rogersleaf
Posts: 376
Joined: Sun May 18, 2014 7:50 pm
Delivery Date: 22 Mar 2019
Leaf Number: 307726
Location: Kent, Ohio

Re: The 40KWH Battery Topic

rogersleaf wrote: Sat Dec 11, 2021 5:30 am
rogersleaf wrote: Sun Sep 19, 2021 4:25 pm
rogersleaf wrote: Sat Jun 26, 2021 12:18 pm
Passing 45,000 miles now... Almost no change since the last reading (SOH actually went up slightly, gained a GID)

LS stats:
AHr... 104.83
SOH... 90.81%
Hx... 105.52%
SOC... 97.0% and 449 GID
403.89v, cells balanced between 4.206-4.209v
odo... 45,159
25 QC / 1124 L2’s
Turning 50,000 miles. Battery looks very stable over the past 10K miles

LS stats:
AHr... 104.51
SOH... 90.53%
Hx... 100.03%
SOC... 98.5% and 455 GID
403.90v, cells balanced between 4.206-4.209v
odo... 50,110
27 QC / 1230 L2’s
Turning 55,000 miles. Slight decline

LS stats:
AHr... 103.38
SOH... 89.55%
Hx... 101.59%
SOC... 98.2% and 449 GID
403.42v, cells balanced between 4.201-4.204v
odo... 54,956
33 QC / 1346 L2’s
Reached the 3-year anniversary and 60,000 miles.
I held this back a couple weeks while the dealer did some diagnostic testing during their annual check.
In early Feb '22, experienced a sudden drop in SOC while battery was relatively cold and SOC was @ 25%.
They were not able to reproduce the problem (despite cold soaking the car for 2 days @ 20F).
They did fix the "click" in the front axle by performing the Service Bulletin for dry hub/axle splines and retorque the axle nuts.

LS stats:
AHr... 103.21
SOH... 89.41%
Hx... 104.43%
SOC... 98.4% and 449 GID
409.90v, cells balanced between 4.195-4.199v
odo... 60,226
41 QC / 1477 L2’s
2014 SV - Brilliant Silver - returned 1/2017 at end of lease.
2019 SL - White - w/Tech Package
User avatar
Stanton
Posts: 2621
Joined: Thu Feb 03, 2011 10:56 am
Delivery Date: 01 Sep 2011
Leaf Number: 7458
Location: Plano, TX
Contact: Website Twitter

Re: The 40KWH Battery Topic

rogersleaf wrote: Sun Mar 27, 2022 5:26 pm Reached the 3-year anniversary and 60,000 miles.
I held this back a couple weeks while the dealer did some diagnostic testing during their annual check.
In early Feb '22, experienced a sudden drop in SOC while battery was relatively cold and SOC was @ 25%.
They were not able to reproduce the problem (despite cold soaking the car for 2 days @ 20F).
Would like to know what "relatively cold" is, as definitely means different things to different parts of the country.
Otherwise I'd say your stats look pretty good for a pack with 60k miles on it. I think we have to acknowledge the fact that all battery packs are susceptible to an isolated "power drain" at low SoC...depending on the exact circumstances (and it would be interesting to know what those were as well--besides temperature).
2011 Blue Ocean SV w/OVMS
12v LiFePO4 battery
FIAMM 74100 horns/Wet Okole seat covers/Tor's heater mod/Dala's CAN-bridge
Lizard Pack (Rev E) installed @51 months/41k miles
40 kWh Pack (Gen2) installed @115 months/84k miles
rogersleaf
Posts: 376
Joined: Sun May 18, 2014 7:50 pm
Delivery Date: 22 Mar 2019
Leaf Number: 307726
Location: Kent, Ohio

Re: The 40KWH Battery Topic

Stanton wrote: Mon Mar 28, 2022 6:21 am
rogersleaf wrote: Sun Mar 27, 2022 5:26 pm Reached the 3-year anniversary and 60,000 miles.
I held this back a couple weeks while the dealer did some diagnostic testing during their annual check.
In early Feb '22, experienced a sudden drop in SOC while battery was relatively cold and SOC was @ 25%.
They were not able to reproduce the problem (despite cold soaking the car for 2 days @ 20F).
Would like to know what "relatively cold" is, as definitely means different things to different parts of the country.
Otherwise I'd say your stats look pretty good for a pack with 60k miles on it. I think we have to acknowledge the fact that all battery packs are susceptible to an isolated "power drain" at low SoC...depending on the exact circumstances (and it would be interesting to know what those were as well--besides temperature).
At the time of the incident, I did not have leafspy running so don’t know cell temps exactly. I’m speculating likely in the low 30’s F based on the dashboard temp gauge reading 3 bars. The car had been parked outside and cold-soaked in 15-20F weather for @ 30 hours. Then driven at 65 mph expressway speeds in 20F weather at night into blowing snow & headwinds for about 25 minutes when SOC suddenly dropped from 25% to to flashing “—-“ in about 2 miles. Up to the time of the incident there was a normal consumption rate for the temp & weather conditions (~25 miles and 30% SOC consumed, typical for a 40KWh pack under Ohio winter conditions at expressway speeds). Then a SOC drop so sudden I couldn’t clear the low battery alarm fast enough before the next alarm chimed. Exiting the expressway and pegging the regen as hard as possible reset the SOC to @ 9% and the car behaved normally on surface streets the last few miles to reach home. Relatively obvious this car doesn’t like heavy power draw on a cold pack at lower SOC’s. Just another good argument for not buying an EV without an active thermal management system.
2014 SV - Brilliant Silver - returned 1/2017 at end of lease.
2019 SL - White - w/Tech Package
danrjones
Posts: 1388
Joined: Wed Apr 17, 2019 8:02 am
Delivery Date: 17 Jun 2019
Location: Ridgecrest, CA

Re: The 40KWH Battery Topic

danrjones wrote: Mon Mar 14, 2022 7:24 am I haven't updated since Jan 11th. Looks like I must have had an "adjustment" sometime the last week or two, and I (think) I am perilously close to loosing my first battery bar.

