2015: Battery Data Report @ 100% Charge

DaveinOlyWA said:

MartinChico said:

12/28/14 / 93mi / 9 L1/L2s & 1 QC:
96.4% SOC / 289 GIDs / 22.4 kWh / 63.28 AHr / 100% SOH / 97.45% Hx

01/31/15 / 652mi / 24 L1/L2s & 1 QC / ~3.9 mi/kWh (for the past month):
97.2% SOC / 281 GIDs / 21.8 kWh / 59.76 AHr / 96% SOH / 92.14% Hx

02/28/15 / 1,477mi / 54 L1/L2s & 1 QC / 4.4 mi/kWh (for the past month):
97.3% SOC / 281 GIDs / 21.0 kWh / 59.72 AHr / 96% SOH / 92.08% Hx

I was really disappointed when my GIDs dropped to 281 after the first month, but it's leveled off, so maybe it's not as bad I first thought.

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I would be more concerned with the ahr remaining. what is your GIDs set at? your ahr remaining is at my level (I average between 20.8 and 21.2) and I have over 19,000 miles

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I would agree that your battery is doing very well at 19,000 miles. My last reading at 7500mi on my 2015 is 21.70kwh, which is pretty good for 7500 miles. All of my numbers have increased since we've changed our charging habits. We've been charging it at work after lunch to 100%, so it finishes within an hour of leaving for home. The drive home brings it down to about 67%, then we drive it back to work in the morning and arrive with about 32%, plug in after lunch and repeat. The cycling with not much time sitting at 100% seems to be working very well.

lorenfb said:

DaveinOlyWA said:

MartinChico said:

12/28/14 / 93mi / 9 L1/L2s & 1 QC:
96.4% SOC / 289 GIDs / 22.4 kWh / 63.28 AHr / 100% SOH / 97.45% Hx

01/31/15 / 652mi / 24 L1/L2s & 1 QC / ~3.9 mi/kWh (for the past month):
97.2% SOC / 281 GIDs / 21.8 kWh / 59.76 AHr / 96% SOH / 92.14% Hx

02/28/15 / 1,477mi / 54 L1/L2s & 1 QC / 4.4 mi/kWh (for the past month):
97.3% SOC / 281 GIDs / 21.0 kWh / 59.72 AHr / 96% SOH / 92.08% Hx

I was really disappointed when my GIDs dropped to 281 after the first month, but it's leveled off, so maybe it's not as bad I first thought.

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I would be more concerned with the ahr remaining. what is your GIDs set at? your ahr remaining is at my level (I average between 20.8 and 21.2) and I have over 19,000 miles

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You have an exceptional battery with 62 Ahr at 19K miles. My Leaf was leased the same month and the
battery now has only 56 Ahr at 17K miles.

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location makes all the difference. I have 19,000 miles on my 2013 LEAF and still over 63 ahr

+1, at 7 months, 7k miles, still no sign of degradation.

DaveinOlyWA said:

location makes all the difference. I have 19,000 miles on my 2013 LEAF and still over 63 ahr

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In some cases yes, but here by the coast the temp is never above 75 - 80F. So temp can't fully explain the
delta in Ahr as many would argue.

lorenfb said:

DaveinOlyWA said:

location makes all the difference. I have 19,000 miles on my 2013 LEAF and still over 63 ahr

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In some cases yes, but here by the coast the temp is never above 75 - 80F. So temp can't fully explain the
delta in Ahr as many would argue.

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I realize some consider the range of the LEAF inadequate but your statement seems to imply that air temps and radiant temps are equal which I would debate. That you never leave the coast which is possible, etc.

Sorry but I lived "near" (Irvine) the coast and found just a few miles inland on the overly developed region aka Orange County meant a several degree temperature rise from the coast. I guess we should have focused on developing white pavement or something

DaveinOlyWA said:

Sorry but I lived "near" (Irvine) the coast and found just a few miles inland on the overly developed region aka Orange County meant a several degree temperature rise from the coast. I guess we should have focused on developing white pavement or something

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And you know my driving environment, right?

