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Discussion Starter #1
First of all, I want to thank Len Sokoloff and his son for making the battery test units available. Len, a huge thanks! This is a fantastic service to the smart ED owner community, and the case with smart logo is awesome!

I used it for the first time tonight. The battery was at 34% charge having been driven all day (39.8 miles driven, about half of that on the freeway at an actual 65 MPH/indicated 70 MPH, and 22 miles of range left), and it was in my garage at about 45 degrees F. There are capacities shown at various points in the output, and I'm not sure which (if either) are the ones that indicate the health of the HV battery. Interestingly, I see that despite the gauge showing 34% SOC, there was something saying the actual SOC was 42%.

I'm charging it up and will run this again tomorrow morning when it is fully charged.

What do you all think?


-----------------------------------------
........Reading data....................OK
-----------------------------------------
Battery VIN: WMEEJ9AAXFK834189
Time [hh:mm]: 20:56, ODO : 7727 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:2013/29/1
-----------------------------------------
SOC : 34.0 %, realSOC: 42.1 %
HV : 340.4 V, -1.12 A, -0.38 kW
LV : 13.4 V
-----------------------------------------
CV mean : 3655 mV, dV = 9 mV
CV min : 3649 mV
CV max : 3658 mV
OCVtimer: 5849 s
-----------------------------------------
Last measurement : 16 day(s)
Measurement estimation: 0.783
Actual estimation : 0.502
CAP mean: 18690 As/10, 51.9 Ah
CAP min : 18267 As/10, 50.7 Ah
CAP max : 18754 As/10, 52.1 Ah
-----------------------------------------
HV contactor state ON, low current: 3 s
Cycles left : 298567
of max. cycles: 300000
DC isolation : 65534 kOhm, OK
-----------------------------------------
Temperatures Battery-Unit /degC:
module 1: 12.7, 13.7, 12.4
module 2: 12.9, 14.8, 13.2
module 3: 12.2, 13.7, 12.0
mean : 13.1, min : 12.0, max : 14.8
coolant : 10.4
-----------------------------------------
# ;mV ;As/10
01;3654;17786
02;3654;17816
03;3656;17846
04;3654;17668
05;3656;17906
06;3656;17906
07;3655;17786
08;3653;17698
09;3653;17668
10;3655;17846
11;3655;17786
12;3655;17816
13;3655;17816
14;3655;17786
15;3655;17786
16;3655;17786
17;3657;17996
18;3656;17996
19;3655;17786
20;3656;17966
21;3655;17786
22;3658;17996
23;3655;17727
24;3654;17639
25;3656;17846
26;3653;17610
27;3657;17936
28;3656;17846
29;3654;17757
30;3654;17757
31;3654;17757
32;3656;17906
33;3656;17906
34;3656;17876
35;3656;17906
36;3657;17966
37;3657;17966
38;3655;17996
39;3656;17906
40;3655;17846
41;3656;17936
42;3655;17936
43;3656;17966
44;3655;17966
45;3653;17906
46;3656;17936
47;3656;18027
48;3651;17996
49;3658;17936
50;3658;17936
51;3658;17966
52;3658;17936
53;3656;17996
54;3656;17936
55;3655;17876
56;3656;17996
57;3649;17816
58;3656;17996
59;3654;17906
60;3654;17936
61;3655;17936
62;3654;17816
63;3653;17786
64;3654;17846
65;3654;17876
66;3654;17816
67;3655;17876
68;3655;17876
69;3656;17906
70;3656;17786
71;3656;17816
72;3657;17876
73;3656;17846
74;3657;17936
75;3657;17906
76;3657;17936
77;3655;17816
78;3655;17876
79;3656;17966
80;3657;17936
81;3655;17876
82;3656;17906
83;3654;17846
84;3656;17936
85;3656;17996
86;3656;17936
87;3655;17906
88;3654;17876
89;3656;17906
90;3655;17906
91;3654;17906
92;3655;17816
93;3653;17816
-----------------------------------------
Individual Cell Statistics:
-----------------------------------------
CV mean : 3655 mV, dV= 9 mV, s= 1.45 mV
CV min : 3649 mV, # 57
CV max : 3658 mV, # 22
-----------------------------------------
CAP mean: 17875 As/10, 49.7 Ah
CAP min : 17610 As/10, 48.9 Ah, # 26
CAP max : 18027 As/10, 50.1 Ah, # 47
-----------------------------------------
Voltage Distribution (dV= 9 mV):
*------->-------------[===|====]--------*
3649 00 > [3654; 3655; 3656] < 00 3658
min [p25; median; p75] max
-----------------------------------------
Reading data....OK
-----------------------------------------
Status OBL Charger-Unit:
User selected : 12 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 data.OK
-----------------------------------------
Status Cooling- and Subsystems:
Temperature : 6.3 degC
Cooling fan : 0.0 %
Cooling pump : 92.9 %, 8 degC
: 13.7 V, 5.0 A
OTR:
Cooling fan : 7 h
Cooling pump : 1212 h
Battery heater: 0 h, OFF
Vaccum pump : 7.005 h
Pressure 1, 2 : -434 mbar, -441 mbar
-----------------------------------------


