[Yinzer]

I presume that a number of users now have the open-source battery pack report downloader and can provide capacity reports. In the interest of seeing exactly how much the Smart ED battery packs degrade, I think that it would be a good idea to post our reports. Moderator, can this be made sticky?

A bit of background-

My Smart ED went into service April 18 2015. Typically driven 30 mi/45km per day and 80 percent of the time is recharged before going below 50% SOC.

Climate: July average max/min 29C/17C January max/min 1C/-6C Extremes over past 3 years to 35C to -24C.

Latest report:

Battery VIN: WMEEJ9AA4FK830073
Time [hh:mm]: 22:50, ODO : 42652 km
-----------------------------------------
Battery Status : OK

Battery Production [Y/M/D]: 2014/9/16
Battery-FAT date [Y/M/D]: 2014/9/16
Rev.[Y/WK/PL] HW:2014/7/0, SW:2014/18/0
-----------------------------------------
SOC : 55.0 %, realSOC: 58.5 %
HV : 349.6 V, -1.28 A, -0.45 kW
LV : 12.2 V
-----------------------------------------
CV mean : 3743 mV, dV = 18 mV
CV min : 3728 mV
CV max : 3746 mV
OCVtimer: 4476 s
-----------------------------------------
Last measurement : 4 day(s)
Measurement estimation: 0.751
Actual estimation : 0.653
CAP mean: 18266 As/10, 50.7 Ah
CAP min : 17799 As/10, 49.4 Ah
CAP max : 18074 As/10, 50.2 Ah
-----------------------------------------
HV contactor state ON, low current: 2 s
Cycles left : 292729
of max. cycles: 300000
DC isolation : 64605 kOhm, OK
-----------------------------------------
Temperatures Battery-Unit /degC:
module 1: 15.7, 16.7, 16.1
module 2: 15.9, 16.9, 16.2
module 3: 15.5, 16.8, 15.8
mean : 16.2, min : 15.5, max : 16.9
coolant : 14.4
-----------------------------------------
# ;mV ;As/10
01;3746;18487
02;3741;18398
03;3744;18310
04;3744;18398
05;3744;18398
06;3745;18398
07;3744;18443
08;3745;18398
09;3745;18354
10;3744;18354
11;3744;18354
12;3744;18266
13;3744;18354
14;3744;18354
15;3744;18354
16;3745;18354
17;3745;18398
18;3744;18354
19;3744;18398
20;3744;18354
21;3745;18266
22;3742;18222
23;3744;18266
24;3743;18222
25;3744;18266
26;3744;18222
27;3746;18398
28;3745;18222
29;3744;18354
30;3743;18266
31;3744;18222
32;3738;18443
33;3745;18398
34;3745;18310
35;3744;18310
36;3745;18310
37;3745;18398
38;3744;18354
39;3746;18487
40;3744;18222
41;3745;18354
42;3744;18222
43;3746;18487
44;3745;18354
45;3744;18310
46;3744;18266
47;3744;18354
48;3744;18222
49;3743;18354
50;3744;18222
51;3743;18222
52;3743;18222
53;3745;18310
54;3743;18266
55;3744;18354
56;3743;18266
57;3744;18310
58;3744;18310
59;3729;18354
60;3743;18310
61;3745;18310
62;3743;18266
63;3744;18354
64;3743;18266
65;3745;18398
66;3746;18310
67;3745;18443
68;3745;18443
69;3746;18532
70;3744;18354
71;3745;18487
72;3744;18354
73;3744;18398
74;3745;18354
75;3746;18443
76;3744;18266
77;3745;18354
78;3744;18354
79;3744;18398
80;3744;18354
81;3744;18310
82;3743;18266
83;3745;18310
84;3743;18266
85;3744;18310
86;3744;18222
87;3744;18398
88;3743;18266
89;3744;18487
90;3744;18398
91;3745;18398
92;3743;18310
93;3744;18398
-----------------------------------------
Individual Cell Statistics:
-----------------------------------------
CV mean : 3744 mV, dV= 17 mV, s= 1.91 mV
CV min : 3729 mV, # 59
CV max : 3746 mV, # 1
-----------------------------------------
CAP mean: 18339 As/10, 50.9 Ah
CAP min : 18222 As/10, 50.6 Ah, # 22
CAP max : 18532 As/10, 51.5 Ah, # 69
-----------------------------------------
Voltage Distribution (dV= 17 mV):
*------------------------------->--[=]--*
3729 03 > [3744; 3744; 3745] < 00 3746
min [p25; median; p75] max
-----------------------------------------

 

[sokoloff]

I like the idea. Wonder if it could be set up somehow to maybe track cars by user names/VIN's so that we could follow on one page/link how the battery in that particular car has aged? It would seem to be cumbersome to scroll through those battery reports in individual messages. Just thinking out loud here. There are already several threads where members have posted their results. Would be nice to have them all in one place.

Len
2014 EV Coupe 14,500 miles
2014 EV Cabriolet 4,500 miles

 

[Yinzer]

Yes, just having a list of these reports will quickly get combersome - maybe just reporting the CAP mean value, along with age and mileage and climate the car was operated in would be enough.

