS to worry about the SOH from a single reading. My car seemed to be on track for about 8% loss the first year, but only ended up with about half that.
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.

SageBrush
Posts: 4609
Joined: Sun Mar 06, 2011 2:28 am
Delivery Date: 13 Feb 2017
Location: NM

Re: The 40KWH Battery Topic

Sat Jun 01, 2019 9:34 pm

Kieran973 wrote:Should I be concerned?
Inadequate data and time to conclude anything. A year will be interesting and the second year informative. It takes that long because Li-x batteries often have an early loss of range of up to 5% that then tapers off to a long-term degradation rate.
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

jdcbomb
Posts: 192
Joined: Tue May 19, 2015 12:17 pm
Delivery Date: 18 May 2015

Re: The 40KWH Battery Topic

Sun Jun 02, 2019 10:49 am

I happened to monitor a least a few of the QC sessions. I mostly only did them at night or early morning and never during the middle of the day. The temps in there briefly in one or two sessions did get to 110 F but other sessions saw it peak at around 100 F max.

Given that it appears the SOH readings on LS may be up to 3 pct off, it seems tracking it this closely might be waste time, compared to just checking in every 6 months or so.

Max range on a warm (80 F) day if fully charged still showing around 170 mi+
lorenfb wrote:
jdcbomb wrote:40 kWh Battery LS Update:

Ahr: 110.9
SOH: 95.45
Hx:113.79
Odo: 7300 mi
QCs: 68
L2:178

Seemed to have dropped an entire SOH pct in the last 30 days with very hot weather (95+ for a week straight). QC once a day or less. Never got to red temp bar though.
Doesn't need to get there to be problematic, even frequent 110-115 F is to be avoided. Get LeafSpy to measure your temps after a QC.
2018 Leaf SV - In Service 2019 January - Location: Raleigh, NC.
2013 Leaf SL - Original In Service 2013 February - Bar Losses: 2016.10.17 - 25,843 Miles -- 2017.06.23 - 32,080 Miles -- 2018.04.10 - 37,000 Miles -- 4th: 2018.09.23 - 44,255 Miles

danrjones
Posts: 274
Joined: Wed Apr 17, 2019 8:02 am
Delivery Date: 17 Jun 2019
Location: Ridgecrest, CA

Re: The 40KWH Battery Topic

Thu Jun 06, 2019 3:53 pm

Figured it was a good time for an update since someone else asked for another thread, and I looked up my stats.

I have now had my leaf for 1 month and ~ 600 miles.

I am currently at 112.53 AHr and 97.48% SOH and 100.42% Hx with 3 QC and 37 L1/L2

Note that my car had sat for a year at a dealer and started at SOH of 97.63%

I think its too early to draw any conclusions on trends because the hot weather is just starting. But so far its a 2% per year drop. I expect that to accelerate the next few months then trend back down come fall and winter.
2018 Leaf SV Pearl White with Tech and All Weather, Purchased New on 5/3/19

danrjones
Posts: 274
Joined: Wed Apr 17, 2019 8:02 am
Delivery Date: 17 Jun 2019
Location: Ridgecrest, CA

Re: The 40KWH Battery Topic

Thu Jun 06, 2019 3:57 pm

As a side note, I have never charged the car above 85%. I've been keeping it between about 45% and 80% normally. Should I charge it to 100% once just to see the data?
2018 Leaf SV Pearl White with Tech and All Weather, Purchased New on 5/3/19

LeftieBiker
Moderator
Posts: 12811
Joined: Wed May 22, 2013 3:17 am
Delivery Date: 30 Apr 2018
Location: Upstate New York, US

Re: The 40KWH Battery Topic

Thu Jun 06, 2019 4:38 pm

Unless you have big range needs or have a real hankering to see the 100% data, I wouldn't bother. The time will likely come when you need to do it for a trip anyway.
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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