-----------------------------------------
Battery VIN: WMEEJ9AAXFK834189
Time [hh:mm]: 20:56, ODO : 7727 km
-----------------------------------------
SOC : 34.0 %, realSOC: 42.1 %
HV : 340.4 V, -1.12 A, -0.38 kW
LV : 13.4 V
-----------------------------------------
ENTER command... (? for help)
CMD >>
 

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Discussion Starter #3
Here is the output after charging to 100% overnight. It is a brisk 25 degrees F. outside but about 45 degrees F. in the garage. Real SOC is said to be 93.8% while displayed SOC is 100%.

Is this the relevant part:

Last measurement : 17 day(s)
Measurement estimation: 0.783
Actual estimation : 0.499
CAP mean: 18690 As/10, 51.9 Ah
CAP min : 18267 As/10, 50.7 Ah
CAP max : 18754 As/10, 52.1 Ah

and does this mean my battery capacity is 51.9 Ah versus the 52 as specified from the factory? These values did not change as it was probably 17 days ago that we last ran the battery below 20% and let it sit for some hours.

Here's the full output:

-----------------------------------------
........Reading data....................OK
-----------------------------------------
Battery VIN: WMEEJ9AAXFK834189
Time [hh:mm]: 07:26, ODO : 7727 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:2013/29/1
-----------------------------------------
SOC : 100.0 %, realSOC: 93.8 %
HV : 388.1 V, -0.59 A, -0.23 kW
LV : 14.4 V
-----------------------------------------
CV mean : 4163 mV, dV = 24 mV
CV min : 4144 mV
CV max : 4168 mV
OCVtimer: 3760 s
-----------------------------------------
Last measurement : 17 day(s)
Measurement estimation: 0.783
Actual estimation : 0.499
CAP mean: 18690 As/10, 51.9 Ah
CAP min : 18267 As/10, 50.7 Ah
CAP max : 18754 As/10, 52.1 Ah
-----------------------------------------
HV contactor state ON, low current: 3 s
Cycles left : 298565
of max. cycles: 300000
DC isolation : 65534 kOhm, OK
-----------------------------------------
Temperatures Battery-Unit /degC:
module 1: 14.3, 15.1, 14.6
module 2: 14.4, 15.8, 15.2
module 3: 14.0, 15.4, 15.5
mean : 14.9, min : 14.0, max : 15.8
coolant : 12.4
-----------------------------------------
# ;mV ;As/10
01;4166;17786
02;4165;17816
03;4166;17846
04;4166;17668
05;4166;17906
06;4164;17906
07;4165;17786
08;4164;17698
09;4164;17668
10;4164;17846
11;4164;17786
12;4165;17816
13;4165;17816
14;4166;17786
15;4165;17786
16;4166;17786
17;4163;17996
18;4161;17996
19;4164;17786
20;4163;17966
21;4164;17786
22;4167;17996
23;4166;17727
24;4168;17639
25;4168;17846
26;4168;17610
27;4167;17936
28;4167;17846
29;4167;17757
30;4167;17757
31;4167;17757
32;4166;17906
33;4166;17906
34;4164;17876
35;4166;17906
36;4166;17966
37;4166;17966
38;4162;17996
39;4163;17906
40;4162;17846
41;4162;17936
42;4162;17936
43;4162;17966
44;4162;17966
45;4154;17906
46;4163;17936
47;4161;18027
48;4145;17996
49;4169;17936
50;4167;17936
51;4169;17966
52;4170;17936
53;4163;17996
54;4164;17936
55;4164;17876
56;4164;17996
57;4150;17816
58;4160;17996
59;4161;17906
60;4161;17936
61;4161;17936
62;4160;17816
63;4163;17786
64;4163;17846
65;4162;17876
66;4163;17816
67;4162;17876
68;4162;17876
69;4168;17906
70;4167;17786
71;4167;17816
72;4168;17876
73;4167;17846
74;4166;17936
75;4164;17906
76;4165;17936
77;4164;17816
78;4164;17876
79;4161;17966
80;4166;17936
81;4162;17876
82;4164;17906
83;4160;17846
84;4163;17936
85;4162;17996
86;4165;17936
87;4162;17906
88;4163;17876
89;4163;17906
90;4164;17906
91;4162;17906
92;4165;17816
93;4163;17816
-----------------------------------------
Individual Cell Statistics:
-----------------------------------------
CV mean : 4164 mV, dV= 25 mV, s= 3.50 mV
CV min : 4145 mV, # 48
CV max : 4170 mV, # 52
-----------------------------------------
CAP mean: 17875 As/10, 49.7 Ah
CAP min : 17610 As/10, 48.9 Ah, # 26
CAP max : 18027 As/10, 50.1 Ah, # 47
-----------------------------------------
Voltage Distribution (dV= 25 mV):
*---------------->---------[==|==]------*
4145 02 > [4162; 4164; 4166] < 00 4170
min [p25; median; p75] max
-----------------------------------------
Reading data....OK
-----------------------------------------
Status OBL Charger-Unit:
User selected : 12 A
Cable maximum : 204 A
AC L1: 126.1 V, 0.6 A
DC HV: 385.8 V, 0.0 A
DC LV: 14.6 V
-----------------------------------------
Temperatures Charger-Unit /degC:
Reported : 15
Cooling plate : 15
Inlet socket : NA
-----------------------------------------
Reading data.OK
-----------------------------------------
Status Cooling- and Subsystems:
Temperature : 12.1 degC
Cooling fan : 0.0 %
Cooling pump : 46.3 %, 12 degC
: 14.3 V, 0.6 A
OTR:
Cooling fan : 7 h
Cooling pump : 1221 h
Battery heater: 0 h, OFF
Vaccum pump : 7.005 h
Pressure 1, 2 : -421 mbar, -425 mbar
-----------------------------------------


