2015: Battery Data Report @ 100% Charge

[lorenfb]

Alright I'll finally get around to posting the screen shot info from leafspy as I've got some time to kill.

2015 Leaf SV got it on July 25 2014

The only thing I recorded was a mental note of 292 GIDS when I got the leaf spy ap.

Nov 3rd these screen shots were at 100% from the L2 at home, I drove to work and charged to 100% on L1 and took a single screen shot and it had 292 GIDS and 22.6 kWh SOC 97.4 but I didn't take screen shots with the other info. I think I might have had CC running in the AM though.
Nov 3 '14: KM - 11 962, Soh - 100%, Charges - 11 QC 256 L1/L2, Gidds - 289, kWh - 22.4, Soc - 96.4%, Hx - 101.94%, Ahr - 64.38
Jan 17 '15: KM - 19 338, Soh - 100%, Charges - 38 QC 453 L1/L2, Gidds - 292, kWh - 22.6, Soc - 97.2%, Hx - 108.32%, Ahr - 64.38

now here's the odd thing, that was at 100% but I took a peak at the car when it was at 97-98% on L1 and got this:
Jan 17 '15: KM - 19 338, Soh - 100%, Charges - 38 QC 453 L1/L2, Gidds - 293, kWh - 22.7, Soc - 97.5%, Hx - 108.32%, Ahr - 64.38

I'm guessing this is the batteries balancing themselves?

The data on your 2015 battery looks great at 16K km, e.g. 64 Ahr. My 2013 with 22K km is at 56 Ahr
which started at about 60 Ahr when new. So maybe the 2015 battery got some nice tweaks.

 

[dmk23]

2015 Leaf SL Manufacture date June 2014 - Leased Dec 14 2014 : Mileage: 1040 Charged: 3 QC 80 L1/L2

100% Charge:
GIDs: 268
kWh: 20.8
SOH: 91%
Hx: 87.0%
Ahr: 57.03
Battery Temp: 66.8 deg F

Would greatly appreciate feedback from anyone on whether or not my battery has problems and steps I could take. Been driving for 6 weeks and am not getting nearly the range I expect, given my commute involves no freeway driving (I average 4.5-4.6 mi/kWh). One round trip of 22.6 miles @ 4.5 mi/kWh drops the battery ~31%, no matter what SOC I start from (I've started from 100%, 80%, 70%, 60%).

Is there a lot of capacity below 10-20% that I'm not accessing? Or something else? I do have one cell that that is usually 45 - 85mV below all the others, depending on SOC

Not sure what to do, seems I might have gotten somewhat of a lemon, and so far Nissan has not been very helpful.

Thanks in advance for any help.

 

[lorenfb]

2015 Leaf SL Manufacture date June 2014 - Leased Dec 14 2014 : Mileage: 1040 Charged: 3 QC 80 L1/L2

100% Charge:
GIDs: 268
kWh: 20.8
SOH: 91%
Hx: 87.0%
Ahr: 57.03
Battery Temp: 66.8 deg F

Would greatly appreciate feedback from anyone on whether or not my battery has problems and steps I could take. Been driving for 6 weeks and am not getting nearly the range I expect, given my commute involves no freeway driving (I average 4.5-4.6 mi/kWh). One round trip of 22.6 miles @ 4.5 mi/kWh drops the battery ~31%, no matter what SOC I start from (I've started from 100%, 80%, 70%, 60%).

Is there a lot of capacity below 10-20% that I'm not accessing? Or something else? I do have one cell that that is usually 45 - 85mV below all the others, depending on SOC

Not sure what to do, seems I might have gotten somewhat of a lemon, and so far Nissan has not been very helpful.

Thanks in advance for any help.

Both the SOH and Ahr are below what one should expect for only 1K miles.
The potential problem is convincing a Nissan dealer that you have a problem,
since most all service departments don't think in the data terms which most of
us use to evaluate the Nissan battery. Charge the battery to 100% and drive
until the low battery warning comes on (near your home) and try and maintain
an efficiency greater than 4.5 miles/kWhr. Then report your range.

My 2013 at 3.8K miles had; 262 GIDs, SOH=92%, 60.5 Ahr. Now at 15.5K miles
the battery has about 56 Ahr.

