LeftieBiker
Posts: 9598
Joined: Wed May 22, 2013 3:17 am
Delivery Date: 31 May 2013
Location: Upstate New York, US

Re: The 40KWH Battery Topic

Sat Aug 18, 2018 12:36 pm

I still have to update to fix the odometer issue. I think I have about 900 miles on the car, about 700 of them from me driving it.
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.

mdeekay
Posts: 1
Joined: Tue Sep 04, 2018 3:26 am
Delivery Date: 15 Mar 2018

Re: The 40KWH Battery Topic

Tue Sep 04, 2018 3:35 am

I also got 2 major drops in SOH on my 2018 Nissan Leaf within the last 6 months of ownership. I lost 2 percent in mai and another 1.5 percent in august. I am living in norway and the car was parked in a garage when the drops happened. So heat can't be an issue.
My leaf has driven 15000km so far and got only one QC during the last 6 months.

Those are my latest readings:
SOH: 95.04%
@ 15400km

If this rapid degradation continues, I will be down to 66% within 3 1/2 years or 100.000km.

LeftieBiker
Posts: 9598
Joined: Wed May 22, 2013 3:17 am
Delivery Date: 31 May 2013
Location: Upstate New York, US

Re: The 40KWH Battery Topic

Tue Sep 04, 2018 5:35 am

There is usually more drop in the first year of a lithium battery's life than later years, but 5% is too much if it extends out to 10% annual. Either there is another "BMS Error" in the 40kwh packs, or they are living up to the nickname "Lettuce Pack."

It's about time to check mine again, but we're in a heatwave yet again, and I don't want to charge to 100%. Maybe I'll read it at the 70% or so it's at now.
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.

DaveinOlyWA
Posts: 13281
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

Tue Sep 04, 2018 6:06 am

mdeekay wrote:I also got 2 major drops in SOH on my 2018 Nissan Leaf within the last 6 months of ownership. I lost 2 percent in mai and another 1.5 percent in august. I am living in norway and the car was parked in a garage when the drops happened. So heat can't be an issue.
My leaf has driven 15000km so far and got only one QC during the last 6 months.

Those are my latest readings:
SOH: 95.04%
@ 15400km

If this rapid degradation continues, I will be down to 66% within 3 1/2 years or 100.000km.


At least you are on pace for a warranty replacement. I am on pace now to have 33% degradation at 100,000 miles so I will just miss it.
2011 SL; 44,598 miles. 2013 S; 44,840 miles.2016 S30 deceased. 29,413 miles. 2018 S40; 11,987 miles, 485 GIDs, 37.6 kwh 110.89 Ahr , SOH 96.00, Hx 115.22
My Blog; http://daveinolywa.blogspot.com" onclick="window.open(this.href);return false;

Guzziboy
Posts: 8
Joined: Sat Aug 18, 2018 12:17 pm
Delivery Date: 19 Aug 2018

Re: The 40KWH Battery Topic

Tue Sep 04, 2018 8:54 pm

Re: 2016 30 kWh Battery data
EditDelete postReport this postQuote
Tue Sep 04, 2018 11:46 pm

I bought my 2018 Leaf on Aug 25. We live in New Hampshire and ended up doing a little 1200 mile road trip this last week to break the car in which brought us to all 6 New England States and New York State. The weather was quite hot, 90+ degrees most days. The car did better than I had personally expected. I didn't buy this car to take road trips in. Essentially I bought it for winter commuting. However it did quite well for 250 mile days though after 2 DCQC the battery temps were 120+F on those days. Keep in mind those days incurred 70mph highway speeds at summer temps. For the cars price point ( sub $20k after Tax Credit) I think it's a fantastic vehicle. Anyhow here are Leaf Spy numbers the day I brought it home and after returning from the 1200 mile trip.