I presume nominal capacity of the ED battery pack is 50AH (i.e. the advertised 17.6 kwH/350 avg volts), but most hew packs seem to have about 52 AH - as was indicated on my first annual check. so in my case, my pack degraded maybe 1.5 percent per year.

 

[InjuredAgain]

I believe the capacity of the battery unit is 52.1 ah. There are also two capacities stated in the report, and I thought the consensus was the bottom "CAP Min" value was the one that was accurately representative of the battery's capacity.

I've run a couple of dozen battery reports using Len's device and I seem to notice a couple of things. One is that the capacity is higher when it is warmer. And it is higher after more fully discharging the battery before charging it back up.

I'd be happy to contribute. We need to agree on what parameters to report if we're not publishing the entire output. I'd be in favor of date, odometry, mean battery unit temperature, and the CAP min, max, and mean from the bottom portion of the output. Thoughts?

 

[sokoloff]

Wonder if it would be possible to have a thread with a link to a website where we could post some/all of our test results. Kind of like a spreadsheet or some type of a file where we could not only see folks' result, but also to be able to pull up various numbers to compare? Or is that getting more involved and detailed than your original intent? Even if we only do the aH number and conditions, a dedicated "updatable" link would be helpful.

We've got enough computer guys around here that should be able to figure something out.

Len
2014 EV Coupe 14,500 miles
2014 EV Cabriolet 4,500 miles

 

[Yinzer]

My estimate that the capacity is nominally 50AH comes from the advertised pack capacity of 17.6 kWh divided by the pack voltage at 50% SOC of 350 volts. (i.e. 3.8 volts per cell *93 cells). This gives almost exactly 50AH.

Based on my experience messing with 2-wheel home-built EV's most lithium cells are designed to a round AH number - but this is a nominal number with an extra margin added for quality control so that all cells in a large order will be at least 50AH. I presume that is why they are typically 52AH in a new ED.

But yes, the worst cell in the chain would dictate the capacity of the whole pack - so the CAP Min (capacity of worst cell) would be the important number..

Just reporting the info you suggested seems ok. From the tests I've downloaded so far, I suspect that the calculated capacity varies with temperature so reporting the the pack temperature is important. Also, considering the history of cars like the LEAF experiencing high degradation in hot climates, some brief climate figures would be good.

 

[Yinzer]

Wonder if it would be possible to have a thread with a link to a website where we could post some/all of our test results. Kind of like a spreadsheet or some type of a file where we could not only see folks' result, but also to be able to pull up various numbers to compare?
Len

This forum allows attaching a file to a post. Every time someone downloads and edits the spreadsheet with their own data they will have to re-upload it to their own post. There will be proliferation of posts - but they will be brief posts.

 

[sokoloff]

Well whatever you guys decide, I'll be happy to add the data from my two cars to the mix. I only hope that the data will be useful and easy to compare to others. I think it's a great idea to have the data for the nerds among us.

Len
2014 EV Coupe 14,500 miles
2014 EV Cabriolet 4,500 miles

 

[centralohcpl]

Anybody have negative opinions on the report I was able to pull this morning while one of the Sokoloffs' were in town

To me (from reading the BMS wiki page) it seems the battery cells are all very close to each other without any more than 2 cells being outside of the median numbers. 15mv difference between upper and lower cells seems very well indeed.


-----------------------------------------
--- ED Battery Management Diagnostics ---
--- v1.0.5 ---
-----------------------------------------

Connect to OBD port - Waiting for CAN-Bus
.CONNECTED
-----------------------------------------
........Reading data....................OK
-----------------------------------------
Battery VIN: WMEEJ9AA4FK830137
Time [hh:mm]: 10:35, ODO : 21144 km
-----------------------------------------
Battery Status : OK