 

[tkdbrusco]

My readings at 6,000 mi on a 2015 S are lower than I expected as well, but not this low. And I was getting 292 gids until about 2,000 miles. Now my high 100% is 279 gids and my SOH is at 89% HX 90.5% and AHr 58.8. Even when new my SOH was still 93%. So I'm not sure how to take this? There are some people with 2015 models that still have 290+ Gids at 10K miles? My guess would be that Nissan isn't going to do anything for you if its within the realm of the battery warranty.

 

[MartinChico]

Date: 01/25/2015
Mileage: 462
1 QC & 18 L1/L2s

GIDs: 283
kWh: 21.9
SOC: 97.4%
SOH: 96%
Hx: 92.59%
Ahr: 58.49
Avg Battery Temp: 59.8 F

I'm a little worried about the degradation I'm seeing in this battery in only 1 month / 500 miles.

 

[tkdbrusco]

Date: 01/25/2015
Mileage: 462
1 QC & 18 L1/L2s

GIDs: 283
kWh: 21.9
SOC: 97.4%
SOH: 96%
Hx: 92.59%
Ahr: 58.49
Avg Battery Temp: 59.8 F

I'm a little worried about the degradation I'm seeing in this battery in only 1 month / 500 miles.

Is this the first reading you took? What was it at when it was brand new? As I said above, mine stayed at 292 for about 1500mi and then tapered off. It seems fairly stable now at 278 or so. People are saying that you can expect about 5% degredation in the frist 5000mi and then it settles? Who knows? Cold temps could also be your culprit. Do you know how long your car sat on the lot before you bought it?

 

[mkjayakumar]

2015 Leaf SL Manufacture date June 2014 - Leased Dec 14 2014 : Mileage: 1040 Charged: 3 QC 80 L1/L2

It appears that your Leaf sat on the lot for nearly 6 months, who knows at what State of charge. That could partially explain your 268 Gid reading at 100%. Definitely on the low side for 1k miles on the odo.

Can you please update your location in the profile? degradation over a period of time widely varies depending on your location and how hot it gets in summer.

 

[keydiver]

IMHO, I think a lot of people are getting way too concerned about 2015 capacity loss in the first few months. Now that we have LeafSpy, its easy to micro-analyze the SOH. We know that all Li-ion batteries will lose ~5% in the first year, so that may be all that you are seeing, but there is also always the possibility that the battery was not maintained properly on the dealer lot. I think that all of the important 2015 data is going to be in the 18-24 months of ownership, especially in hot climates.

 

[RegGuheert]

We know that all Li-ion batteries will lose ~5% in the first year,...

Do we? While I actually believe that, there is at least one 2014 LEAF with full capacity after 15 months, 20,000 kilometers and 150 QCs with full capacity reported by the BMS:

An AHr of 62.2 after 19K miles (almost the same as mine) after 12 months is not bad at all for Texas Leaf.

Can you give a GID reading at 100% ?

here are my readings from oct.2013 and jan.2015
my 100% gids are 284

http://www.goingelectric.de/forum/nissan-leaf-batterie-reichweite/wieviel-gids-hat-euer-leaf-t2232-260.html#p160889" onclick="window.open(this.href);return false;

Wow! 15 months, 20,000 km and 150 QCs have INCREASED your battery capacity (as calculated by your BMS) from 61.55 Ah to 67.07 Ah!

It seems the more data we get, the less clear the LEAF's battery degradation becomes.

 

[tkdbrusco]

Hmmm... my numbers rose? Why?

So as of last month at about 5,000 miles, my highest reading was 279 Gids, 88.9 SOH 90.6HX and 58.7 Ahr.

This morning I take a reading at 6,000 miles and I get the following... and to be clear the charging lights were still blinking even though the car was at 100%, so there was probably still some cell balancing going on.

282 Gids
21.85 kwh
97.27% SOC
90.29 SOH
92.24 HX
59.82 Ahr
65.4 avg temp
Guess o meter reading 109 miles of range

This is the first time since I've bought the car that I've seen numbers reverse. This of course is good news for me because I was worried about some rapid declines I was experiencing. Anyone else ever see numbers switch directions? As far as charge behavior, I made a few changes over the past 2000 miles. (1) Try not to charge over 90% unless absolutely necessary. (usually about 85%) (2) Charged up to 100% twice before taking this reading. This reading was on the second day at 100% charge.

