2013 Low Battery Capacity AHr Battery Degradation

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I have what may be a unique experience with the 2013 low capacity issue.

I just purchased a 2013 SL this month (december 2013), and it has had issues since the very first day it came off the lot. To add, the VIN door sticker says 03/13 (march 2013) and I bought the car in December. Nissan is not able (or unwilling) to tell me where the car was between March and September! I got the leaf new with 260 miles, and was already having problems within 100 miles of that. I have since driven about 500 miles just to chart how the car is performing. Here are two examples on a day with air temperature of about 60F, I drove 37.3 miles at mostly 75 mph for 2.9 mi/kWh and the SOC went from 79% to 8%. But at 2.9, I should have been able to go about 43 miles. This seems about 15% short (or maybe 13% short with an adjustment for temperature, but I would think that at the power I was draining, the battery would have been warmer than even 70F). On another day, I drove 63.7 in-town miles at 4.6 mi/kWh and the SOC went from 79% to 5%. This also seems about 10-15% short. The day that I took ownership of the car it gave the EV System Warning Light and Turtle mode even though it was fully charged. At one point on that first day of ownership before I starting keeping detailed records, the car only drove 28 miles with 45% SOC at a very steady 43 mph!!! (some other details are that it was 20F, negligible wind, uphill a net 200 feet but not that much in the way of hills, and I used no climate control). I don't know the mi/kWh for that trip, but it should have been around 5.

I just ordered the OBDII device, so I'll be able to give an Ah measurement as soon as I get the car back from the dealer who is investigating my issues. But I do have 12000 miles of experience in a 2013 SV, and this car is clearly different.

But here is a REALLY important detail about all this. Where was this car for the 6 or 9 months between manufacture and sale??? Nissan says this is not relevant as I purchased a new car and all 'new' means is not previously owned and no 'significant' repairs. The representative I spoke with said that the condition and location of the battery during those 9 months are irrelevant to the car being NEW. The rep gave all kinds of analogies that were essentially buyer-beware, New means only 'not previously owned'. To all of us who understand battery degradation, this is absurd. The car could have sat at 100% in full sun, in a hot climate all that time. Or maybe it was driven to turtle, and sat at turtle for 9 months which would probably be worse. But seriously, I can't believe that Nissan would really hold that the condition and state of the battery for 9 months is completely irrelevant to the drive train of the car being NEW. If they haven't already done this, they need to issue mandatory guidance to dealers as to the storage condition of Leafs prior to sale.

added: This car came from the Baltimore-DC market. I specifically bought it there because the market was robust there. I live 200 miles away where I may be the only leaf driver in the county.
 
I did that and I could only verify that it was bounced between 2 or 3 area dealers since October. But nothing for March to September.
I did just buy one of the cheap VIN search reports, and it reports the car being titled with 11 miles. That should not be possible since I got it with 260 miles, so now maybe I'll consider paying for the carfax report. But I need to know if they will tell me what state, date, and miles when it was titled. I'm not sure if they do that... And I really can't believe that a dealer would be involved in that level of fraud.
 
flarend said:
To add, the VIN door sticker says 03/13 (march 2013) and I bought the car in December.
Your experience is a good reminder that knowing the provenance of a BEV is just as important as it is for a work of art. Additionally, if a Leaf sits around anywhere for 9 months it is going to lose significant capacity... expect perhaps in northern Alaska. It's a good idea to check the date of manufacture for any BEV you are considering purchasing.
 
stjohnh said:
bradbissell said:
Very interested to hear if other people are having the same performance from a 2013. After nearly 10k miles I am looking at a SOH value of 99.


Code:
Date       Ahr      %CAP    %SOC  SOH     Hx      GIDS    V Max   mv Delta   Max Batt Temp F     Total Miles
6/24/13   66.850  101.905  97.100                         4.135    10.000     80.000
7/22/13   67.050  102.210  96.900       103.090    283    4.125     9.000     79.500
8/1/13    66.150  100.838  97.100       101.400    284    4.128     9.000     78.800               4960
8/12/13   65.810  100.320  96.800       100.760    283    4.128    12.000     68.900               5443 
8/28/13   65.220   99.421  97.100        99.760    283    4.134     9.000     75.200               6166
9/6/13    65.370   99.649  96.800        99.960    283    4.113    11.000     67.100               6415
9/18/13   65.090   99.223  97.000        99.590    283    4.125    14.000     58.100               6879
9/26/13   63.580   96.921  96.700        97.610    274    4.132    12.000     63.900               7223
9/27/13   64.090   97.698  97.000        98.270    278    4.121    10.000     70.000               7274
10/10/13  63.020   96.067  96.800        96.870    272    4.130    11.000     56.500               7706
10/23/13  64.990   99.070  96.900        99.460    282    4.128     9.000     59.200               8303
11/26/13  64.900   98.933  97.200  99.0  99.340    281    4.130    11.000     50.500               9575