Battery Production [Y/M/D]: 2014/9/10
Battery-FAT date [Y/M/D]: 2014/9/10
Rev.[Y/WK/PL] HW:2014/7/0, SW:2014/18/0
-----------------------------------------
SOC : 60.0 %, realSOC: 64.6 %
HV : 350.3 V, 0.00 A, 0.00 kW
LV : 12.5 V
-----------------------------------------
CV mean : 3765 mV, dV = 15 mV
CV min : 3754 mV
CV max : 3769 mV
OCVtimer: 2896 s
-----------------------------------------
Last measurement : 0 day(s)
Measurement estimation: 0.830
Actual estimation : 0.814
CAP mean: 18147 As/10, 50.4 Ah
CAP min : 18392 As/10, 51.1 Ah
CAP max : 18693 As/10, 51.9 Ah
-----------------------------------------
HV contactor state OFF, for: 244 s
Cycles left : 295924
of max. cycles: 300000
DC isolation : 7846 kOhm, OK
-----------------------------------------
Temperatures Battery-Unit /degC:
module 1: 17.9, 22.3, 18.8
module 2: 17.7, 22.0, 18.6
module 3: 18.1, 22.3, 19.1
mean : 19.6, min : 17.7, max : 22.3
coolant : 11.0
-----------------------------------------
# ;mV ;As/10
01;3764;18033
02;3765;18147
03;3767;18033
04;3767;18090
05;3769;18409
06;3769;18263
07;3769;18205
08;3768;18176
09;3769;18263
10;3768;18147
11;3767;18147
12;3768;18061
13;3765;18061
14;3764;18004
15;3764;17948
16;3766;18147
17;3768;18090
18;3754;18263
19;3767;18033
20;3766;17920
21;3762;18350
22;3767;18033
23;3768;17920
24;3767;17920
25;3766;17948
26;3766;17864
27;3766;18090
28;3767;18090
29;3768;17976
30;3766;18033
31;3765;18263
32;3764;18033
33;3766;18234
34;3765;17976
35;3766;18004
36;3765;17948
37;3767;18147
38;3766;18004
39;3765;17976
40;3763;17892
41;3765;18004
42;3765;18033
43;3768;18061
44;3768;18033
45;3767;18118
46;3767;18033
47;3767;18147
48;3764;18033
49;3762;17892
50;3768;18004
51;3766;17948
52;3766;18033
53;3766;18033
54;3763;18090
55;3766;18061
56;3760;18061
57;3766;18061
58;3765;18147
59;3763;18033
60;3768;18090
61;3762;17948
62;3765;18061
63;3757;18263
64;3763;18292
65;3765;18234
66;3763;18090
67;3767;18205
68;3766;18292
69;3767;18176
70;3765;18147
71;3765;18061
72;3767;18292
73;3766;18292
74;3765;18205
75;3766;18263
76;3766;18263
77;3767;18263
78;3767;18147
79;3765;18147
80;3766;18176
81;3764;18061
82;3766;18176
83;3766;18350
84;3767;18292
85;3766;18263
86;3765;18176
87;3766;18263
88;3765;18263
89;3765;18263
90;3767;18118
91;3766;18263
92;3764;18090
93;3762;18176
-----------------------------------------
Individual Cell Statistics:
-----------------------------------------
CV mean : 3766 mV, dV= 15 mV, s= 2.30 mV
CV min : 3754 mV, # 18
CV max : 3769 mV, # 5
-----------------------------------------
CAP mean: 18114 As/10, 50.3 Ah
CAP min : 17864 As/10, 49.6 Ah, # 26
CAP max : 18409 As/10, 51.1 Ah, # 5
-----------------------------------------
Voltage Distribution (dV= 15 mV):
*-------------------->-------[==|=]-----*
3754 02 > [3765; 3766; 3767] < 00 3769
min [p25; median; p75] max
-----------------------------------------
Reading data....OK
-----------------------------------------
Status OBL Charger-Unit:
User selected : 16 A
Cable maximum : 204 A
AC L1: 0.0 V, 0.0 A
DC HV: 0.0 V, 0.0 A
DC LV: 12.7 V
-----------------------------------------
Temperatures Charger-Unit /degC:
Reported : NA
Cooling plate : NA
Inlet socket : NA
-----------------------------------------
Reading data.OK
-----------------------------------------
Status Cooling- and Subsystems:
Temperature : 10.3 degC
Cooling fan : 0.0 %
Cooling pump : 0.0 %, 13 degC
: 12.5 V, 0.0 A
OTR:
Cooling fan : 17 h
Cooling pump : 3191 h
Battery heater: 0 h, OFF
Vaccum pump : 23.207 h
Pressure 1, 2 : -538 mbar, -538 mbar
-----------------------------------------


-----------------------------------------
Battery VIN: WMEEJ9AA4FK830137
Time [hh:mm]: 10:35, ODO : 21144 km
-----------------------------------------
SOC : 60.0 %, realSOC: 64.6 %
HV : 350.3 V, 0.00 A, 0.00 kW
LV : 12.5 V
-----------------------------------------

 

[Yinzer]

No, the battery pack status looks quite good to me...

 

[sokoloff]

Yeah, if you're in that 50+ Ah range, I'd call it good too.

Len
2014 EV Coupe 14,500 miles
2014 EV Cabriolet 4,500 miles

 

[kcfoxie]

Thoughts on mine, folks?

=~=~=~=~=~=~=~=~=~=~=~= PuTTY log 2018.04.30 08:20:01 =~=~=~=~=~=~=~=~=~=~=~=

-----------------------------------------
--- ED Battery Management Diagnostics ---
--- v1.0.5 ---
-----------------------------------------

Connect to OBD port - Waiting for CAN-Bus
.CONNECTED
-----------------------------------------
Reading dataOK
-----------------------------------------
Battery VIN: WMEEK9AA8DK679667
Time [hh:mm]: 08:20, ODO : 57714 km
-----------------------------------------
Battery Status : OK