-----------------------------------------
Battery VIN: WMEEJ9AAXFK834189
Time [hh:mm]: 07:26, ODO : 7727 km
-----------------------------------------
SOC : 100.0 %, realSOC: 93.8 %
HV : 388.1 V, -0.59 A, -0.23 kW
LV : 14.4 V
-----------------------------------------
ENTER command... (? for help)
 

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Thanks for the kind words Wayne. Thanks really go to my son. He built them. I'm only the mail room clerk. :)

He only built three extras the first time around and they went quickly. Should have another batch done in early January. Anyone who wants one, please drop me a PM.

Len
2014 EV Coupe 13,500 miles
2014 EV Cabriolet 3,000 miles
 

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Discussion Starter #5
I did remember a previous thread on interpreting the results, and here it is:

http://www.smartcarofamerica.com/forums/f170/diy-battery-diagnostics-116585/

So the "CAP min" is the important value, and mines is 48.9 Ah. Not so great, and I don't think it was ever established if this value changes due to temperature. Because both times I've run it, once at 34% SOC and the second at 100% SOC, I wonder if this just represents what was determined 16/17 days ago when I last ran the battery down and let it sit for a few hours. I'll just use this tool every few months to see how the values change.
 

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I did remember a previous thread on interpreting the results, and here it is:

http://www.smartcarofamerica.com/forums/f170/diy-battery-diagnostics-116585/

So the "CAP min" is the important value, and mines is 48.9 Ah. Not so great, and I don't think it was ever established if this value changes due to temperature. Because both times I've run it, once at 34% SOC and the second at 100% SOC, I wonder if this just represents what was determined 16/17 days ago when I last ran the battery down and let it sit for a few hours. I'll just use this tool every few months to see how the values change.

Just a word of warning on the values posted in that other thread. During that time the firmware underwent a substantial amount of work. The numbers are not directly comparable.

That said, 48Ah, down from about 52Ah, on only seven thousand km isn't that great, but also not hugely bad if the battery was mistreated. Your individual cells are all very similar in value, which is great.

