The 40KWH Battery Topic

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As of today, my 2018 SV (with options), 15K miles, is displaying 168 Miles.

Of course, I now realize that means mebe 100 IRL, but still good.
 
As of today, my 2018 SV (with options), 15K miles, is displaying 168 Miles.

Of course, I now realize that means mebe 100 IRL, but still good.
 
danrjones said:
danrjones said:
Latest stats for today:

SOH: 87.23
AMPhr: 100.7
Hx: 102.26

10,059 miles

I should be close to my next three month update, if there is one.

Finished my 3 month update.
It was small, but at least it was up this time.

Sitting at:

SOH: 87.90
AMPHr: 101.47
Hx: 102.33

how long ago was the replacement? 18 months?
 
DaveinOlyWA said:
danrjones said:
danrjones said:
Latest stats for today:

SOH: 87.23
AMPhr: 100.7
Hx: 102.26

10,059 miles

I should be close to my next three month update, if there is one.

Finished my 3 month update.
It was small, but at least it was up this time.

Sitting at:

SOH: 87.90
AMPHr: 101.47
Hx: 102.33

how long ago was the replacement? 18 months?

What replacement? I think you have me confused for another. This is a 2018. Original.
 
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3 years + 3 months. No significant adjustment at the three month mark. It has been hotter than normal here in Atlanta so the battery temperature has been remaining high 80 - 85+. I keep the charge level between 30 - 70%, charging early morning when it's the coolest. I average 4.5 miles per KW, so I'm easy on the driving part too. I bought this car with the intention for it to last 10 years with a 100 miles range at the end of 10 years. At the current battery loss rate I should just make it.

Of course that is if LeafSpy is telling/getting the truth on the real health of the battery. I would really like to see a documented bar loss with a corresponding LeafSpy readout.
 
SalemCat said:
As of today, my 2018 SV (with options), 15K miles, is displaying 168 Miles.

Of course, I now realize that means mebe 100 IRL, but still good.

Huh??? Maybe in 28F weather but I have also seen 168miles on the GOM and have used over 150 of those said miles in a single day so my personal experience is you are being extremely conservative in your range estimation
 
HerdingElectrons said:
SalemCat said:
As of today, my 2018 SV (with options), 15K miles, is displaying 168 Miles.

Of course, I now realize that means mebe 100 IRL, but still good.

Huh??? Maybe in 28F weather but I have also seen 168miles on the GOM and have used over 150 of those said miles in a single day so my personal experience is you are being extremely conservative in your range estimation

It all has to do with what your driving includes. If I don't leave town, 150 is probably doable.
But on the highway, I concur with the previous poster, 100 to 110 is all you will get.
 
rogersleaf said:
rogersleaf said:
rogersleaf said:
At just under 14 months and 25,000 miles

LS stats:
AHr... 107.38
SOH... 93.03%
Hx... 117.59%
SOC... 98.8% and 469 GID
403.72v, cells balanced between 4.204-4.207v
odo... 25,072
18 QC / 652 L2’s
A bit overdue posting the last set of data. Pulled this last week.
I'm at 17 months now, 30,000 miles.
Looks like almost no capacity loss since the last time and GIDs are up by 2, find that hard to believe.
Must have found the fountain of youth.

LS stats:
AHr... 107.35
SOH... 92.99%
Hx... 109.64%
SOC... 99.2% and 471 GID
404.06v, cells balanced between 4.207-4.212v
odo... 30,271
20 QC / 772 L2’s
It's been awhile since posting an update. Now at 24 months and roughly 40,000 miles.
My usage dropped substantially over the Winter due to temporary changes in commuting.

LS stats:
AHr... 104.24
SOH... 90.30%
Hx... 110.65%
SOC... 97.3% and 448 GID (although charged 100% on L2 and shut off on it's own after rebalancing cycle)
403.53v, cells balanced between 4.203-4.205v
odo... 39,968
25 QC / 1008 L2’s
Passing 45,000 miles now... Almost no change since the last reading (SOH actually went up slightly, gained a GID)

LS stats:
AHr... 104.83
SOH... 90.81%
Hx... 105.52%
SOC... 97.0% and 449 GID
403.89v, cells balanced between 4.206-4.209v
odo... 45,159
25 QC / 1124 L2’s
 
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3 years 4 months. Gained almost 1% last month :)
So I'm down about 10% for the 3+ years. Looking at last year I've lost 1.27%, the year before a loss of 0.81%
As I've stated before my goal is to keep this car for 10 years with a 100 mile range still remaining, at the current rate it looks like I'll easily make it.
 
maybe this was already answered so I'm sorry. I am a new Leaf 40kw owner and I'm starting to get to know better the car. Drove a bout 1000 miles / 1500km and I have a question regarding the battery and the buffer.

Leaf is advertised as having a gross battery of 40kwh and 36kwh net capacity. Does anyone knows how the 4kwh buffer are used? I checked leafspy to see cell voltages when I was at 98% SOC and it was about 4.2V shich mean about 100% cell charge. This at least clears the idea that the buffer is not on the top part of the cell capacity.
Maybe it's at the bottom and indeed this buffer always stays charged? If this is true, then it does not help preventing real charge to 100% extending charge cycles and battery life.
 
From what I've observed using LeafSpy is that the vehicle display (not LS) will show a higher SOC when above 50 pct. Therefore, when charged "fully" with vehicle displaying 100 pct, the actual SOC varies between 96 to 98 pct. When the vehicle display drops below 50 pct then LS will report an actual lower SOC. Therefore, when one gets to even 5 pct or lower, the actual SOC is higher by a several pct. The LEAF will never let one discharge the pack completely either.

As for usable pack capacity I seem to recall from earlier posts it's closer to 38 kWh, leaving only a 2 to 3 kWh actual buffer to protect the pack.
 
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