Battery Production [Y/M/D]: 2013/2/4
Battery-FAT date [Y/M/D]: 2013/2/5
Rev.[Y/WK/PL] HW:2012/38/0, SW:2014/18/0
-----------------------------------------
SOC : 99.5 %, realSOC: 98.5 %
HV : 388.1 V, -0.53 A, -0.21 kW
LV : 14.4 V
-----------------------------------------
CV mean : 4169 mV, dV = 25 mV
CV min : 4146 mV
CV max : 4171 mV
OCVtimer: 3422 s
-----------------------------------------
Last measurement : 5 day(s)
Measurement estimation: 0.806
Actual estimation : 0.683
CAP mean: 18283 As/10, 50.8 Ah
CAP min : 17605 As/10, 48.9 Ah
CAP max : 18186 As/10, 50.5 Ah
-----------------------------------------
HV contactor state ON, low current: 422 s
Cycles left : 287706
of max. cycles: 300000
DC isolation : 63263 kOhm, OK
-----------------------------------------
Temperatures Battery-Unit /degC:
module 1: 17.1, 19.8, 18.4
module 2: 17.9, 20.4, 18.6
module 3: 17.0, 19.4, 17.2
mean : 18.4, min : 17.0, max : 20.4
coolant : 13.7
-----------------------------------------
# ;mV ;As/10
01;4169;17731
02;4170;17637
03;4169;17637
04;4168;17669
05;4170;17669
06;4170;17669
07;4168;17731
08;4170;17669
09;4169;17731
10;4169;17669
11;4168;17637
12;4168;17763
13;4169;17795
14;4169;17669
15;4169;17731
16;4168;17606
17;4170;17606
18;4168;17731
19;4168;17669
20;4168;17700
21;4168;17544
22;4168;17391
23;4168;17763
24;4170;17361
25;4170;17483
26;4170;17361
27;4170;17922
28;4168;17731
29;4169;17669
30;4168;17731
31;4168;17731
32;4169;17731
33;4169;17669
34;4170;17669
35;4168;17700
36;4169;17637
37;4170;17763
38;4171;17422
39;4169;17763
40;4168;17669
41;4169;17700
42;4169;17700
43;4171;17606
44;4171;17763
45;4171;17700
46;4171;17637
47;4169;17637
48;4168;17763
49;4168;17241
50;4169;17731
51;4168;17795
52;4170;17637
53;4171;17669
54;4170;17669
55;4170;17514
56;4171;17483
57;4170;17637
58;4168;17700
59;4170;17331
60;4170;17301
61;4168;17452
62;4168;17483
63;4169;17731
64;4169;17422
65;4168;17637
66;4170;17669
67;4168;17731
68;4169;17637
69;4169;17544
70;4171;17483
71;4169;17514
72;4170;17301
73;4171;17544
74;4170;17483
75;4170;17606
76;4169;17483
77;4170;17637
78;4170;17606
79;4169;17422
80;4170;17700
81;4168;17544
82;4171;17422
83;4170;17361
84;4169;17637
85;4145;17271
86;4168;17637
87;4171;17483
88;4170;17483
89;4170;17700
90;4168;17422
91;4170;17544
92;4170;17575
93;4170;17514
-----------------------------------------
Individual Cell Statistics:
-----------------------------------------
CV mean : 4169 mV, dV= 26 mV, s= 2.70 mV
CV min : 4145 mV, # 85
CV max : 4171 mV, # 38
-----------------------------------------
CAP mean: 17606 As/10, 48.9 Ah
CAP min : 17241 As/10, 47.9 Ah, # 49
CAP max : 17922 As/10, 49.8 Ah, # 27
-----------------------------------------
Voltage Distribution (dV= 26 mV):
*----------------------------->----[|=]-*
4145 00 > [4168; 4169; 4170] < 00 4171
min [p25; median; p75] max
-----------------------------------------
Reading dataOK
-----------------------------------------
Status OBL Charger-Unit:
User selected : 16 A
Cable maximum : 204 A
AC L1: 0.0 V, 0.0 A
DC HV: 0.0 V, 0.0 A
DC LV: 14.6 V
-----------------------------------------
Temperatures Charger-Unit /degC:
Reported : NA
Cooling plate : NA
Inlet socket : NA
-----------------------------------------
Reading dataOK
-----------------------------------------
Status Cooling- and Subsystems:
Temperature : 8.8 degC
Cooling fan : 0.0 %
Cooling pump : 68.6 %, 11 degC
: 13.9 V, 1.8 A
OTR:
Cooling fan : 63 h
Cooling pump : 6651 h
Battery heater: 0 h, OFF
Vaccum pump : 50.649 h
Pressure 1, 2 : -714 mbar, -716 mbar
-----------------------------------------


-----------------------------------------
Battery VIN: WMEEK9AA8DK679667
Time [hh:mm]: 08:20, ODO : 57714 km
-----------------------------------------
SOC : 99.5 %, realSOC: 98.5 %
HV : 388.1 V, -0.53 A, -0.21 kW
LV : 14.4 V
-----------------------------------------
ENTER command... (? for help)
CMD >>

 

[sokoloff]

So what's the difference in conditions between the results you posted on the other thread and this one? Seems like the other results looked a little better, i.e. Ah all at, near or above 50 while this one is slightly lower. Like to hear input from others on how concerned we should be when the Ah's start to drop below 50.