Looks like you have one of the last of the Japanese Leafs, those made May 2013 or later I think are all made in Smyrna, and those are the ones that have new capacities in the 59-61 range.

my numbers are better than his and my manufacture date is 11/13. this really shows the pitfalls of buying in areas where EVs are not moving well. here, they are sold off the lot almost as soon as they arrive.
 
I found this thread yesterday and am now about half way through but wanted to post. In yesterday's mail I received my LeafDD. The car was already recharged to 80% so I hooked the LeafDD to see my status. Graffi is now at 4817 miles during 16 weeks of ownership. Date of MFG shows 08/13, but no location on the sticker.

Here are my reading with the car charged to 80% (although it always shows 79% on the dash) taken about 5:30pm.

Page 1: 206 gids, 79.00% SOC, 73.33 g%, 47.27 Ah, 22.6*c (71.6*f, garage temp now 71*, but was up to 76*f this afternoon.

Page 2: 22.6, 22.4, 0.0+, 22.2
S 79.0000 206
C 59.8475 389.0
H 91.52 0.4
11.9 173

Page 3:
4.060
4.053
4.047
The high and low cell numbers are jumping all around with very little balancing. More so now that I have had the car on for a while (still plugged in, but not charging).

I will now change the settings to allow charging to 100% (we have the AV EVSE from the free CEC program with 40A breaker). I will let you know the numbers tomorrow morning.

What really concerns me is the C of 59.8475 on a brand new 2013 SL we got 9/6/13, the day it arrived from the factory. We now have 4817 miles and except for a couple of times, has always been charged to 80%


Here are my reading with the car charged to 100% taken at noon - before any driving

Page 1: 259 gids, 96.93% SOC, 92.20 g%, 58.01 Ah, 19.7*c (67.4*f, garage temp now 64*, but was lower during the night).

Page 2: 19.7, 19.2, 0.0+, 18.7
S 96.9375 259
C 59.8475 395.5
H 91.52 0.4
12.3 170

Page 3:
4.134
4.124
4.119
The high and low cell numbers are jumping all around with lots of balancing(almost a solid bar on the bottom, only 1 cp blank). I have the car on for a while (still plugged in, but not charging).

What really concerns me is the C of 59.8475 on a brand new 2013 SL we got 9/6/13, the day it arrived from the factory. We now have 4817 miles and except for a couple of times, has always been charged to 80%

We will be using Graffi this afternoon for a good bit of driving, then let it charge up to 100% overnight again and see where we are.


I am planning soon (I wish I could do it this weekend) to do a distance challenge driving a 10 mile circuit on the same street as the dealer with both L2 and L3. My first run will be on a fairly flat section of freeway close by just to see what the higher speed range is and see how low I can discharge watching the Gids, then fast charge to 80%, move over the L2 to finish off the charge, then go again on the slower speed street, again fairly flat with 35mph limit and lots of lights, but long blocks between lights. It also will be about 10 mile circuit, passing the dealer close to the middle. I will just circle the lights on either side of the dealer when I get very close to the end so I can quickly pull into the L3 charger before it dies on me. I will post the results of the run as soon as it is over.
 
I observed an interesting thing with my 2013 compared to my 2011 pertaining to battery degradation. When my 2011 lost a cb, it was down 20% as my capacity gauge read 80%. Nissan said they 'tweaked' the chemistry in the 2013 bp, but I'm not sure how much it has helped yet because at 54.8 AH I lost my first cb, only 7800 miles/10 mos. On my 2011 I had lost a cb at 10,000 miles/12 mos., BUT since they re-calibrated the cbs for 2013, even though I lost a bar, it's exactly 85%/239 Gids. So I still can go 100 miles on a 98% charge as long as I keep it around 5.8 m/kW h. I believe the 'tweaking' may still help a little. I'll see where it is at 10k miles and one year. If it stays at 85% or a 15% loss, then it would be about 5% better.
 
