2015: Battery Data Report @ 100% Charge

[jwalbaum]

Ahr - Hx - GIDs - L1/L2 - Temp F - Miles - Date
63.98 - 99.87 - 291 - 152 - 36.25 - 3175 - 11/6/2014
64.38 - 100.73 - 292 - 158 - 35.75 - 3287 - 11/7/2014
64.1 - 100.93 - 293 - 196 - 36.5 - 4034 - 11/20/2014
64.38 - 104.34 - 293 - 236 - 40 - 4661 - 12/5/2014
64.24 - 104.24 - 292 - 335 - 36.5 - 6039 - 1/15/2015
64.38 - 104.57 - 292 - 369 - 38.5 - 6694 - 1/31/2015
64.38 - 105.3 - 292 - 448 - 29.1 - 7863 - 3/1/2015
64.38 - 104.25 - 292 - 493 - 58.1 - 8968 - 3/18/2015
64.38 - 101.89 - 292 - 522 - 70.7 - 9617 - 4/2/2015
64.38 - 104.52 - 292 - 538 - 42.75 - 10066 - 4/10/2015
64.38 - 100.36 - 292 - 598 - 72 - 11578.6 - 5/8/2015
64.38 - 100.96 - 292 - 632 - 68 - 12370 - 5/24/2015
64.38 - 99.3 - 292 - 666 - 79 - 13294 - 6/18/2015
64.38 - 98.8 - 293 - 675 - 77 - 13664 - 6/30/2015
64.38 - 99.48 - 292 - 694 - 81.4 - 14251 - 7/16/2015
64.38 - 99.19 - 292 - 714 - 83.8 - 14774 - 8/1/2015
62.39 - 96.35 - 292 - 743 - 72 - 15730 - 8/29/2015
61.32 - 95.4 - 288 - 754 - 82 - 16030 - 9/8/2015
61.68 - 95.31 - 290 - 785 - 80 - 17074 - 9/29/2015
62.24 - 96.17 - 292 - 826 - 65 - 18314 - 10/24/2015
63.17 - 97.32 - 292 - 882 - 52 - 19711 - 11/19/2015
64.38 - 100.27 - 292 - 955 - 46 - 21061 - 12/21/2015
64.38 - 101.37 - 292 - 1049 - 31 - 22625 - 2/8/2016

 

[tkdbrusco]

Just when I'm happy about my "minimal" degradation, some dude from IA or Ireland has to post their nearly perfect stats!

Well here's my stats from California on 2/9/16. Sunny 77 degrees and I just went on a beautiful bike ride on my week off!

 

[o00scorpion00o]

Here's my January 2015 battery report from today.

 

[DNAinaGoodWay]

Now at half way through my 3 year lease, at 18 months, 18k miles, still showing like new and it's cold here.

 

[paulgipe]

These posts are making me envious of 22.6 kWh. Wish I had that. Here's the latest after another L2 charge.

Paul

 

[o00scorpion00o]

This is the Leaf Spy data from a 2014 Irish Leaf I got today.

 

[mayo]

Most recent reading on my 2015 SL, 15,301mi, mfg 9/14

256 Gids
19.8 kwh
97.30 SOC
87 SOH
81.87 HX
54.55 Ahr
62 Degrees

 

[tkdbrusco]

Reading on my 2015 S with 24,111mi

272 Gids
21.08 kwh
97.29 SOC
87.42 SOH
88.85 HX
57.92 Ahr
77.5 degrees

 

[Bufordleaf]

Latest readings from my 2015 S w/QC. Delivered 12/2014 in Buford, GA (near Atlanta).

Miles. 13,522
GIDs. 286
kWh. 22.2
SOC. 97.2
SOH. 97
Hx. 93.88
AHr. 60.81
Temp. 55.3
# QCs. 39
GOM at full. 98

Edited my original post. Listed delivery date as 12/2015 when it was actually 12/2014.