Len
2014 EV Coupe 15,000 miles
2014 EV Cabriolet 4,500 miles

 

[InjuredAgain]

Kcfoxie, I think the consensus is that the CAP min from the bottom portion of the output represents the actual usable capacity of your HV battery as it is practically limited by the weakest cell of them all. So that would be 47.9, or a loss of 8.1% of capacity. However, my experience has been that a deeper discharge to 20% or less, followed by charging to 100%, increases the reported cell capacities. It also looks like it is relatively cool where you are, and warmer temperatures also increase the reported cell capacities.

During our mild winters, my capacity was just under or around 50 ah, and has steadily increased as summer is approaching and now is nearing 52 ah, even though overnight temps in our garage, where we charge, are still only in the 55-60 degree range.

I guess maybe the takeaway is to pursue a warranty claim against the battery when it is cold...

 

[kcfoxie]

So I ran the car down to 24% SOC, let it sit 1 hour and 45 min, and then charged it up... took 4 hours and had some interesting spikes at the end of the charge cycle:

I got the "charging done," "charging started" repeat cycle about 3-4 times...it went from stopping at 99% to starting then stopping and starting at 100%. I waited till the charger told me the car stopped drawing power to disconnect and run the second test:
=~=~=~=~=~=~=~=~=~=~=~= PuTTY log 2018.04.30 21:37:48 =~=~=~=~=~=~=~=~=~=~=~=

-----------------------------------------
--- ED Battery Management Diagnostics ---
--- v1.0.5 ---
-----------------------------------------

Connect to OBD port - Waiting for CAN-Bus
.CONNECTED
-----------------------------------------
Reading dataOK
-----------------------------------------
Battery VIN: WMEEK9AA8DK679667
Time [hh:mm]: 21:38, ODO : 57789 km
-----------------------------------------
Battery Status : OK

Battery Production [Y/M/D]: 2013/2/4
Battery-FAT date [Y/M/D]: 2013/2/5
Rev.[Y/WK/PL] HW:2012/38/0, SW:2014/18/0
-----------------------------------------
SOC : 100.0 %, realSOC: 99.0 %
HV : 389.5 V, -0.69 A, -0.27 kW
LV : 14.0 V
-----------------------------------------
CV mean : 4177 mV, dV = 24 mV
CV min : 4157 mV
CV max : 4181 mV
OCVtimer: 1306 s
-----------------------------------------
Last measurement : 0 day(s)
Measurement estimation: 0.832
Actual estimation : 0.832
CAP mean: 18118 As/10, 50.3 Ah
CAP min : 17618 As/10, 48.9 Ah
CAP max : 18187 As/10, 50.5 Ah
-----------------------------------------
HV contactor state ON, low current: 222 s
Cycles left : 287700
of max. cycles: 300000
DC isolation : 53155 kOhm, OK
-----------------------------------------
Temperatures Battery-Unit /degC:
module 1: 29.4, 31.7, 30.4
module 2: 29.8, 32.0, 30.3
module 3: 29.0, 31.5, 30.2
mean : 30.5, min : 29.0, max : 32.0
coolant : 25.1
-----------------------------------------
# ;mV ;As/10
01;4175;18118
02;4179;18038
03;4177;18011
04;4179;18011
05;4175;18038
06;4178;18091
07;4174;18064
08;4180;18011
09;4177;18064
10;4178;18038
11;4176;18011
12;4175;18199
13;4180;18091
14;4178;18091
15;4176;18118
16;4180;18011
17;4178;18038
18;4177;18064
19;4177;18064
20;4177;18064
21;4177;17958
22;4179;17880
23;4174;18064
24;4181;17828
25;4181;17776
26;4181;17776
27;4177;18199
28;4176;18064
29;4179;17958
30;4177;18064
31;4176;18064
32;4178;18091
33;4176;18145
34;4178;18172
35;4178;18172
36;4178;18038
37;4176;18280
38;4181;17880
39;4175;18145
40;4178;18038
41;4178;18091
42;4178;18118
43;4179;18118
44;4178;18199
45;4177;18172
46;4178;18038
47;4177;18118
48;4179;18172
49;4181;17725
50;4177;18172
51;4175;18226
52;4179;18064
53;4178;18064
54;4179;18038
55;4180;17985
56;4178;18011
57;4180;18091
58;4177;18064
59;4181;17828
60;4181;17828
61;4179;17906
62;4179;18038
63;4176;18172
64;4181;17906
65;4178;18064
66;4177;18172
67;4177;18172
68;4179;18145
69;4177;18145
70;4179;17958
71;4178;17985
72;4181;17828
73;4176;18011
74;4181;17932
75;4176;18011
76;4178;18038
77;4176;18064
78;4178;18038
79;4177;17958
80;4177;18172
81;4176;18172
82;4179;18011
83;4179;17906
84;4179;18091
85;4156;18064
86;4178;18064
87;4178;17958
88;4179;17985
89;4177;18118
90;4180;18011
91;4177;18064
92;4177;18064
93;4179;18038
-----------------------------------------
Individual Cell Statistics:
-----------------------------------------
CV mean : 4178 mV, dV= 25 mV, s= 2.84 mV
CV min : 4156 mV, # 85
CV max : 4181 mV, # 24
-----------------------------------------
CAP mean: 18045 As/10, 50.1 Ah
CAP min : 17725 As/10, 49.2 Ah, # 49
CAP max : 18280 As/10, 50.8 Ah, # 37
-----------------------------------------
Voltage Distribution (dV= 25 mV):
*--------------------------->----[=|]---*
4156 00 > [4177; 4178; 4179] < 00 4181
min [p25; median; p75] max
-----------------------------------------
Reading dataOK
-----------------------------------------
Status OBL Charger-Unit:
User selected : 16 A
Cable maximum : 204 A
AC L1: 0.0 V, 0.0 A
DC HV: 0.0 V, 0.0 A
DC LV: 14.1 V
-----------------------------------------
Temperatures Charger-Unit /degC:
Reported : NA
Cooling plate : NA
Inlet socket : NA
-----------------------------------------
Reading dataOK
-----------------------------------------
Status Cooling- and Subsystems:
Temperature : 26.5 degC
Cooling fan : 0.0 %
Cooling pump : 64.3 %, 28 degC
: 13.5 V, 1.4 A
OTR:
Cooling fan : 63 h
Cooling pump : 6656 h
Battery heater: 0 h, OFF
Vaccum pump : 50.668 h
Pressure 1, 2 : -504 mbar, -505 mbar
-----------------------------------------


