I didn't drive my car for about 30 days. It sat 'dark', in standard mode, with SOC falling from around 84% to 27%. It really hasn't been driven much this year (weather exceptionally wet, and too many kids activities requiring >2seats).
So, yesterday I plugged it in and gave it a full charge. It stopped at 77%, and wouldn't top up greater than that.
I tried a range mode charge, and that didn't improve it.
ESS SOC screen is showing SOC LIM 77% MIN 77% MAX 97% (with a CAC of 145.55Ah). I tried a drive, and car behaves fine. After about 20km drive to work, ESS SOC showed LIM 71% MIN 71% MAX 92%.
So, my issue is that one (or more) bricks are low (77%) and one (or more) are high (97%); things are badly out of balance. It could be a bad brick, I guess.
Looking at VMSparser -b, I see the following limiting bricknumber changes (cutting out all the bits where the brick didn't change):
So, seems that #54 has been the limiting one all year.
A sorted ahr.log shows:
So, that #74 doesn't look good (but can't really understand why #54 shows up as the limiting brick where #74 looks worse.
Lowest/Highest
32289/33608 = 0.9607
739196/950686 = 0.7775
I'm guessing the car is getting upset about the SOC guess (22%) vs the voltage (4%) difference. The SOC guess on #74 is scary; 20% off from it's nearest neighbour (#73).
So, I could either have a bad brick (#74), things are just out of balance, or the SOC calculation on that brick is wrong (sensor, etc).
Anybody got any good suggestions? Options are (a) drive it to give it some exercise, (b) charge it to as much as I can put in and leave it there to sit, or (c) drive it to Tesla. Given that the voltage looks ok, and it looks like a SOC estimate thing, perhaps the best is to drive it down to 20% or so then try to charge back up as much as possible.
So, yesterday I plugged it in and gave it a full charge. It stopped at 77%, and wouldn't top up greater than that.
I tried a range mode charge, and that didn't improve it.
ESS SOC screen is showing SOC LIM 77% MIN 77% MAX 97% (with a CAC of 145.55Ah). I tried a drive, and car behaves fine. After about 20km drive to work, ESS SOC showed LIM 71% MIN 71% MAX 92%.
So, my issue is that one (or more) bricks are low (77%) and one (or more) are high (97%); things are badly out of balance. It could be a bad brick, I guess.
Looking at VMSparser -b, I see the following limiting bricknumber changes (cutting out all the bits where the brick didn't change):
Code:
timestamp, brickahmin, brickahave, bricknumber
12/04/2012 17:53:45, 157.05, 158.31, 5
04/22/2013 22:07:22, 156.48, 157.85, 5
04/23/2013 22:07:22, 156.37, 157.68, 9
05/09/2013 16:30:43, 155.17, 156.54, 9
05/10/2013 16:30:43, 155.23, 156.60, 5
05/24/2013 16:47:55, 155.40, 156.71, 5
05/25/2013 16:47:56, 155.46, 156.88, 9
08/01/2013 22:21:06, 154.83, 156.48, 9
08/02/2013 22:21:06, 154.20, 155.86, 81
10/03/2013 22:44:45, 153.92, 155.74, 81
10/04/2013 22:44:45, 153.69, 155.57, 5
12/09/2013 15:13:06, 152.15, 154.03, 5
12/10/2013 15:13:07, 152.38, 154.26, 85
01/13/2014 15:55:46, 152.38, 154.26, 85
01/14/2014 15:55:46, 152.27, 154.09, 5
03/10/2014 21:02:41, 152.15, 153.98, 5
03/11/2014 21:02:41, 152.09, 153.92, 85
03/18/2014 21:02:42, 152.09, 153.92, 85
03/19/2014 21:02:42, 152.21, 154.03, 5
06/29/2014 00:15:46, 152.15, 153.92, 5
06/30/2014 00:15:47, 152.04, 153.86, 81
07/31/2014 00:26:15, 151.87, 153.58, 81
08/01/2014 00:26:16, 151.47, 153.41, 5
09/15/2014 00:26:23, 151.24, 153.06, 5
09/16/2014 00:26:22, 150.84, 152.95, 54
01/11/2016 21:20:14, 147.82, 150.27, 54
01/12/2016 21:20:14, 147.19, 149.41, 9
01/19/2016 21:20:15, 147.19, 149.41, 9
01/20/2016 21:20:16, 147.19, 149.41, 54
01/26/2016 22:23:31, 147.25, 149.47, 54
01/27/2016 22:23:31, 146.96, 149.19, 9
02/24/2016 22:23:33, 147.13, 149.36, 9
02/25/2016 22:23:33, 147.25, 149.53, 81
03/03/2016 22:23:34, 147.25, 149.59, 81
03/04/2016 22:23:34, 146.91, 149.24, 9
04/25/2016 11:02:16, 146.22, 148.45, 9
04/26/2016 11:02:17, 146.22, 148.39, 81
04/27/2016 11:02:17, 145.65, 147.82, 9
10/11/2016 11:51:15, 146.22, 148.50, 9
10/12/2016 11:51:16, 146.34, 148.62, 81
10/18/2016 14:23:19, 146.34, 148.62, 81
10/19/2016 14:23:20, 146.39, 148.73, 9
11/10/2016 14:23:25, 145.65, 147.88, 9
11/11/2016 14:23:26, 145.37, 147.70, 81
11/24/2016 14:23:29, 145.37, 147.76, 81
11/25/2016 14:23:30, 145.54, 147.99, 9
03/31/2017 14:13:20, 145.42, 147.82, 9
04/01/2017 14:13:19, 145.08, 147.76, 54
07/02/2017 17:51:54, 145.25, 147.82, 54
So, seems that #54 has been the limiting one all year.
A sorted ahr.log shows:
Code:
brick soc v
74 739196 32289
73 916631 33366
0 916631 33368
54 916631 33368
72 916631 33368
55 922448 33406
1 922448 33408
63 928199 33448
64 933899 33486
80 933899 33486
...
33 950686 33608
34 950686 33608
35 950686 33608
43 950686 33608
44 950686 33608
53 950686 33608
62 950686 33608
8 950686 33608
88 950686 33608
98 950686 33608
So, that #74 doesn't look good (but can't really understand why #54 shows up as the limiting brick where #74 looks worse.
Lowest/Highest
32289/33608 = 0.9607
739196/950686 = 0.7775
I'm guessing the car is getting upset about the SOC guess (22%) vs the voltage (4%) difference. The SOC guess on #74 is scary; 20% off from it's nearest neighbour (#73).
So, I could either have a bad brick (#74), things are just out of balance, or the SOC calculation on that brick is wrong (sensor, etc).
Anybody got any good suggestions? Options are (a) drive it to give it some exercise, (b) charge it to as much as I can put in and leave it there to sit, or (c) drive it to Tesla. Given that the voltage looks ok, and it looks like a SOC estimate thing, perhaps the best is to drive it down to 20% or so then try to charge back up as much as possible.