 

[minispeed]

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
Mar 31 '15: KM - 26 786, Soh - 100%, Charges - 65 QC 647 L1/L2, Gidds - 292, kWh - 22.6, Soc - 97.1%, Hx - 111.18%, Ahr - 64.38
June 25 '15: KM - 36 038, Soh - 100%, Charges - 67 QC 814 L1/L2, Gidds - 292, kWh - 22.6, Soc - 97.4, Hx - 99.62, Ahr - 64.38 / 62.68
Aug 31 '15: KM - 43441, Soh - 99%, Charges - 90 QC 939 L1/L2, Gidds - 291, kWh - 22.6, Soc - 97.5, Hx - 95.40%, Ahr - 61.73 / 60.19
Sep 7 '15: KM - 44171, Soh - 100%, Charges - 91 QC 948 L1/L2, Gidds - 292, kWh - 22.6, Soc - 97.2, Hx - 98.21%, Ahr - 63.90 / 62.14
Sep 25 '15: KM - 46180, Soh - 98%, Charges - 95 QC 980 L1/L2, Gidds - 288, kWh - 22.3, Soc - 97.4, Hx - 98.21%, Ahr - 61.10 / 59.53
Oct 4'15: KM - 47258, Soh - 100%, Charges - 100 QC 1000 L1/L2, Gidds - 291, kWh - 22.6, Soc - 97.1, Hx - 97.02%, Ahr - 62.93 / 61.09
Nov 15 '15: KM - 51224, Soh - 99%, Charges - 107 QC 1083 L1/L2, Gidds - 292, kWh - 22.6, Soc - 97.4, Hx - 95.91%, Ahr - 62.04 / 60.45
Feb 28 '16: KM - 60257, Soh - 99%, Charges - 111 QC 1337 L1/L2, Gidds - 292, kWh - 22.6, Soc - 97.1, Hx - 96.21%, Ahr - 62.08 / 60.28
Almost at 40K miles!

Well it's been about 6 months with my wife driving the car so the QC have slowed, also the Nissan Canada quick charge was out of order for about 2 months too. Still holding pretty strong, I had some 98% and 100% SOH readings when I checked through the winter but it wasn't at a full charge for me to get gids too.

 

[LeafMuranoDriver]

Feb 28 '16: KM - 60257, Soh - 99%, Charges - 111 QC 1337 L1/L2, Gidds - 292, kWh - 22.6, Soc - 97.1, Hx - 96.21%, Ahr - 62.08 / 60.28
Almost at 40K miles!

Still holding pretty strong,

Couldn't get any better!

I'm definitely jealous of all of the cars that are still at top stats.

 

[tkdbrusco]

I'm with you as well! I look at mine after 25K miles and get happy that I have 273 Gids and then these people post their 292 readings...

 

[SparkyEV]

I've been reading through this thread (very educational and entertaining!) and I think it's important to point out that the values displayed by apps like Leaf Spy were reverse engineered from the raw byte stream on the LEAF's EV-CAN bus by an impressive group of engineers on this forum. While they have been successful at identifying the messages and data fields, the true meaning of some of these fields like SOH, AHr, GIDs, and Hx are not completely understood. These names were invented by this community based on what they seemed to represent, they do not come from the car. In particular, the 'x' in Hx stands for Xfactor because of the sometimes contradictory information that it gives.

That said, smart people have been looking at these numbers over long periods of time for many vehicles and the understanding is improving. There seem to be three trends that affect the SOH/AHr/Hx/GID group of values in the newer models. One changes on long time scales (months/years+) and is an indicator or permanent capacity loss due to battery degradation. The second is seasonal patterns due to temperature. The third changes on much shorter time scales and is affected by things like charging and usage patterns. These last two changes are not permanent because they represent inaccuracies in the battery computer's estimates, not real physical changes in the battery (you could argue that cold has a physical effect, but it is temporary unless extreme). This is why people are not seeing real (measuring from the wall to charge from turtle) range losses correlated with these short-term swings.