-----------------------------------------
Battery VIN: WMEEK9AA8DK679667
Time [hh:mm]: 21:38, ODO : 57789 km
-----------------------------------------
SOC : 100.0 %, realSOC: 99.0 %
HV : 389.5 V, -0.69 A, -0.27 kW
LV : 14.0 V
-----------------------------------------
ENTER command... (? for help)
CMD >>

So it looks like Injuredagain is correct -- you get a different result when you get the car to a lower SOC then fully charge it. The GOM shows 63 miles -- about right for this time of year.

Another interesting thing... it says that the User Selected charge rate is 16A. We know the 453 charges at 32A. Possibility that the 451 has the same charger, but it's coded to work at half its capacity? Thoughts and opinions welcome...

 

[kcfoxie]

Test results from our 2014....
=~=~=~=~=~=~=~=~=~=~=~= PuTTY log 2018.04.30 21:43:12 =~=~=~=~=~=~=~=~=~=~=~=

-----------------------------------------
--- ED Battery Management Diagnostics ---
--- v1.0.5 ---
-----------------------------------------

Connect to OBD port - Waiting for CAN-Bus
.CONNECTED
-----------------------------------------
Reading dataOK
-----------------------------------------
Battery VIN: WMEEK9AA7EK783973
Time [hh:mm]: 21:43, ODO : 32712 km
-----------------------------------------
Battery Status : OK

Battery Production [Y/M/D]: 2014/1/27
Battery-FAT date [Y/M/D]: 2014/1/27
Rev.[Y/WK/PL] HW:2013/29/0, SW:2014/18/0
-----------------------------------------
SOC : 95.5 %, realSOC: 94.1 %
HV : 384.4 V, -0.91 A, -0.35 kW
LV : 14.1 V
-----------------------------------------
CV mean : 4114 mV, dV = 25 mV
CV min : 4093 mV
CV max : 4118 mV
OCVtimer: 1338 s
-----------------------------------------
Last measurement : 0 day(s)
Measurement estimation: 0.842
Actual estimation : 0.834
CAP mean: 18301 As/10, 50.8 Ah
CAP min : 17830 As/10, 49.5 Ah
CAP max : 18216 As/10, 50.6 Ah
-----------------------------------------
HV contactor state ON, low current: 61 s
Cycles left : 293911
of max. cycles: 300000
DC isolation : 62878 kOhm, OK
-----------------------------------------
Temperatures Battery-Unit /degC:
module 1: 24.8, 26.1, 25.0
module 2: 25.5, 26.7, 25.6
module 3: 25.5, 26.4, 25.5
mean : 25.7, min : 24.8, max : 26.7
coolant : 23.8
-----------------------------------------
# ;mV ;As/10
01;4117;18428
02;4116;18454
03;4117;18352
04;4115;18454
05;4116;18176
06;4117;18226
07;4110;18226
08;4112;18301
09;4110;18226
10;4109;18176
11;4110;18226
12;4109;18176
13;4112;18377
14;4113;18505
15;4101;18428
16;4114;18505
17;4116;18226
18;4116;18226
19;4116;18326
20;4115;18126
21;4117;18176
22;4115;18428
23;4117;18176
24;4117;18176
25;4117;18176
26;4117;18126
27;4116;18176
28;4116;18126
29;4117;18276
30;4117;18428
31;4117;18226
32;4116;18326
33;4115;18251
34;4116;18226
35;4111;18226
36;4115;18251
37;4114;18276
38;4115;18301
39;4116;18377
40;4115;18377
41;4113;17931
42;4115;18226
43;4117;18276
44;4116;18326
45;4116;18251
46;4116;18352
47;4115;18276
48;4116;18454
49;4116;18377
50;4116;18326
51;4116;18352
52;4116;18326
53;4117;18326
54;4116;18326
55;4116;18326
56;4115;18326
57;4116;18326
58;4116;18352
59;4117;18377
60;4116;18352
61;4116;18326
62;4116;18276
63;4103;18377
64;4113;18352
65;4117;18226
66;4098;18557
67;4117;18428
68;4114;18505
69;4117;18479
70;4116;18505
71;4118;18428
72;4117;18226
73;4117;18428
74;4115;18557
75;4112;18377
76;4093;18428
77;4114;18352
78;4111;18403
79;4117;18326
80;4115;18276
81;4117;18226
82;4115;18276
83;4117;18326
84;4116;18352
85;4117;18276
86;4117;18276
87;4117;18276
88;4117;18326
89;4113;18251
90;4105;18251
91;4112;18276
92;4093;18251
93;4112;18276
-----------------------------------------
Individual Cell Statistics:
-----------------------------------------
CV mean : 4114 mV, dV= 25 mV, s= 4.66 mV
CV min : 4093 mV, # 76
CV max : 4118 mV, # 71
-----------------------------------------
CAP mean: 18311 As/10, 50.9 Ah
CAP min : 17931 As/10, 49.8 Ah, # 41
CAP max : 18557 As/10, 51.5 Ah, # 66
-----------------------------------------
Voltage Distribution (dV= 25 mV):
*-------------------------->-----[==|=]-*
4093 07 > [4114; 4116; 4117] < 00 4118
min [p25; median; p75] max
-----------------------------------------
Reading dataOK
-----------------------------------------
Status OBL Charger-Unit:
User selected : 16 A
Cable maximum : 204 A
AC L1: 0.0 V, 0.0 A
DC HV: 0.0 V, 0.0 A
DC LV: 14.2 V
-----------------------------------------
Temperatures Charger-Unit /degC:
Reported : NA
Cooling plate : NA
Inlet socket : NA
-----------------------------------------
Reading dataOK
-----------------------------------------
Status Cooling- and Subsystems:
Temperature : 20.4 degC
Cooling fan : 0.0 %
Cooling pump : 64.7 %, 21 degC
: 13.7 V, 1.4 A
OTR:
Cooling fan : 70 h
Cooling pump : 3921 h
Battery heater: 0 h, OFF
Vaccum pump : 27.204 h
Pressure 1, 2 : -421 mbar, -427 mbar
-----------------------------------------