12/30/14 - 3/8/15 - ~1,800 miles - GIDS 292 SOC: 97.44 SOH:97.17 HX:100.48 Ahr:64.38 Temp: 42F

DaveinOlyWA said:

Sorry but I lived "near" (Irvine) the coast and found just a few miles inland on the overly developed region aka Orange County meant a several degree temperature rise from the coast. I guess we should have focused on developing white pavement or something

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CA is big on microclimates. When I say "Bay Area" to folks, they automatically assume my summers are drenched in fog and that we're in that climate nirvana where you never need to run the AC nor heat outside of a few days a year. The more diligent will look up weather data online and invariably will get numbers for Napa, CA which also do not reflect my home or work locations. I have bicycled home enough times in 104F heat to where I wish people could just take my word for it when I say it gets BLOODY HOT. But alas, we're all skeptics nowadays.

Definitely the entire L.A. Basin is a huge concrete heat-sink. The sea breezes help fairly well inland at night but during the day you've got to be darned close to the ocean to feel the benefit.

Nubo said:

CA is big on microclimates. When I say "Bay Area" to folks, they automatically assume my summers are drenched in fog and that we're in that climate nirvana where you never need to run the AC nor heat outside of a few days a year. The more diligent will look up weather data online and invariably will get numbers for Napa, CA which also do not reflect my home or work locations. I have bicycled home enough times in 104F heat to where I wish people could just take my word for it when I say it gets BLOODY HOT. But alas, we're all skeptics nowadays...

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When I see your "Vallejo" I think "HOT". But, then, I lived in Tiburon as a child and the microclimates in the Bay Area are familiar to me.

dgpcolorado said:

Nubo said:

CA is big on microclimates. When I say "Bay Area" to folks, they automatically assume my summers are drenched in fog and that we're in that climate nirvana where you never need to run the AC nor heat outside of a few days a year. The more diligent will look up weather data online and invariably will get numbers for Napa, CA which also do not reflect my home or work locations. I have bicycled home enough times in 104F heat to where I wish people could just take my word for it when I say it gets BLOODY HOT. But alas, we're all skeptics nowadays...

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When I see your "Vallejo" I think "HOT". But, then, I lived in Tiburon as a child and the microclimates in the Bay Area are familiar to me.

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And I work in Concord, where it's hotter still. And I have a suspicion that Buchanan Field is in collusion with the Chamber of Commerce. During the hottest spells their thermometer invariably ends in ".9". Gas-station psychology? :lol:


* - this is a joke. Airports must report accurate temps so that pilots can compute accurate take-off rolls. I'm sure the fields reporting is accurate.

Most recent battery numbers. 8250mi on my 2015 S. All numbers are up from last month. Could be charging behavior, warmer temps? who knows? My pack is about a year old now (mfg 4/14) so if going through one summer and 9 months of ownership gets me a 2% decrease, I think that's an acceptable rate.

285 Gids
22.09 kwh
97.16% SOC
91.36 SOH
93.41% HX
60.53 Ahr
73.9 avg temp

How's this for battery health ?

Met this person at the ChaDeMo Thursday night.

1 year old Leaf.

I'm assuming that's a 2014 model. That's also a lot of QCs. I've noticed with mine that cycling through and charging up to 100% (but not leaving it there too long) has actually made my numbers climb? I'm starting to think that the days of babying it are done. I've yet to QC mine out of fear that it might degrade it, but I guess I shouldn't be so afraid.

Yes it's a 2014.

I was highly impressed to say the least. I don't know if they've changed the chemistry or if this is a result of the moderate Irish climate, I would have expected some degradation with 544 quick charges !

I notice that in my 2015 , 7 weeks old, fast charging from 20% to 60% can raise the temp to 18 degrees. I can't see this doing much harm. Not at the cool winter temps.

I had a loaner Leaf last summer and I observed the battery temp go from 22 Degrees C , that's 71.6 F. to 35 Deg C, 95 F.

This was the chaps 3 rd quick charge at this point when I pulled the data from his Leaf, the battery was around 35 Deg C, 95 F.

He told me he does this journey about once a month. I will probably be doing this mileage per year, hopefully less , I only need a 10-15 min DC from about 20-60%.

What I notice is that the battery charges a lot faster from 20-40% than 45-80%.

It's a shame the battery can't charge at 100-120 amps for the duration of a charge.