If i get a chance over the holidays I'll update my firmware version to the latest and run a new set of numbers out.
 

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Discussion Starter #7
Blaine, the test shows that my battery pack was made on October 27, 2014. I took delivery of the at the beginning of this past June, 31 months after the battery was made, and the vehicle had **10** miles on it. It undoubtedly sat for a long, long time, probably got charged infrequently if at all. It was delivered via transport from California to Washington with 90% SOC but the salesperson said they just charged it up prior to shipping it. If that doesn't count as being abused, it's probably close.

If you do update your firmware and rerun the battery test, I'd appreciate any insight your new data would offer. Thanks.
 

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Having the car sit for a 2 1/2 years at an initial 90 percent SOC is probably an ideal situation - not abuse at all. Under the very small power-off quiescent loads, the battery pack discharges only very slowly (self-discharge in open-circuit lithium cells is tiny) so after 2 1/2 years maybe it was down to 50 percent at a very worse case. That is an ideal storage situation - as long as it didn't get exposed to below -25C.

Unfortunately, lithium batteries, suffer calendar-degradation no matter how little use they get or how carefully they are stored. They degrade much less that earlier generation cells, but the degradation is still there. Calendar degradation is minimized by keeping the cell at a 50% SOC for as much of the cells life as possible.
 

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Discussion Starter #9
Yinzer, There's no knowing what happened with the battery and SOC. It could have come to the dealer with 50% SOC and then just parked and left for two years as well. In the end, even if I'm down 5%, it still is working great for us, though of course I'd love to have all of the original capacity.

Sent from my SM-T813 using Tapatalk
 

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My two EV's seem to be doing just fine even though they sat for years on the dealer's lot. See notes below in my signature.

Len

2014 EV Coupe 14,000 miles
Bought - August, 2015 Battery produced - August, 2013

2014 EV Cabriolet 3,000 miles
Bought - May, 2017 Battery produced - June, 2014
 

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Discussion Starter #11
I ran the HV battery down to below 20% today and will let it sit for a few hours before charging it, to see if it resets the statistics.

Len, it's good to know that you also don't seem to be experiencing significant battery issues despite having a battery sitting for three years as well.
 

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OK, I thought that you wrote that the car sat through a 2 1/2 year period with no use (only 10 miles on the odo) and an initial SOC of 90 percent. My guess of a final SOC of 50 percent is a super-conservative one jsut to argue that it did not get close to a low SOC. It was probably more like 80 percent at the end of 2 1/2 years. Sitting for a long time at a high SOC does increase calender degradation, though.

Regarding other point about needing to let the car sit for a couple hours below 20 percent before charging to get a good self-capacity measurement; that is really just a rumor that has floated around here. I see no reason why such a thing would be needed. Sure, the no-load voltages of partially discharged cells might take a minute or two to rebound after usage, but not hours.

And on my Smart, if left at a indicated SOC less than 10 percent, it will flash a warning to charge immediately and emit a warning beep, both of which do not go off (even after closing and locking the doors) until it is plugged in.
 

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--- ED Battery Management Diagnostics ---
--- v1.0.2 ---
-----------------------------------------

Connect to OBD port - Waiting for CAN-Bus
.........................................
Connect to OBD port - Waiting for CAN-Bus
.........................................
Connect to OBD port - Waiting for CAN-Bus
.........................................
Connect to OBD port - Waiting for CAN-Bus
..........................CONNECTED
-----------------------------------------
........Reading data....................OK
-----------------------------------------
Battery VIN: WMEEJ9AA1EK729572
Time [hh:mm]: 17:42, ODO : 20100 km
-----------------------------------------
Battery Status : DEGRADED

