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

[Overheatingleaf]

Did another quick charge yesterday from 18% on the dash, on s pretty hot day. Did it in landscape mode this time. Looks like my charge starts to slow down around 50%. Not sure if it's from the battery temp or just a normal charge curve. I'll see if I can embed the picture here.

https://photos.app.goo.gl/6b9ekcFCQkQRATCe6

[dwl]

Did another quick charge yesterday from 18% on the dash, on s pretty hot day. Did it in landscape mode this time. Looks like my charge starts to slow down around 50%. Not sure if it's from the battery temp or just a normal charge curve. I'll see if I can embed the picture here.

https://photos.app.goo.gl/6b9ekcFCQkQRATCe6

Thanks for posting and very interesting. I am a bit confused as I thought you didn't have the update and yet it looks like Nissan has capped the temperature to 50°C which is a good thing for battery life (as per 2018 models) but I thought this hadn't been applied to the 2016-2017 models. Your GIDs % seem very low at full charge. Is the max GID setting original value?

[Overheatingleaf]

Yeah, no update yet as far as I know. I had it at the dealer on Friday, but I think if they had applied the update, I would have seen the capacity bars back to full even if just temporarily. I'm not sure what the GID's should be at, but given that I'm 4 bars down at the moment, it would make sense that I'm pretty low.

This test was on an evgo charger. I think i might try a blink charger on my way home today, just to see if it's and different. I imagine they would be the same, I think the car is the one dictating how much power it can draw, but there's one not too far out of my way, so might as well give it a shot.

[mn4az]

On an unrelated thing I am taking my '16 Leaf in for warranty service next week and will ask that they perform the update at the same time. I will be sure to capture before/after LeafSpy stats.

@rcm4453 given you are in MN, like me, and have lost bars already on your '16 Leaf I will be super interested in your analysis as well.

Apologies for the formatting. To lazy to fix. 6/20 is pre-software update and 6/21 is post-software update.

Date 6/19/2018 6/21/2018
AHr 68.58 73.66
SOH 86.29% 92.68%
V 395.67 395.26
Hx 78.79% 78.28%
ODO 32561 32643
QC 9 9
L1/L2 1708 1712
SOC 97.80% 97.80%
GIDS 313 337
kWh 24.3 26.1

Will take another reading on July 2 after a full charge to see how things are settling in.

[rcm4453]

On an unrelated thing I am taking my '16 Leaf in for warranty service next week and will ask that they perform the update at the same time. I will be sure to capture before/after LeafSpy stats.

@rcm4453 given you are in MN, like me, and have lost bars already on your '16 Leaf I will be super interested in your analysis as well.

Apologies for the formatting. To lazy to fix. 6/20 is pre-software update and 6/21 is post-software update.

Date 6/19/2018 6/21/2018
AHr 68.58 73.66
SOH 86.29% 92.68%
V 395.67 395.26
Hx 78.79% 78.28%
ODO 32561 32643
QC 9 9
L1/L2 1708 1712
SOC 97.80% 97.80%
GIDS 313 337
kWh 24.3 26.1

Will take another reading on July 2 after a full charge to see how things are settling in.

Got this update Monday.

Before update was down 2 bars

SOH: 75.45%
AHr: 56.97
Hx: 68.83%

After update all 12 bars restored

SOH: 87.71%
AHr: 69.71
Hx: 68.57%

GOM is overestimating range by a lot more now. I don't pay attention to it anyway all I care about is SOC.

I'm still getting the same range as before, arrived to work with the same ~85% SOC remaining even after update. I know it will take weeks for more accurate readings. Even if the 87% SOH turns out to be fairly accurate that's still way too much degradation for a 2 year old car with 27k miles, glad I leased!

[JPWhite]

I'm still getting the same range as before, arrived to work with the same ~85% SOC remaining even after update.

This is invaluable information. The update won't recover lost range, the degradation to date is real. I suppose the hope is the software will estimate the range better and protect against additional accelerated degradation.

[SageBrush]

Did another quick charge yesterday from 18% on the dash, on s pretty hot day. Did it in landscape mode this time. Looks like my charge starts to slow down around 50%. Not sure if it's from the battery temp or just a normal charge curve. I'll see if I can embed the picture here.

https://photos.app.goo.gl/6b9ekcFCQkQRATCe6

I just realized that this LeafSpy graph lets us estimate the kWh put in the battery per change in SoC.
Easier than finding a ChargePoint station to estimate full battery capacity.

[lorenfb]

I'm still getting the same range as before, arrived to work with the same ~85% SOC remaining even after update.

This is invaluable information. The update won't recover lost range, the degradation to date is real. I suppose the hope is the software will estimate the range better and protect against additional accelerated degradation.

Right. And the SOH and Ahrs will most likely return to the pre-reset values. Again, Nissan just basically reduced their liability by changing
the slope of the rate at which bars drop over the warranty period.

[rcm4453]

I'm still getting the same range as before, arrived to work with the same ~85% SOC remaining even after update.

This is invaluable information. The update won't recover lost range, the degradation to date is real. I suppose the hope is the software will estimate the range better and protect against additional accelerated degradation.

Right. And the SOH and Ahrs will most likely return to the pre-reset values. Again, Nissan just basically reduced their liability by changing
the slope of the rate at which bars drop over the warranty period.

+1

I agree!

[webeleafowners]

So rookie here. I think that SOH stands for state of health. If the State of health and the AHr both rise how is that "changing the curve". Honestly don't understand what is going on there. In my little blonde mind if I see the AHr number rising is this not a good thing?

Is the general consensus that this is some kind of fraud on the part of Nissan. Its just kind of hard to believe. I mean sooner or later that kinda thing always comes back to bite you in the ass.


For our type of driving the GOM has always been a good indicator of real range. Just a combination of slower speed limits here as well as 60/40 highway driving. It will be interesting to see if things change going forward after the update as far as the GOM goes.