-----------------------------------------
Battery VIN: WMEEK9AA7EK783973
Time [hh:mm]: 21:43, ODO : 32712 km
-----------------------------------------
SOC : 95.5 %, realSOC: 94.1 %
HV : 384.4 V, -0.91 A, -0.35 kW
LV : 14.1 V
-----------------------------------------
ENTER command... (? for help)
CMD >>

49.2 vs 49.8; different of +/- 16,000 miles and a full year of age. I think my 13 is in good health. The 14 had a full charge from a low SOC earlier today, hence the 0 Days since test ran.

 

[kcfoxie]

52Ah is the capacity when new, right? If so, the 2013 has 94% of its battery life and our 2014 has 95%. Guess I'll have to go visit Len this summer to see if I can still ebb 70-75 miles out of it. When I can't do that anymore, I'll believe I've seen noticeable capacity loss!

Also, looking at the charge cycle remaining count... these things won't have hit the 50% mark in charge cycles before ~350k miles. The next three years will tell us a lot about the battery's long term health... especially from the more active drivers like myself and our friend with a '14 hard top (has almost 60k miles now).

 

[centralohcpl]

Do you have a ChargePoint charger or something similar that lets you track to charging cycle?


Sent from my iPhone using Tapatalk

 

[InjuredAgain]

52Ah is the capacity when new, right? If so, the 2013 has 94% of its battery life and our 2014 has 95%. Guess I'll have to go visit Len this summer to see if I can still ebb 70-75 miles out of it. When I can't do that anymore, I'll believe I've seen noticeable capacity loss!

Also, looking at the charge cycle remaining count... these things won't have hit the 50% mark in charge cycles before ~350k miles. The next three years will tell us a lot about the battery's long term health... especially from the more active drivers like myself and our friend with a '14 hard top (has almost 60k miles now).

kcfoxie, my experience has been that if you do the deeper discharge followed by the charge to full, and do it a few times in a row, your battery capacity will gradually inch upward. Maybe do that in a month or two when the weather is consistently warmer? I'd bet both your vehicles will be over 50 ah.