Battery Production [Y/M/D]: 2013/6/19
Battery-FAT date [Y/M/D]: 2013/6/20
Rev.[Y/WK/PL] HW:2012/38/0, SW:2012/35/1
-----------------------------------------
SOC : 96.5 %, realSOC: 95.0 %
HV : 384.4 V, -0.75 A, -0.29 kW
LV : 12.8 V
-----------------------------------------
CV mean : 4121 mV, dV = 27 mV
CV min : 4097 mV
CV max : 4124 mV
OCVtimer: 6307 s
-----------------------------------------
Last measurement : 11 day(s)
Measurement estimation: 0.725
Actual estimation : 0.522
CAP mean: 18680 As/10, 51.9 Ah
CAP min : 19420 As/10, 53.9 Ah
CAP max : 19610 As/10, 54.5 Ah
-----------------------------------------
HV contactor state ON, low current: 79700 s
Cycles left : 294874
of max. cycles: 300000
DC isolation : 65535 kOhm, DC FAULT
-----------------------------------------
Temperatures Battery-Unit /degC:
module 1: 12.7, 11.0, 13.1
module 2: 12.5, 10.8, 12.8
module 3: 12.4, 10.9, 12.6
mean : 12.1, min : 10.8, max : 13.1
coolant : 12.0
-----------------------------------------
# ;mV ;As/10
01;4121;18949
02;4120;19040
03;4121;18995
04;4122;18995
05;4122;18995
06;4123;19040
07;4122;19133
08;4120;19040
09;4121;19040
10;4120;18904
11;4120;18995
12;4120;18995
13;4122;18995
14;4121;19040
15;4122;19086
16;4123;19040
17;4121;18995
18;4121;18859
19;4121;18904
20;4122;18995
21;4122;18904
22;4122;18995
23;4122;19133
24;4122;18995
25;4121;19179
26;4120;19133
27;4121;19133
28;4121;18995
29;4120;19040
30;4121;18995
31;4120;19086
32;4123;19040
33;4121;19086
34;4123;19086
35;4123;19133
36;4123;19086
37;4122;19086
38;4121;18995
39;4122;19086
40;4122;18949
41;4122;18995
42;4122;19040
43;4120;18949
44;4123;18995
45;4121;18995
46;4123;19040
47;4121;19086
48;4121;19040
49;4121;19040
50;4122;18995
51;4122;18995
52;4122;19040
53;4122;19133
54;4122;19179
55;4122;19133
56;4121;19133
57;4121;19040
58;4123;19133
59;4122;19133
60;4122;19040
61;4121;19133
62;4121;18995
63;4122;19133
64;4122;19040
65;4123;19040
66;4122;18995
67;4121;18995
68;4115;19086
69;4123;19086
70;4122;19086
71;4122;19086
72;4122;19133
73;4121;18995
74;4123;19133
75;4123;18949
76;4123;18949
77;4121;18995
78;4122;18949
79;4122;18995
80;4097;18949
81;4123;19040
82;4123;19086
83;4121;19040
84;4123;18995
85;4122;18949
86;4121;19040
87;4121;19040
88;4121;18995
89;4122;19040
90;4120;18995
91;4121;18995
92;4121;18995
93;4122;19040
-----------------------------------------
Individual Cell Statistics:
-----------------------------------------
CV mean : 4121 mV, dV= 26 mV, s= 2.77 mV
CV min : 4097 mV, # 80
CV max : 4123 mV, # 6
-----------------------------------------
CAP mean: 19035 As/10, 52.9 Ah
CAP min : 18859 As/10, 52.4 Ah, # 18
CAP max : 19179 As/10, 53.3 Ah, # 25
-----------------------------------------
Voltage Distribution (dV= 26 mV):
*---------------------------------->[=|-*
4097 01 > [4121; 4122; 4122] < 00 4123
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: 14.5 V
-----------------------------------------
Temperatures Charger-Unit /degC:
Reported : NA
Cooling plate : NA
Inlet socket : NA
-----------------------------------------
Reading data.OK
-----------------------------------------
Status Cooling- and Subsystems:
Temperature : 10.4 degC
Cooling fan : 0.0 %
Cooling pump : 90.2 %, 13 degC
: 13.8 V, 3.8 A
OTR:
Cooling fan : 35 h
Cooling pump : 4127 h
Battery heater: 0 h, OFF
Vaccum pump : 24.490 h
Pressure 1, 2 : -560 mbar, -555 mbar
-----------------------------------------


-----------------------------------------
Battery VIN: WMEEJ9AA1EK729572
Time [hh:mm]: 17:42, ODO : 20100 km
-----------------------------------------
SOC : 96.5 %, realSOC: 95.0 %
HV : 384.4 V, -0.75 A, -0.29 kW
LV : 12.8 V
-----------------------------------------
ENTER command... (? for help)
CMD >>
 

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I'd be interested to hear what "Battery Degraded" means since his Ah numbers are very good. Don't think I ever heard that before.

