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My son built me a battery test unit for my Smart electrics so that I could keep tabs on the state of my batteries. He started out using the info provided by forum member Odyssey on this site - https://www.hackster.io/MyLab-odyssey/ed-bmsdiag-6bece5?. He then made a couple code modifications and sent those back to Odyssey. The modifications include printing the serial number of the battery which is identical to the car's VIN if it is the original battery. Another modification allows the battery test data to be read automatically upon connecting the unit to the car's OBD connection. Previously you had to type in a command to make that happen. Information regarding the cooling fan and pump, battery heater and vacuum pump are also now included by default. Below is a copy of what the results look like.
While he was at it, he made several extra test units in case there was an interest from any forum members to have their own unit. I think that $75 shipped is a pretty fair price for the units. Included with each unit are the two cables needed. One cable connects from the OBD port in the car to the test unit. The other cable is a USB cable that connects the test unit to your laptop. A couple of photos coming in the next post. I have tested each of the units in my car(s) to make sure they work.
Disclaimer: I do not know if these units work for the 453 Smart electrics. Be happy to refund your money (less shipping) if you buy one for a 453 and they don't work or if you can't sell it yourself to a 451 owner. Be even more interested to know if they do in fact also work for the 453’s. My son is also going to try to track down a willing 453 ED owner and do some testing or debugging to figure it out, but for now the situation with the 453s is unknown.
Len
2014 EV Coupe 13,750 miles
2014 EV Cabriolet 2,750 miles
While he was at it, he made several extra test units in case there was an interest from any forum members to have their own unit. I think that $75 shipped is a pretty fair price for the units. Included with each unit are the two cables needed. One cable connects from the OBD port in the car to the test unit. The other cable is a USB cable that connects the test unit to your laptop. A couple of photos coming in the next post. I have tested each of the units in my car(s) to make sure they work.
Disclaimer: I do not know if these units work for the 453 Smart electrics. Be happy to refund your money (less shipping) if you buy one for a 453 and they don't work or if you can't sell it yourself to a 451 owner. Be even more interested to know if they do in fact also work for the 453’s. My son is also going to try to track down a willing 453 ED owner and do some testing or debugging to figure it out, but for now the situation with the 453s is unknown.
Len
2014 EV Coupe 13,750 miles
2014 EV Cabriolet 2,750 miles
Code:
-----------------------------------------
--- ED Battery Management Diagnostics ---
--- v1.0.2 ---
-----------------------------------------
Connect to OBD port - Waiting for CAN-Bus
.CONNECTED
-----------------------------------------
........Reading data....................OK
-----------------------------------------
Battery VIN: WMEEJ9AA3EK773721
Time [hh:mm]: 12:00, ODO : 21255 km
-----------------------------------------
Battery Status : OK
Battery Production [Y/M/D]: 2013/11/7
Battery-FAT date [Y/M/D]: 2013/11/8
Rev.[Y/WK/PL] HW:2013/29/0, SW:2013/29/1
-----------------------------------------
SOC : 99.5 %, realSOC: 97.8 %
HV : 389.0 V, -0.47 A, -0.18 kW
LV : 14.2 V
-----------------------------------------
CV mean : 4163 mV, dV = 23 mV
CV min : 4143 mV
CV max : 4166 mV
OCVtimer: 1728 s
-----------------------------------------
Last measurement : 4 day(s)
Measurement estimation: 0.795
Actual estimation : 0.685
CAP mean: 17977 As/10, 49.9 Ah
CAP min : 17869 As/10, 49.6 Ah
CAP max : 18239 As/10, 50.7 Ah
-----------------------------------------
HV contactor state ON, low current: 216530 s
Cycles left : 296198
of max. cycles: 300000
DC isolation : 63931 kOhm, OK
-----------------------------------------
Temperatures Battery-Unit /degC:
module 1: 21.6, 23.0, 22.2
module 2: 21.7, 22.7, 22.4
module 3: 21.7, 22.5, 21.9
mean : 22.2, min : 21.7, max : 23.0
coolant : 21.0
-----------------------------------------
# ;mV ;As/10
01;4163;17632
02;4164;17576
03;4164;17745
04;4165;17604
05;4167;17632
06;4164;17632
07;4166;17632
08;4167;17632
09;4166;17660
10;4148;17548
11;4155;17604
12;4167;17576
13;4166;17548
14;4167;17576
15;4166;17548
16;4166;17604
17;4165;17660
18;4165;17717
19;4165;17660
20;4167;17689
21;4164;17576
22;4167;17689
23;4164;17576
24;4166;17717
25;4165;17717
26;4167;17604
27;4146;17520
28;4148;17492
29;4150;17520
30;4150;17576
31;4143;17492
32;4164;17604
33;4160;17576
34;4164;17548
35;4162;17576
36;4163;17604
37;4164;17604
38;4160;17492
39;4166;17492
40;4166;17465
41;4166;17465
42;4167;17520
43;4164;17548
44;4164;17548
45;4166;17492
46;4167;17492
47;4164;17520
48;4167;17576
49;4164;17576
50;4166;17548
51;4164;17576
52;4166;17410
53;4158;17437
54;4166;17548
55;4165;17548
56;4166;17604
57;4164;17492
58;4165;17604
59;4164;17632
60;4165;17548
61;4164;17604
62;4166;17604
63;4166;17548
64;4165;17660
65;4165;17604
66;4165;17548
67;4166;17548
68;4165;17660
69;4164;17604
70;4166;17604
71;4164;17492
72;4166;17548
73;4162;17576
74;4165;17660
75;4165;17548
76;4167;17520
77;4164;17548
78;4166;17548
79;4165;17717
80;4165;17660
81;4164;17660
82;4166;17660
83;4165;17660
84;4165;17604
85;4166;17520
86;4166;17492
87;4166;17548
88;4166;17520
89;4167;17548
90;4167;17492
91;4166;17548
92;4166;17660
93;4167;17576
-----------------------------------------
Individual Cell Statistics:
-----------------------------------------
CV mean : 4164 mV, dV= 24 mV, s= 4.73 mV
CV min : 4143 mV, # 31
CV max : 4167 mV, # 5
-----------------------------------------
CAP mean: 17579 As/10, 48.8 Ah
CAP min : 17410 As/10, 48.4 Ah, # 52
CAP max : 17745 As/10, 49.3 Ah, # 3
-----------------------------------------
Voltage Distribution (dV= 24 mV):
*----------------------------->----[|=]-*
4143 09 > [4164; 4165; 4166] < 00 4167
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: 14.3 V
-----------------------------------------
Temperatures Charger-Unit /degC:
Reported : NA
Cooling plate : NA
Inlet socket : NA
-----------------------------------------
Reading data.OK
-----------------------------------------
Status Cooling- and Subsystems:
Temperature : 20.4 degC
Cooling fan : 0.0 %
Cooling pump : 64.7 %, 22 degC
: 13.8 V, 1.4 A
OTR:
Cooling fan : 5 h
Cooling pump : 2946 h
Battery heater: 0 h, OFF
Vaccum pump : 15.774 h
Pressure 1, 2 : -610 mbar, -604 mbar
-----------------------------------------
-----------------------------------------
Battery VIN: WMEEJ9AA3EK773721
Time [hh:mm]: 12:00, ODO : 21255 km
-----------------------------------------
SOC : 99.5 %, realSOC: 97.8 %
HV : 389.0 V, -0.47 A, -0.18 kW
LV : 14.2 V
-----------------------------------------