 

[tkdbrusco]

Anyone else noticing a trend here that the people who have the highest capacities on their 2015s are charging in ways that we would have deemed bad for prior batteries? They are QCing all the time, charging to 100% etc...?

 

[Reddy]

Anyone else noticing a trend here that the people who have the highest capacities on their 2015s are charging in ways that we would have deemed bad for prior batteries? They are QCing all the time, charging to 100% etc...?

I am (and similar threads on the older batteries) and it kinda bums me out. I think what is says is: Drive the hell out of the car, driving from full to empty, and then charging as much as possible. TaylorSFGuy is probably close to 150,000 mi by now on his 2011. I have less than 30,000 mi on mine, and I'm starting to doubt I'll make 100,000 mi on mine. So much for babying the battery.

 

[Moof]

Anyone else noticing a trend here that the people who have the highest capacities on their 2015s are charging in ways that we would have deemed bad for prior batteries? They are QCing all the time, charging to 100% etc...?

Live somewhere cooler, then don't drive more then you have to, everything else is a distant secondary issue for battery wear.

 

[TheGiz05]

Another 2015 checking in....

Date: 1/28/2015
Mileage: 1565
4 QC & 78 L1/L2s

GIDs: 272
kWh: 22.96 (calculated, forgot to record this from LeafSpy)
SOC: 96.90%
SOH: 93%
Hx: 89.03%
Ahr: 58.01
Avg Battery Temp: 66.5 F

Mine was manufactured in August 2014 but I didn't get it until December, so who knows how it was treated at the dealer in the meantime. Plus it probably sat out in the sun all of September, which is usually one of the hottest months of the year in Houston. Now that I've got my home L2 installed, my charging routine should be steady (probably once in the middle of the week since I have a short commute and 2-3 charges on the weekend, all to from usually around 20-30% to 100%), so it will be interesting to see if the numbers vary any or continue to decrease. It will also be interesting to see how big a hit happens this summer.

 

[DougWantsALeaf]

Though this is ancillary, and a single datapoint, my battery seemed to stop degrading one I started charging to 100 (rather then 80), and generally only recharged when 50 or less.

My gids are at 256, exact same since last year at this point. 9k miles on my 13.

 

[dm33]

Though this is ancillary, and a single datapoint, my battery seemed to stop degrading one I started charging to 100 (rather then 80), and generally only recharged when 50 or less.

My gids are at 256, exact same since last year at this point. 9k miles on my 13.

I've been very impressed with our 2nd 2013. We always charge to 80% and have only charged to 100% a few times. We have over 19k and we're over 60Ahr. SOH is 92%, Hx is about the same 91%.
We had an earlier 2013 that at 6k miles had degraded more than our newer 2013 has after 19k miles.

 

[Nhinman]

Giving my 2015 data for the first time:

Date: 1/28/2015
Mileage: 2012
1 QC & 85 L1/L2s

GIDs: 290
kWh: 22.5
SOC: 96.9%
SOH: 99%
Hx: 95.68%
Ahr: 61.90
Avg Battery Temp: 76.3 F


I picked up my Leaf on Nov 1, 2014, so it really hasn't been
through any hot weather yet. I don't baby the battery, I always
charge to 100%. I don't try to drive very conservatively, my
mileage is only 3.1 -3.2 miles/KW. As long as I can make it back to
my charging station I don't care.

 

[Stoaty]

TaylorSFGuy is probably close to 150,000 mi by now on his 2011. I have less than 30,000 mi on mine, and I'm starting to doubt I'll make 100,000 mi on mine. So much for babying the battery.

That's because calendar loss is significant, battery degrades whether you drive it or not.

 

[BooKittyLeaf]

Anyone else noticing a trend here that the people who have the highest capacities on their 2015s are charging in ways that we would have deemed bad for prior batteries? They are QCing all the time, charging to 100% etc...?

Yup - I am noticing that same trend.

I dont have Leaf Stat yet for my iPhone - still trying to fins a good OBD wiFi plugin - any recommendations? Like to have one that I can turn on/off (power management)

Anyway,

I have a 2015 SV - Black - in Phx AZ no less
Mfg in Aug 2014
Took Delivery Jan 10
Sat on dealer lot with who knows what SOC for how long.

