Page 120 of 152

Re: 2016-2017 model year 30 kWh bar losers and capacity losses

Posted: Tue Jun 12, 2018 1:38 pm
by Reddy
WetEV wrote:Yes. Soon followed by releasing a new battery chemistry (the "lizard") with more acceptable life. I'm interested, as I might want to buy a used Leaf in a few months or so. History doesn't repeat, but it rhymes.
I'm still waiting. My 2011 still works fine in town. Finally, were seeing some DCQCs being added over here in Eastern WA (Kennewick and Ellensburg now, and soon to have Cle Elum, George, Yakima, Prosser, Richland, Pasco, Connell). These will expand my range, but might speed degradation. I'll reassess in another 6-7 years.

Re: 2016-2017 model year 30 kWh bar losers and capacity losses

Posted: Tue Jun 12, 2018 2:52 pm
by johnlocke
Just got the car back from the dealer today. Turns out that they didn't start work on it until yesterday. It's only supposed to be 4 hr job. 4 days seems a little excessive. Anyway the old battery stats were 49.55 AH, SOH = 62.84%, and Hx = 55.33%. New battery IS 82.34 AH, SOH = 103.60%, and Hx = 97.07%. Interestingly enough, When I picked it up the SOH and AH were slightly lower (97% and 79.34 AH) then it was when I got it home (numbers above). I'll be checking it again after several battery cycles to see if it changes some more. I was told by the dealer that batteries are shipped with very low charge, just enough to power on the electronics and move the car to a charger. That could be why the numbers changed as the battery warmed up and I exercised it on the way home.

For those who are interested, the SN for the battery is 230SM1185H000875. According to the service adviser replacement cost of the battery was almost $10,000. I assume this was including labor. This sounds like a "Go to Hell" price to me although the dealer would normally make a profit on both the battery and labor and could discount it somewhat. Unless the battery is still under warranty I won't be replacing it at that price. I'm expecting this one to fail at about 90.000 miles and about 3 years from now while still under the original warranty. That will give me a 10,000 mi buffer on the expected failure. Still have over five years left time-wise so mileage is the limiting factor.

Re: 2016-2017 model year 30 kWh bar losers and capacity losses

Posted: Tue Jun 12, 2018 9:39 pm
by dwl
johnlocke wrote:For those who are interested, the SN for the battery is 230SM1185H000875.

Great news that replacements are flowing through and that looks like a brand new pack. It would be interesting if you could share the controller version number (on same HV BATTERY line in Read ECUs) and note the voltage at 100% charge.

Re: 2016-2017 model year 30 kWh bar losers and capacity losses

Posted: Wed Jun 13, 2018 5:30 am
by vishvik
jbuntz wrote:
vishvik wrote:Lost my 4th bar today :( 26K miles. Leased it new 1 year and 11 months back. Contacted a local Nissan dealer and made a service appointment for this Friday. I do have LeafSpy but not sure what to look for. Can someone please point out? Thanks!
Swipe right to the cells page and record the AHr SOH Hx and cell difference in mV at full charge.


I looked up this on a full charge and this is what I saw:
AHr=49.86 SOH=62.73% 395.09v Hx=57.70%
min/ave/max = 4.108 4.116 4.123 (15mv)

At the dealership now where a leaf tech is looking over this issue. I also found a recall notice show up when booking my appointment (related to 30KW battery!). Fingers crossed.

Re: 2016-2017 model year 30 kWh bar losers and capacity losses

Posted: Wed Jun 13, 2018 5:42 am
by vishvik
vishvik wrote:
jbuntz wrote:
vishvik wrote:Lost my 4th bar today :( 26K miles. Leased it new 1 year and 11 months back. Contacted a local Nissan dealer and made a service appointment for this Friday. I do have LeafSpy but not sure what to look for. Can someone please point out? Thanks!
Swipe right to the cells page and record the AHr SOH Hx and cell difference in mV at full charge.


I looked up this on a full charge and this is what I saw:
AHr=49.86 SOH=62.73% 395.09v Hx=57.70%
min/ave/max = 4.108 4.116 4.123 (15mv)

At the dealership now where a leaf tech is looking over this issue. I also found a recall notice show up when booking my appointment (related to 30KW battery!). Fingers crossed.


They are ordering a battery for my car!! 2-6 weeks is what my service advisor told me but hinted it could be close to 2 weeks.

Re: 2016-2017 model year 30 kWh bar losers and capacity losses

Posted: Wed Jun 13, 2018 6:15 am
by DaveinOlyWA
SageBrush wrote:^^
That looks pretty convincing. Thanks


Still its death by a thousand tiny cuts. Charging, regen; its all the same. Even a tiny loss in efficiency adds up since the car is essentially going thru hundreds of regen periods on short drives.

Re: 2016-2017 model year 30 kWh bar losers and capacity losses

Posted: Wed Jun 13, 2018 7:45 am
by OrientExpress
It's great news that the BMS reprogramming fix has finally hit the streets. Nissan has been testing this fix since last year when it was first observed. In some cases they are still replacing the entire pack, but now most cars presenting with the phantom accelerated capacity loss can be fixed.

Re: 2016-2017 model year 30 kWh bar losers and capacity losses

Posted: Wed Jun 13, 2018 10:35 am
by rcm4453
OrientExpress wrote:It's great news that the BMS reprogramming fix has finally hit the streets. Nissan has been testing this fix since last year when it was first observed. In some cases they are still replacing the entire pack, but now most cars presenting with the phantom accelerated capacity loss can be fixed.



That's not a good thing will mean many won't be getting a new battery. If you're down 2 bars like the guy on FB was, they reprogram the BMS now it shows 12 bars isn't Nissan just hiding the capacity loss to avoid so many battery replacements? Sure sounds like it to me! After all when has Nissan ever had the consumer's best interest in mind?

Re: 2016-2017 model year 30 kWh bar losers and capacity losses

Posted: Wed Jun 13, 2018 11:02 am
by goldbrick
OrientExpress wrote:It's great news that the BMS reprogramming fix has finally hit the streets. Nissan has been testing this fix since last year when it was first observed. In some cases they are still replacing the entire pack, but now most cars presenting with the phantom accelerated capacity loss can be fixed.


Do you have any data to support the 'phantom' part of the accelerated capacity loss?

My 2017S is supposedly down to SOH of 92% or so but I still regularly go > 100 miles on a 90% charge but I live at 5400 ft elevation and my dash shows my efficiency at 4.5 mi/kWh so maybe that's expected. I suppose it's possible that the 30kWh BMS has faulty firmware but this is the first I've heard of it.

Re: 2016-2017 model year 30 kWh bar losers and capacity losses

Posted: Wed Jun 13, 2018 11:22 am
by JPWhite
rcm4453 wrote:
That's not a good thing will mean many won't be getting a new battery. If you're down 2 bars like the guy on FB was, they reprogram the BMS now it shows 12 bars isn't Nissan just hiding the capacity loss to avoid so many battery replacements? Sure sounds like it to me! After all when has Nissan ever had the consumer's best interest in mind?


After reprogramming the BMS it will be reset and will show all 12 bars. It will settle quickly down to the real capacity within a few weeks of driving as the BMS determines the batteries characteristics. This is normal after a BMS reprogram and not fancy finger-work by Nissan.