Len

2014 EV Coupe 14,000 miles
2014 EV Cabriolet 3,000 miles
 

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Discussion Starter #16
OK, I thought that you wrote that the car sat through a 2 1/2 year period with no use (only 10 miles on the odo) and an initial SOC of 90 percent. My guess of a final SOC of 50 percent is a super-conservative one jsut to argue that it did not get close to a low SOC. It was probably more like 80 percent at the end of 2 1/2 years. Sitting for a long time at a high SOC does increase calender degradation, though.
My writing clarity is lacking! I have no idea how my ED was charged while it sat those two years. All I know is that when it arrived at my house from the transport company, it was at 90% SOC. It could have been charged up just before it was delivered, or it could have been charged multiple times while it just sat. I just don't know and didn't think to ask at the time of purchase.

Regarding other point about needing to let the car sit for a couple hours below 20 percent before charging to get a good self-capacity measurement; that is really just a rumor that has floated around here. I see no reason why such a thing would be needed. Sure, the no-load voltages of partially discharged cells might take a minute or two to rebound after usage, but not hours.

And on my Smart, if left at a indicated SOC less than 10 percent, it will flash a warning to charge immediately and emit a warning beep, both of which do not go off (even after closing and locking the doors) until it is plugged in.
Okay, so two days ago, I ran my ED down to about 16%, and let it sit for about four hours before plugging it in and charging it on 120 volt and maximum amperage. We then had a snowstorm, so it sat for about a day after being fully charged. I did another reading before driving it this afternoon, and the values are quite a bit higher. The "Last measurement" parameter now reads "1 day" and all of the capacity measures are over 50 Ah. So, I think the rumor is true - running it down to some low SOC and letting it sit for some number of hours seems to be necessary to get it to update the values.

All conditions were about the same - the garage was probably around 45 degrees F. during the entire process. We don't often drive it down to a real low SOC before recharging, but it looks like it may be helpful to do so at least every so often.


Connect to OBD port - Waiting for CAN-Bus
....................................CONNECTED
-----------------------------------------
........Reading data....................OK
-----------------------------------------
Battery VIN: WMEEJ9AAXFK834189
Time [hh:mm]: 15:24, ODO : 7968 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:2013/29/1
-----------------------------------------
SOC : 99.5 %, realSOC: 97.8 %
HV : 387.6 V, -1.34 A, -0.52 kW
LV : 13.0 V
-----------------------------------------
CV mean : 4157 mV, dV = 25 mV
CV min : 4140 mV
CV max : 4165 mV
OCVtimer: 7132 s
-----------------------------------------
Last measurement : 1 day(s)
Measurement estimation: 0.800
Actual estimation : 0.777
CAP mean: 19150 As/10, 53.2 Ah
CAP min : 18212 As/10, 50.6 Ah
CAP max : 18656 As/10, 51.8 Ah
-----------------------------------------
HV contactor state ON, low current: 2 s
Cycles left : 298515
of max. cycles: 300000
DC isolation : 65534 kOhm, OK
-----------------------------------------
Temperatures Battery-Unit /degC:
module 1: 10.5, 10.3, 10.0
module 2: 10.3, 10.6, 10.3
module 3: 10.2, 10.2, 9.9
mean : 10.3, min : 9.9, max : 10.6
coolant : 9.4
-----------------------------------------
# ;mV ;As/10
01;4158;18732
02;4157;18759
03;4159;18732
04;4158;18732
05;4159;18759
06;4157;18814
07;4158;18651
08;4156;18705
09;4156;18651
10;4157;18814
11;4157;18705
12;4159;18759
13;4159;18732
14;4160;18705
15;4159;18651
16;4160;18705
17;4156;18842
18;4154;18869
19;4157;18705
20;4157;18814
21;4157;18705
22;4163;18842
23;4160;18678
24;4162;18624
25;4163;18732
26;4162;18570
27;4163;18759
28;4163;18787
29;4162;18732
30;4162;18705
31;4162;18705
32;4159;18787
33;4160;18787
34;4157;18814
35;4160;18787
36;4159;18814
37;4160;18814
38;4155;18842
39;4156;18842
40;4155;18787
41;4154;18842
42;4155;18842
43;4155;18842
44;4154;18842
45;4146;18842
46;4155;18842
47;4154;18842
48;4141;18925
49;4164;18787
50;4163;18814
51;4164;18787
52;4165;18842
53;4156;18869
54;4157;18814
55;4157;18814
56;4156;18842
57;4140;18732
58;4152;18897
59;4152;18842
60;4153;18869
61;4153;18897
62;4153;18814
63;4155;18814
64;4155;18842
65;4154;18842
66;4154;18759
67;4155;18842
68;4154;18787
69;4162;18787
70;4162;18732
71;4161;18732
72;4161;18759
73;4161;18732
74;4159;18759
75;4158;18814
76;4158;18814
77;4157;18814
78;4157;18814
79;4155;18842
80;4158;18869
81;4154;18842
82;4156;18814
83;4154;18759
84;4156;18814
85;4154;18842
86;4157;18814
87;4155;18842
88;4154;18842
89;4157;18842
90;4157;18814
91;4156;18842
92;4158;18814
93;4157;18842
-----------------------------------------
Individual Cell Statistics:
-----------------------------------------
CV mean : 4157 mV, dV= 25 mV, s= 4.11 mV
CV min : 4140 mV, # 57
CV max : 4165 mV, # 52
-----------------------------------------
CAP mean: 18790 As/10, 52.2 Ah
CAP min : 18570 As/10, 51.6 Ah, # 26
CAP max : 18925 As/10, 52.6 Ah, # 48
-----------------------------------------
Voltage Distribution (dV= 25 mV):
*----------->-----------[==|====]-------*
4140 02 > [4155; 4157; 4160] < 00 4165
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: 14.6 V
-----------------------------------------
Temperatures Charger-Unit /degC:
Reported : NA
Cooling plate : NA
Inlet socket : NA
-----------------------------------------
Reading data.OK
-----------------------------------------
Status Cooling- and Subsystems:
Temperature : 8.4 degC
Cooling fan : 0.0 %
Cooling pump : 92.9 %, 12 degC
: 13.8 V, 4.8 A
OTR:
Cooling fan : 7 h
Cooling pump : 1260 h
Battery heater: 0 h, OFF
Vaccum pump : 7.185 h
Pressure 1, 2 : -720 mbar, -725 mbar
-----------------------------------------