Here is where mines was at the last time I ran the test:


-----------------------------------------
--- ED Battery Management Diagnostics ---
--- v1.0.4 ---
-----------------------------------------

Connect to OBD port - Waiting for CAN-Bus
.CONNECTED
-----------------------------------------
........Reading data....................OK
-----------------------------------------
Battery VIN: WMEEJ9AAXFK834189
Time [hh:mm]: 15:42, ODO : 12944 km
-----------------------------------------
Battery Status : OK

Battery Production [Y/M/D]: 2014/10/27
Battery-FAT date [Y/M/D]: 2014/10/27
Rev.[Y/WK/PL] HW:2014/7/0, SW:2014/18/0
-----------------------------------------
SOC : 33.0 %, realSOC: 38.8 %
HV : 340.4 V, 0.22 A, 0.07 kW
LV : 13.7 V
-----------------------------------------
CV mean : 3645 mV, dV = 11 mV
CV min : 3637 mV
CV max : 3648 mV
OCVtimer: 1338 s
-----------------------------------------
Last measurement : 5 day(s)
Measurement estimation: 0.793
Actual estimation : 0.678
CAP mean: 18782 As/10, 52.2 Ah
CAP min : 18381 As/10, 51.1 Ah
CAP max : 18760 As/10, 52.1 Ah
-----------------------------------------
HV contactor state ON, low current: 2 s
Cycles left : 297628
of max. cycles: 300000
DC isolation : 55265 kOhm, OK
-----------------------------------------
Temperatures Battery-Unit /degC:
module 1: 24.8, 27.9, 25.3
module 2: 24.8, 28.8, 25.8
module 3: 24.4, 28.2, 26.0
mean : 26.2, min : 24.4, max : 28.8
coolant : 21.3
-----------------------------------------
# ;mV ;As/10
01;3646;18476
02;3645;18506
03;3645;18597
04;3643;18446
05;3647;18597
06;3646;18597
07;3644;18476
08;3645;18476
09;3644;18416
10;3636;18597
11;3645;18536
12;3644;18536
13;3645;18597
14;3643;18476
15;3645;18536
16;3643;18536
17;3647;18658
18;3647;18597
19;3644;18476
20;3647;18658
21;3644;18476
22;3647;18628
23;3645;18476
24;3643;18446
25;3645;18597
26;3643;18326
27;3646;18597
28;3645;18567
29;3644;18476
30;3643;18416
31;3644;18416
32;3645;18536
33;3646;18597
34;3646;18597
35;3647;18597
36;3647;18597
37;3647;18658
38;3646;18658
39;3646;18658
40;3645;18597
41;3646;18597
42;3646;18628
43;3647;18597
44;3646;18597
45;3647;18628
46;3647;18628
47;3647;18658
48;3647;18689
49;3645;18597
50;3645;18567
51;3645;18597
52;3645;18658
53;3647;18658
54;3645;18597
55;3645;18597
56;3646;18658
57;3644;18536
58;3647;18658
59;3644;18597
60;3645;18597
61;3645;18597
62;3645;18536
63;3645;18476
64;3644;18506
65;3645;18597
66;3645;18597
67;3645;18597
68;3645;18597
69;3645;18567
70;3645;18567
71;3645;18567
72;3645;18567
73;3645;18597
74;3646;18628
75;3646;18658
76;3645;18567
77;3645;18597
78;3645;18567
79;3645;18658
80;3647;18658
81;3646;18597
82;3645;18597
83;3644;18536
84;3647;18628
85;3647;18658
86;3646;18597
87;3646;18658
88;3646;18597
89;3646;18597
90;3645;18597
91;3646;18597
92;3645;18567
93;3645;18536
-----------------------------------------
Individual Cell Statistics:
-----------------------------------------
CV mean : 3645 mV, dV= 11 mV, s= 1.47 mV
CV min : 3636 mV, # 10
CV max : 3647 mV, # 5
-----------------------------------------
CAP mean: 18575 As/10, 51.6 Ah
CAP min : 18326 As/10, 50.9 Ah, # 26
CAP max : 18689 As/10, 51.9 Ah, # 48
-----------------------------------------
Voltage Distribution (dV= 11 mV):
*---------------------------->--[===]---*
3636 06 > [3645; 3645; 3646] < 00 3647
min [p25; median; p75] max
-----------------------------------------
Reading data....OK
-----------------------------------------
Status OBL Charger-Unit:
User selected : 16 A
Cable maximum : 204 A
AC L1: 114.0 V, 11.1 A
DC HV: 338.4 V, 3.9 A
DC LV: 14.4 V
-----------------------------------------
Temperatures Charger-Unit /degC:
Reported : 39
Cooling plate : 32
Inlet socket : NA
-----------------------------------------
Reading data.OK
-----------------------------------------
Status Cooling- and Subsystems:
Temperature : 24.2 degC
Cooling fan : 0.0 %
Cooling pump : 35.7 %, 24 degC
: 14.1 V, 0.2 A
OTR:
Cooling fan : 7 h
Cooling pump : 1966 h
Battery heater: 0 h, OFF
Vaccum pump : 10.834 h
Pressure 1, 2 : -610 mbar, -614 mbar
-----------------------------------------


-----------------------------------------
Battery VIN: WMEEJ9AAXFK834189
Time [hh:mm]: 15:42, ODO : 12944 km
-----------------------------------------
SOC : 33.0 %, realSOC: 38.8 %
HV : 340.4 V, 0.22 A, 0.07 kW
LV : 13.7 V
-----------------------------------------
ENTER command... (? for help)
CMD >>

 

[kcfoxie]

Do you have a ChargePoint charger or something similar that lets you track to charging cycle?


Sent from my iPhone using Tapatalk

I have two ChargePoint home units, a 16A and a 32A. I'm actually a featured profile on their website, in two different posts.