For REF on Mar 1st I was at at SOH 87.40

Yesterday:

SOH: 86.00
AmpHr: 99.28
Hx: 94.64
Miles: 13577
My stats as of yesterday:

SOH: 85.97%
AHr: 99.24
Hx:94.49
Miles: 13800


So when should I expect to loose the first battery bar? I must be getting close.
2018 Leaf SV Pearl White with Tech and All Weather, Purchased New on 5/3/19
danrjones
Posts: 1388
Joined: Wed Apr 17, 2019 8:02 am
Delivery Date: 17 Jun 2019
Location: Ridgecrest, CA

Re: The 40KWH Battery Topic

Nobody has an idea as to when you loose your first battery bar?

I thought it was supposed to be at 7.5% plus 7.5%, so 15% down?

What was it for the older packs?
2018 Leaf SV Pearl White with Tech and All Weather, Purchased New on 5/3/19
SageBrush
Posts: 7305
Joined: Sun Mar 06, 2011 2:28 am
Delivery Date: 13 Feb 2017
Location: NM

Re: The 40KWH Battery Topic

danrjones wrote: Fri Apr 08, 2022 9:52 am What was it for the older packs?
IIRC, 16.5% for bars #1 and #12, and the intervening 10 bars evenly split the remainder
2013 LEAF 'S' Model with QC & rear-view camera
Bought Jan 2017 from N. Cal
Two years in Colorado, now in NM
03/18: 58 Ahr @28k miles. 10/21: 53.4 Ahr @ 40k miles
-----
2018 Tesla Model 3 LR, Delivered 6/2018. Sold 11/2021, awaiting Tesla Model Y
LeftieBiker
Moderator
Posts: 18838
Joined: Wed May 22, 2013 3:17 am
Delivery Date: 30 Apr 2018
Location: Upstate New York, US

Re: The 40KWH Battery Topic

There was no hard figure for the 24kwh packs (it was between 84% and 85%), and the 40kwh packs seem to be holding on to 12 bars a bit longer than that. My guess is that a bar will drop when it hits 83%.
Brilliant Silver 2021 Leaf SV40 W/ Pro Pilot & Protection
2009 Vectrix VX-1 W/18 Leaf modules, & 2 lithium E-bicycles.
BAFX OBDII Dongle
PLEASE don't PM me with Leaf questions. Just post in the topic that seems most appropriate.
danrjones
Posts: 1388
Joined: Wed Apr 17, 2019 8:02 am
Delivery Date: 17 Jun 2019
Location: Ridgecrest, CA

Re: The 40KWH Battery Topic

LeftieBiker wrote: Fri Apr 08, 2022 10:23 am There was no hard figure for the 24kwh packs (it was between 84% and 85%), and the 40kwh packs seem to be holding on to 12 bars a bit longer than that. My guess is that a bar will drop when it hits 83%.
No worries, I'm not holding anyone here accountable, but I am trying to decide whether to sell it now or if it can get me through the summer w/o dropping that precious first bar. Sadly one of my local rebates ($4k) has run out until October, so I'd prefer to hold onto the Leaf until closer to that time.

Certainly is cheaper to drive the leaf than my f150. Free power versus $5.50 gas at 17 mpg.

I'm at just under 86% and its even possible my next 3 month will be a bump up not down. Maybe.
2018 Leaf SV Pearl White with Tech and All Weather, Purchased New on 5/3/19
User avatar
Stanton
Posts: 2621
Joined: Thu Feb 03, 2011 10:56 am
Delivery Date: 01 Sep 2011
Leaf Number: 7458
Location: Plano, TX
Contact: Website Twitter

Re: The 40KWH Battery Topic

danrjones wrote: Fri Apr 08, 2022 1:55 pm I'm at just under 86% and its even possible my next 3 month will be a bump up not down. Maybe.
Not a chance in the summer. Having said that, I don't see how 11 is so much worse than 12 (CB's)...especially if they do some sort of CAN bus reading (which they should unless they are clueless about EVs).
2011 Blue Ocean SV w/OVMS
12v LiFePO4 battery
FIAMM 74100 horns/Wet Okole seat covers/Tor's heater mod/Dala's CAN-bridge
Lizard Pack (Rev E) installed @51 months/41k miles
40 kWh Pack (Gen2) installed @115 months/84k miles
danrjones
Posts: 1388
Joined: Wed Apr 17, 2019 8:02 am
Delivery Date: 17 Jun 2019
Location: Ridgecrest, CA

Re: The 40KWH Battery Topic

Stanton wrote: Fri Apr 08, 2022 2:14 pm
danrjones wrote: Fri Apr 08, 2022 1:55 pm I'm at just under 86% and its even possible my next 3 month will be a bump up not down. Maybe.
Not a chance in the summer. Having said that, I don't see how 11 is so much worse than 12 (CB's)...especially if they do some sort of CAN bus reading (which they should unless they are clueless about EVs).
Given where I live I doubt I'll sell it to a private party. It will likely be sold to carmax or one of the online services. Or a trade in. I doubt most of those will do more than check the battery bar page, if they even do that.
2018 Leaf SV Pearl White with Tech and All Weather, Purchased New on 5/3/19

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