JeremyW said:
Ouch looks like you're the first to lose your the first to lose a CB, LEAFfan.

Yeah, I think so. Haven't seen any other reports yet. A friend of mine's is at a 12% loss, so he only has 3% to go. The AH actually went down during the cooler months, which surprised me. I expected to stop or go up a bit, but it didn't. And I've stayed off the freeways for awhile since my windshield was broken by a truck's flying rock (not a stone).
 
LEAFfan said:
Nissan said they 'tweaked' the chemistry in the 2013 bp, but I'm not sure how much it has helped yet because at 54.8 AH I lost my first cb, only 7800 miles/10 mos.
Wow! Sorry to hear this. I really hope the hot battery addresses this type of loss.
 
IraqiInvaderGnr said:
284 Gids at 100% charge AHR 67.36 SOH 100% Health 110.71% odo 12,800 921 L1/L2s. I drive 50 miles round trip to work every day.

Down to 283 Gids now at 100% charge Ahr 66.71 Hx=116.68 Odo=15,613 QC=2 (Factory) L1/L2=1,073

The Degradation has just started to show on the LeafSpy app.
 
IraqiInvaderGnr said:
Down to 283 Gids now at 100% charge Ahr 66.71 Hx=116.68 Odo=15,613 QC=2 (Factory) L1/L2=1,073

The Degradation has just started to show on the LeafSpy app.

Somewhere in the distance.. a small violin plays..
 
Update with some interesting behavior:

Code:
Date       Ahr      %CAP    %SOC  SOH     Hx      GIDS    V Max   mv Delta   Max Batt Temp F     Total Miles
6/24/13   66.850  101.905  97.100                         4.135    10.000     80.000
7/22/13   67.050  102.210  96.900       103.090    283    4.125     9.000     79.500
8/1/13    66.150  100.838  97.100       101.400    284    4.128     9.000     78.800               4960
8/12/13   65.810  100.320  96.800       100.760    283    4.128    12.000     68.900               5443 
8/28/13   65.220   99.421  97.100        99.760    283    4.134     9.000     75.200               6166
9/6/13    65.370   99.649  96.800        99.960    283    4.113    11.000     67.100               6415
9/18/13   65.090   99.223  97.000        99.590    283    4.125    14.000     58.100               6879
9/26/13   63.580   96.921  96.700        97.610    274    4.132    12.000     63.900               7223
9/27/13   64.090   97.698  97.000        98.270    278    4.121    10.000     70.000               7274
10/10/13  63.020   96.067  96.800        96.870    272    4.130    11.000     56.500               7706
10/23/13  64.990   99.070  96.900        99.460    282    4.128     9.000     59.200               8303
11/26/13  64.900   98.933  97.200  99.0  99.340    281    4.130    11.000     50.500               9575
01/06/14  67.070  100.000  96.700 100.0 103.160    282    4.085    13.000     37.800              10886

Looks like the recent arctic freeze (battery reached a low of 19F) has reset the battery SOH and AHr to "like new".

The "new" BMS software isn't supposed to over-predict capacity, right?
 
I just acquired a 13 built in May and immediately saw a low SOH (91%) reported by LeafSpy. Boomer23 pointed me here, but this thread is incredibly long so I probably won't read it all. I just thought I'd add my info.

On my way home from the dealer, I got the LBW a few miles before I got home. When I got home, it had 48 Gids, 26.1% SOC. So my guess is the LBW happened around 50 Gids, 28% SOC (according to Leaf Spy).

After charging it as much as it would go (supposedly 100%), this is what Leaf Spy shows:

It says it's at 260 Gids, 20.2 kWh remaining.

My wife's 13 was built in JUNE, and it's at 100.8% SOH after 6 months of normal driving (it was 98% when we first got it). Here's its info:

It gets 281 Gids.

- Tyrel
 
Computerizer said:
I just acquired a 13 built in May and immediately saw a low SOH (91%) reported by LeafSpy. Boomer23 pointed me here, but this thread is incredibly long so I probably won't read it all. I just thought I'd add my info.