8/26/18
SOH 98.41
Hx 98.12
AHr 113.604

9/2/18 after 1200 miles
SOH 98.34
HX 101.76
AHr 113.524

Worth noting that in between those two samples the following was recorded around 1000 miles showing that numbers dipped and then increased. Which is sort of interesting.
SOH 98.22
HX 101.35
AHr 113.466

LeftieBiker
Posts: 9598
Joined: Wed May 22, 2013 3:17 am
Delivery Date: 31 May 2013
Location: Upstate New York, US

Re: The 40KWH Battery Topic

Tue Sep 04, 2018 10:37 pm

Doing QCs tends to improve the stats. It will be interesting to see if they stay good, or if they drop in the next few weeks.
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.

Kieran973
Posts: 37
Joined: Tue Jun 19, 2018 6:51 pm
Delivery Date: 20 Jun 2018

Re: The 40KWH Battery Topic

Tue Sep 04, 2018 10:54 pm

Hi Guzziboy,

On those 250 mile hot summer trips, do you remember how long each of your DCQC sessions took? What SOC did you charge to? And how many miles did you drive between these two DCQC sessions?

Also, I saw on another thread that a local Nissan dealer had messed up your sub-20K Leaf deal, and you had walked. But it looks like it worked out after all? So does that mean that the discounts in question can indeed be combined?

Thanks.

Guzziboy
Posts: 8
Joined: Sat Aug 18, 2018 12:17 pm
Delivery Date: 19 Aug 2018

Re: The 40KWH Battery Topic

Wed Sep 05, 2018 5:15 am

Regarding the purchase of the vehicle. The first deal fell through when I went to pick up the car the dealer discovered that Nissan wasn’t going to reimburse them for the stacked utility rebate. They pushed a lease on me and I declined. I reached a deal with an out of state dealer for same package level (SV) for $27,000 which included a college degree rebate of $1000 that I didn’t know I had coming. Anyhow while we were driving to pick up the car the first dealer called me and ended up matching the price after some bellyaching (and continuing to push the lease).

Here is the list of QC from EVGO during my trip. Keep in mind there was level 2 charging done at the hotels also. Honestly SOC was all over the map during charging based on where I was and where I needed to be. SOC varied from 10% to 50%. Our longest single day was 285 miles. I think anymore than that and QC charging would really start to be limited on speed. But To be honest we weren’t really affected by charge rates to that point as 30 min breaks were welcome.

Quechee VT.
24 min. 12.2kwh
Sturbridge, MA.
24min 7.8 kWh
37 min 17.7 kWh
Salem, NH
10 min 4.5 kWh
30min 14.5 kWh
20min 7.4 kWh
31min 15.2

I actually found the QC was taking .01 or more chunks from the SOH and that after I got home and trickle charged the car the SOH went up. It may be an anomaly.
Last edited by Guzziboy on Wed Sep 05, 2018 6:26 am, edited 1 time in total.

DaveinOlyWA
Posts: 13281
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

Wed Sep 05, 2018 6:08 am

Interesting to see that it is possible for stats to go up. It hasn't happened to me but right now I am almost exclusively fast charging so will see how things change this Winter when I start charging more at home again.
2011 SL; 44,598 miles. 2013 S; 44,840 miles.2016 S30 deceased. 29,413 miles. 2018 S40; 11,987 miles, 485 GIDs, 37.6 kwh 110.89 Ahr , SOH 96.00, Hx 115.22
My Blog; http://daveinolywa.blogspot.com" onclick="window.open(this.href);return false;

Guzziboy
Posts: 8
Joined: Sat Aug 18, 2018 12:17 pm
Delivery Date: 19 Aug 2018

Re: The 40KWH Battery Topic

Wed Sep 05, 2018 6:29 am

LeftieBiker wrote:Doing QCs tends to improve the stats. It will be interesting to see if they stay good, or if they drop in the next few weeks.


It will be interesting to see because the car will be used for short commuting trips in the coming weeks whenever the temps start dropping. I was pretty impressed that the 150 mile range was very accurate even with 90% highway use. Averaged 4.2 miles/kWh in 1200 miles. Around town I can see the range being much higher.

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