In general, estimating the maximum and current capacity for a battery is very difficult because there are so many variables involved and capacity cannot be measured (well) directly, you need to meter the coulombs. The LEAFs battery computer (BMC/LMC) does a pretty good job considering, but these numbers can still bounce around ~10% without representing a permanent loss. When you charge to 100%, the computer gets better information about where the 'top' and is therefore able to come up with a better estimate. Regular charging to 100% is not physically helping your battery, it's just feeding better data to the computer. Similarly, the numbers may drop if you let your car sit for a few days at 50% because the estimate is getting worse, not because it's bad for your battery.

Permanent damage comes from age, heat over time, and time spent at very high or low SOC. Don't assume you have any permanent damage unless your stats change significantly over time and don't sweat changes over short periods. Don't leave your car at 100% for very long and keep it in the shade if possible (although Lizard may be proving that unnecessary). Otherwise, drive and enjoy. My 2016 LEAF is only a week old and my AHr and Hx is already down by almost 2% during that time. I'm not worried.

 

[paulgipe]

Sparky EV,
Thanks for that astute post. It puts all the battery data in perspective for us who have seen their stats drift lower. We're now entering another warm season and it will be interesting to see how the stats respond. By August I'll have a full year with LeafSpy.

Paul

 

[Evoforce]

Lizard packs are Not holding up better in hotter climates and IMO I suspect 2016's will not fair better against degradation but at least the SV-SL start out with more capacity.

 

[tkdbrusco]

Clearly most people aren't posting on this thread anymore. I stood in line at 4AM to get one of the early Tesla Model 3's so hopefully I won't need to worry much about my Leaf capacity other than trying to keep 11/12 bars for better resale in 2 years, maybe if I'm lucky I'll get $9K for my 2015.

Anyways, here's the most recent numbers for my 2015 S, MFG 4/14, so it is now officially 2 years old with 26,400 mi.

269 GIDS
20.85 Kwh
97.38 SOC
86.3% SOH
87.3% HX
57.18 AHR
70.8 degrees

Not sure how to go about predicting a bar drop, cause most people are saying 54 AHR and about 240 GIDS.

 

[EVFuture]

2015 SV w/QC+LED, MFG 8/15

Miles - Date - Ahr - Hx - GIDs - L1/L2 - QCs - Temp F
20,121 - 4/4/2016 - 59.02 - 90.92 - 277 - 625 - 41 - 77.3
17,907 - 2/14/2016 - 60.96 - 94.13 - 287 - 567 - 37 - 61.9
16,468 - 1/17/2016 - 58.67 - 92.22 - 276 - 514 - 36 - 60.5
14,674 - 12/8/2015 - 62.43 - 97.19 - 292 - 448 - 35 - 73.6

 

[LeafMuranoDriver]

Date: 4/1/2016
Mfg: 01/2015 Pur: 05/2015
Mileage: 7,513
28 QC & 181 L1/L2s

GIDs: 262 (89.7%)
kWh: 20.3
SOC: 97.5%
SOH: 99%
Hx: 83.95%
AHr: 55.55
Temp: 74.5

My stats have been hanging around 260 to 267 GIDs and 20.2 to 20.7 kWh.

 

[tkdbrusco]

Date: 4/1/2016
Mfg: 01/2015 Pur: 05/2015
Mileage: 7,513
28 QC & 181 L1/L2s

GIDs: 262 (89.7%)
kWh: 20.3
SOC: 97.5%
SOH: 99%
Hx: 83.95%
AHr: 55.55
Temp: 74.5

My stats have been hanging around 260 to 267 GIDs and 20.2 to 20.7 kWh.

so strange that your SOH is so high relative to other numbers. Also curious as to whether you drop a bar at the typical 54 AHR as other years. At 54 AHR, you'd still be around 255 Gids or so, which is typically much higher than prior year's first bar drops.

 

[LeafMuranoDriver]

so strange that your SOH is so high relative to other numbers. Also curious as to whether you drop a bar at the typical 54 AHR as other years. At 54 AHR, you'd still be around 255 Gids or so, which is typically much higher than prior year's first bar drops.

The high SOH confuses me as well.

I assume the first bar drop should be around 53-54 Ahr like the other 24 kWh batteries. I haven't seen lower than 55 yet.
I wonder if I never did the "test" (driving 40+ extra miles/day) to bring the stats up if the stats would have kept going down.