-----------------------------------------
Battery VIN: WMEEJ9AAXFK834189
Time [hh:mm]: 15:24, ODO : 7968 km
-----------------------------------------
SOC : 99.5 %, realSOC: 97.8 %
HV : 387.6 V, -1.34 A, -0.52 kW
LV : 13.0 V
-----------------------------------------
ENTER command... (? for help)
 

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922 Posts
Discussion Starter #18
Just ran the data again after bring up charge to 100% Status is still degraded? Anybody have any ideas?
I compared your output to mines. I think in your output, this is the part that is causing the "degraded" message:

HV contactor state ON, low current: 79700 s
Cycles left : 294874
of max. cycles: 300000
DC isolation : 65535 kOhm, DC FAULT


Mines says this:

HV contactor state ON, low current: 2 s
Cycles left : 298515
of max. cycles: 300000
DC isolation : 65534 kOhm, OK


I have no idea why the "low current" value is so different, nor what that value means, or even if that is what is causing it to think you have a "DC FAULT".
 

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922 Posts
Discussion Starter #20
Nice find, Now does anyone know what that means???
We'll need an EE to help us out here. I only know some very basics, and probably some of that is wrong as well. Anyhow. . .

A contactor is the name given to the device that interrupts a high current circuit, such as one that leads to a motor. It isn't designed to act instantaneously like a fuse or circuit breaker, but controlled by some other powered circuit. Since your output says it is "on", I would take that to mean that power can be delivered from your HV battery to the electric drive motor.

I don't know what the "low current" value is supposed to represent. From the thread I linked to in post 5 of this thread, cornwaller and Len Sokoloff posted their outputs from three different smarts, and all of the values were relatively low, I think the highest being cornwaller's 152. Being that it's in the same line as the "contactor" status, it might have something to do with the circuit that controls the contactor which can disconnect the HV battery from the electric motor. Perhaps it's not functioning and in the case of a severe failure where power to the motor would normally be disrupted, in the case of your ED the power remains connected? If so, that's potentially dangerous in case of something like an accident.

This is totally, 100% pure speculation. Having a little bit of knowledge is often a dangerous thing, and having a little bit of knowledge that I think is right but turns out to be factually wrong is even worse. Like I said, we need an EE to help out here.
 
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