On my way home from the dealer, I got the LBW a few miles before I got home. When I got home, it had 48 Gids, 26.1% SOC. So my guess is the LBW happened around 50 Gids, 28% SOC (according to Leaf Spy).

After charging it as much as it would go (supposedly 100%), this is what Leaf Spy shows:

It says it's at 260 Gids, 20.2 kWh remaining.

My wife's 13 was built in JUNE, and it's at 100.8% SOH after 6 months of normal driving (it was 98% when we first got it). Here's its info:

It gets 281 Gids.

- Tyrel


wow that sucks. one thing about the batt stats. granted today was a bad day for an impromptu range test but I got no more than 73-74 miles on a trip that had a return trip averaging 55-57 mph. The trip there was only slightly faster at 60-62 mph. was expecting a much better trip than that considering I started with 284 GIDs and 67.36 ahr.

how far did you drive to get to 48 GID? i ended up at 14 GID and 71.8 miles
 
Update: After charging to 100%, I then drove the hell of out the vehicle today to get it down. I finally ended up getting turtle a safe distance from my garage.

According to Leaf Spy, I went from 260 GIDs and 20.2 kWh down to 5 GIDs and 0.4 kWh. Subtracting those comes up with 19.8 kWh. I drove 68.2 miles. The dash says I got 3.2 mi/kWh, which would mean I used 21.3 kWh, which does not agree with Leaf Spy.

According to the dash, I hit LBW at 18% and VLBW at 9%. After VLBW, I was able to drive another 14 miles before turtle -- 12 miles of that was after Leaf Spy said "0.0 to rsrv".

I have a full log from Leaf Spy (30 second interval) if anyone wants to look at it to try to diagnose anything...

http://tyrel.binarypeople.net/car/BatLog_drain_combined.csv

Final battery status at turtle:
 
Computerizer said:
On my way home from the dealer, I got the LBW a few miles before I got home. When I got home, it had 48 Gids, 26.1% SOC. So my guess is the LBW happened around 50 Gids, 28% SOC (according to Leaf Spy).
Yup, I've tested that several times, LBW turns on at 50 GIDs.

If it makes you feel better, I've got late '13 SV and my battery shows 58.9Ah, 89% Hx and 256 GIDS since new.
 
DaveinOlyWA said:
wow that sucks.

Dave, it really doesn't suck. In fact that's the whole point of this thread, that certain 2013s show low numbers on LeafSpy BUT THAT THE PACK IS REALLY OK, just different from what we've come to expect.
 
Boomer23 said:
certain 2013s show low numbers on LeafSpy BUT THAT THE PACK IS REALLY OK, just different from what we've come to expect.

The frustrating part about it is that it gives the LBW and VLBW so early... I've got anxiety problem as it is, I don't need it yelling at me miles before it needs to. :)

Any thoughts how this affects the battery bars and GOM? I forgot to notice how many bars I had when I hit LBW and VLBW.

Just before VLBW, my GOM said 8 miles. Since I went 14 miles, but MUCH slower, it was probably pretty close. However since it disappears at that point ("---"), it became useless long before I think it should have. That's what made the getting-to-turtle part so frustrating: I couldn't trust Leaf Spy (since it said I'd hit turtle long before I actually did) OR the GOM (since it said "---") to give me any clue whatsoever about how far I had to go.

NOW I know that 5 GIDs is my floor, and that can help, but it's still frustrating.

My dealer is willing to swap out the vehicle or the battery pack if something is seriously wrong with it. The question is, I guess, is it really worth having them do that? Apparently the capacity is there, the data are just confusing. Is it worth getting the bad data fixed?
 
The one parameter that seems reliable down near turtle is the %SOC on LeafSpy. It seems to decline in a semi-linear way down to 1.4% at turtle.

As far as swapping out the car, it's totally up to how you feel about it personally. It's pretty incredible that your dealer is willing to do anything on the basis of LeafSpy data. I would expect anybody from Nissan or a dealer to tell you that data is irrelevant, that Nissan's instruments show the battery to be ok, so you're on your own. IDK, if you'd feel better swapping it for another LEAF that shows high numbers like Dave's does, you'd probably feel better. And down the road, when you actually DO lose capacity, at least you'd have a car that you know had high Amp hours to start with.
 
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