Even with a 5 mile /Kwh economy reading , a 100% charge gets me about 87 miles (GOM)
Wife & I have been driving conservatively, Eco Mode, B mode & easy acceleration, etc.... charging to 0%, recharge at 40% avg, .....
My math would suggest 100+ should at least show on the GOM at a 5.0 mile/kwh - for whatever that s worth.
Im shooting for a direct % charge -to-Miles, or, 100% = 100 miles

Maybe the batteries are still settling in - (1,000 miles so far)

We both use the car daily for work, so lots of driving.

MY NEW PLAN:
I think Im just gonna L2 charge to 100% every day, every time I charge, whenever I can ( I just put in a L2/30a)
Drive it hard like an ICE to really work the batteries & cycle them.... see what happens. Maybe the batteries need to be "used harder" than we were when we were being 'Gentle" with them.

If the Batteries crap out in a year to two, then maybe its just not time for BEV yet & its gone at end of my lease. If the battery stays strong - life is GOOD!

Either way, I dont want a car I have to treat like a frail princess - It should be able to handle being "Driven" or its basically just an expensive toy to stress out over while I end up using my ICE instead while the Cool Electric Leaf sits there & deteriorates.

We really like the Leaf, and have high hopes for it!

 

[tkdbrusco]

Anyone else noticing a trend here that the people who have the highest capacities on their 2015s are charging in ways that we would have deemed bad for prior batteries? They are QCing all the time, charging to 100% etc...?

Yup - I am noticing that same trend.

I dont have Leaf Stat yet for my iPhone - still trying to fins a good OBD wiFi plugin - any recommendations? Like to have one that I can turn on/off (power management)

Anyway,

I have a 2015 SV - Black - in Phx AZ no less
Mfg in Aug 2014
Took Delivery Jan 10
Sat on dealer lot with who knows what SOC for how long.

Even with a 5 mile /Kwh economy reading , a 100% charge gets me about 87 miles (GOM)
Wife & I have been driving conservatively, Eco Mode, B mode & easy acceleration, etc.... charging to 0%, recharge at 40% avg, .....
My math would suggest 100+ should at least show on the GOM at a 5.0 mile/kwh - for whatever that s worth.
Im shooting for a direct % charge -to-Miles, or, 100% = 100 miles

Maybe the batteries are still settling in - (1,000 miles so far)

We both use the car daily for work, so lots of driving.

MY NEW PLAN:
I think Im just gonna L2 charge to 100% every day, every time I charge, whenever I can ( I just put in a L2/30a)
Drive it hard like an ICE to really work the batteries & cycle them.... see what happens. Maybe the batteries need to be "used harder" than we were when we were being 'Gentle" with them.

If the Batteries crap out in a year to two, then maybe its just not time for BEV yet & its gone at end of my lease. If the battery stays strong - life is GOOD!

Either way, I dont want a car I have to treat like a frail princess - It should be able to handle being "Driven" or its basically just an expensive toy to stress out over while I end up using my ICE instead while the Cool Electric Leaf sits there & deteriorates.

We really like the Leaf, and have high hopes for it!

I bought the ELM327 on amazon. Its ok, but the wifi sometimes need to be shut on and off a couple times to get it to work. If I bought another one, I'd buy the shorter one because a few times I've forgotten and left it plugged in and then kicked it with my foot while driving.

For what its worth, our average is 4.7mi/kwh and we are usually at or above 100mi on the GOM (108 a few days ago). The GOM will be based on your most recent drive, so some of the 100% GOM guess comes from what your journey home looks like. My co-worker (also owns a 2015) frequently gets 110-115 miles on his GOM, but he also lives in Santa Cruz and commutes to San Jose, so his last 10 miles home is a downhill in B mode, then he plugs in and the GOM the next morning thinks he will be going downhill again. My most recent 100% reading on my leaf stat app was 282 and that was with 6100mi. I will also note that I have been babying the battery for the past 3000mi and really trying not to charge to 100% unless necessary and when doing so, not letting it sit at that for long. By doing this, our last reading actually improved in Gids, SOH, HX, and AHR. I do think that doing 100% charges every so often and letting it sit for a few hours does some battery rebalancing. We bought, didn't lease, so I'm a bit more worried than you when it comes to battery life.