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EV battery capacity is properly measured in kwh but I'm guessing in the case of Smart EVs perhaps ALL of them are fitted with exactly the same batteries! This might allow voltage to be assumed to be the same for every battery at every level of charge. Still rather cringeworthy math if so. Anon.
VR
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Here is my fully charged battery data
-----------------------------------------
--- ED Battery Management Diagnostics ---
--- v1.0.7 (451) ---
-----------------------------------------

Connect to OBD port - Waiting for CAN-Bus
.........CONNECTED
-----------------------------------------
........Reading data....................OK
-----------------------------------------
Battery VIN: WMEEK9AA1EK763587
Time [hh:mm]: 12:50, ODO : 26283 km
-----------------------------------------
Battery Status : OK

Battery Production [Y/M/D]: 2013/11/28
Battery-FAT date [Y/M/D]: 2013/11/29
Rev.[Y/WK/PL] HW:2013/29/0, SW:2014/18/0
-----------------------------------------
SOC : 100.0 %, realSOC: 97.0 %
HV : 386.3 V, 0.00 A, 0.00 kW
LV : 12.6 V
-----------------------------------------
CV mean : 4153 mV, dV = 36 mV
CV min : 4128 mV
CV max : 4164 mV
OCVtimer: 4498 s
-----------------------------------------
Last measurement : 0 day(s)
Measurement estimation: 0.804
Actual estimation : 0.804
CAP mean: 18298 As/10, 50.8 Ah
CAP min : 17448 As/10, 48.5 Ah
CAP max : 17779 As/10, 49.4 Ah
-----------------------------------------
HV contactor state OFF, for: 4012 s
Cycles left : 292928
of max. cycles: 300000
DC isolation : 16070 kOhm, OK
-----------------------------------------
Temperatures Battery-Unit /degC:
module 1: 12.8, 19.4, 15.5
module 2: 13.3, 19.3, 15.4
module 3: 12.8, 20.0, 16.5
mean : 16.1, min : 12.8, max : 20.0
coolant : 11.2
-----------------------------------------
# ;mV ;As/10
01;4151;17422
02;4162;17371
03;4154;17498
04;4162;17397
05;4149;17524
06;4162;17371
07;4155;17498
08;4162;17422
09;4153;17524
10;4164;17397
11;4154;17524
12;4155;17397
13;4149;17524
14;4157;17321
15;4150;17473
16;4155;17296
17;4148;17498
18;4158;17346
19;4150;17498
20;4159;17321
21;4150;17549
22;4157;17371
23;4149;17549
24;4155;17346
25;4149;17524
26;4155;17296
27;4152;17473
28;4161;17296
29;4151;17473
30;4161;17296
31;4151;17473
32;4150;17346
33;4153;17447
34;4160;17371
35;4153;17524
36;4160;17371
37;4150;17498
38;4154;17447
39;4148;17498
40;4137;17422
41;4147;17549
42;4154;17422
43;4152;17422
44;4158;17397
45;4149;17524
46;4158;17296
47;4150;17498
48;4160;17422
49;4152;17473
50;4160;17321
51;4153;17422
52;4128;17346
53;4149;17549
54;4130;17498
55;4149;17627
56;4157;17524
57;4147;17757
58;4159;17371
59;4150;17498
60;4160;17321
61;4151;17678
62;4157;17524
63;4152;17575
64;4159;17321
65;4151;17473
66;4157;17575
67;4140;17524
68;4157;17524
69;4152;17524
70;4159;17371
71;4152;17524
72;4160;17371
73;4150;17397
74;4158;17346
75;4151;17524
76;4159;17371
77;4151;17473
78;4159;17321
79;4146;17473
80;4156;17397
81;4148;17601
82;4155;17247
83;4148;17397
84;4162;17271
85;4152;17627
86;4160;17321
87;4151;17473
88;4158;17549
89;4150;17473
90;4159;17346
91;4151;17575
92;4159;17447
93;4149;17731
-----------------------------------------
Individual Cell Statistics:
-----------------------------------------
CV mean : 4153 mV, dV= 36 mV, s= 6.20 mV
CV min : 4128 mV, # 52
CV max : 4164 mV, # 10
-----------------------------------------
CAP mean: 17449 As/10, 48.5 Ah
CAP min : 17247 As/10, 47.9 Ah, # 82
CAP max : 17757 As/10, 49.3 Ah, # 57
-----------------------------------------
Voltage Distribution (dV= 36 mV):
---------->------------[==|=====]------
4128 02 > [4150; 4153; 4158] < 00 4164
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: 11.3 V, 0.0 A
DC LV: 12.6 V
-----------------------------------------
Temperatures Charger-Unit /degC:
Reported : 16
Cooling plate : 14
Inlet socket : NA
-----------------------------------------
Reading data.OK
-----------------------------------------
Status Cooling- and Subsystems:
Temperature : 10.9 degC
Cooling fan : 0.0 %
Cooling pump : 0.0 %, 12 degC
: 12.4 V, 0.0 A
OTR:
Cooling fan : 34 h
Cooling pump : 4378 h
Battery heater: 0 h, OFF
Vaccum pump : 43.165 h
Pressure 1, 2 : -542 mbar, -541 mbar
-----------------------------------------

* All measurements captured *


-----------------------------------------
Battery VIN: WMEEK9AA1EK763587
Time [hh:mm]: 12:50, ODO : 26283 km
-----------------------------------------
SOC : 100.0 %, realSOC: 97.0 %
HV : 386.3 V, 0.00 A, 0.00 kW
LV : 12.6 V
-----------------------------------------
 
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