We have the Diesel for the long trips because even though we have a pretty good DC network here, I don't want to risk having to queue at a charger and perhaps adding 1-2 hrs to a long trip. The leaf does 95% of my driving and I'm happy with that.

We have a pretty robust QC network in silicon valley, but they are always so packed that they can't be reliable. I've never needed to push the limits of the charge much so I have't used them.

There is only one location I know that have 2 QC's here together. The Electricity network responsible for installing the chargers have said they will install 2 at the busiest locations but I have my doubts.

Date: 3/18/2015
Mileage: 8968
0 QC & 493 L1/L2s

GIDs: 292
kWh: 22.6
SOC: 97.2%
SOH: 100%
Hx: 104.25%
Ahr: 64.38
Avg Battery Temp: 58F

Manufacture date: 8/14 Lease date: 9/13/2014

2015 SV w/ QC+LED
Date: 3/19/2015
Mileage: 2839
18 QC & 92 L1/L2s

GIDs: 292
kWh: 22.6
SOC: 97.2%
Ah: 62.47
SOH: 100%
Hx: 99.93%
AHr: 64.38
Avg Battery Temp: 70.8 F (Generally 5 bars at night, 6 during the day, never above/below)

Manufacture date: 8/14 Purchase date: 12/23/2014

Update on my Battery Numbers - might find interesting battery behaviors
Leaf was built 8/22/14
I took delivery 01,22,15
so car sat on lot for about 4 months in Arizona heat, probably at high rate of charge - 80-100$? and had 65 miles on it (in 4 months)

my first readings when I started using it, at 100% were disappointing for a new 2015 Leaf with Lizard Battery:
OD: 368
GIDS: 268
KwH: 20.77
SOC: 97.25
SOH: 86.10
HX: 87.0
AH: 57.04

The numbers hovered around the same for a while. I was concerned I had a bad battery. Contacted the Nissan and the Dealer to do battery test, and from recommendations from this forum to have CVLI test as well.
Nissan confirmed and the Dealer did both tests. Results were "GOOD BATTERY"
Battery test didn't show anything more than what the dash display shows, and the CVLI showed nothing more than LeafSpy shows - however, the Dealer did the CVLI at 100% charge - which I thought was odd since it is supposed to be dome at LOW battery charge to spot cell indifference's??
Leaf Spy tells me all cells are good at a low charge (2%).

So....

The more we used the car, the better the numbers started getting.
We drive about 50 miles a day down to a 40-50% charge (on the dash). We charge every night back to 100% and it sits at full charge for up to 3 hours at a time. We dont do anything special. Sometimes Ill drive it down to 20% before charging - but we dont baby the battery at all.

After about a month & a half, here are the numbers:

OD: 1,575
GIDS: 281 (up 13)
KwH: 21.8 (up 1.03)
SOC: 97.00
SOH: 96.0 (up 9.9)
HX: 92.25 (up 5.25)
AH: 59.83 (up 2.79

So it would appear that the battery likes to be used and cycled as that keeps the health up and the numbers higher.

To further support that thought, I noticed these readings last two weeks.
My wife took a week off from work, so she wasnt using the car - so that means less miles & less charging, to the point where I would drive it to 40% +/- before charging which took 3 days or so -
much less charging (2x a week vs daily)

the numbers went down almost immediately that week:

OD: 1,715
GIDS: 275
KwH: 21.31
SOC: 97.18
SOH: 94
HX: 90.34
AH: 56.98

The next week we were back to the regular driving & daily charging cycles and the numbers went right back up to the highest ever so far despite a slighly lower SOC - most notable is the SOH increase:

OD: 2,020
GIDS: 285
KwH: 22.1
SOC: 96.9
SOH: 97
HX: 93.73
AH: 60.72

the last three charges to 100% are all relatively the same as above - so it seems to be holding at those numbers... for now.

So, appears the batter is not as bad as I thought

Im my experience with a 2015 S/QC model. Now at about 9000 miles, the battery really likes to be cycled through. 100%-30% and the numbers tend to peak. I'm at about 285 Gids at 100% with this behavior. During the winter it dropped as low as 273, when it sits for extended periods of time, the same thing. 285 Gids at 9K miles and I'm happy.