lonndoggie said:
I'm another guy trying to lose that 4th bar, in my case by mid-June, who tried to keep it topped-off for a while. Easy to do, as I have a short commute and free chargers at work. During about a 3 week stretch that I did this, I checked AHr frequently. It started at 44.50, and ended up at 44.69! Ever time I checked, it was either same as the previous, or went up. Depressing.
I was getting steady AHr decline until I did a QC. This happened twice, and my current belief is topping 100% often or QC will improve battery cell balancing which in turn raises AHr. However it might be moot point to look at AHr to that degree as I presume the car will try really hard to balance the cells before dropping a bar anyway. This also sits well with me to explain why there's such variance in battery loss timing compared with AHr.
Here's the updated data for those interested. Hopefully I'll make it on time...
Date Time odo mi AHr SOH Hx QC
1/5/16 7:43:22 53482.6 44.792 68% 47.42 44
1/7/16 7:46:13 53559.7 44.752 68% 47.32 44
1/9/16 10:03:54 53637.4 44.72 68% 47.28 44
1/11/16 7:45:22 53718.8 44.739 68% 47.27 44
1/13/16 7:44:39 53792.7 44.556 67% 46.93 44
1/15/16 7:44:33 53859.2 44.549 67% 47.03 44
1/16/16 7:47:13 53918.8 44.588 67% 47.06 44
1/26/16 7:50:27 54340.1 44.628 68% 47.13 46
1/27/16 7:44:31 54381.8 44.595 67% 47.08 46
1/29/16 7:42:52 54442 44.542 67% 46.96 46
2/4/16 7:46:30 54563.8 44.398 67% 46.71 46
2/5/16 7:46:13 54602.4 44.372 67% 46.70 46
2/8/16 7:43:57 54645.8 44.313 67% 46.59 46
2/9/16 7:45:08 54683.1 44.201 67% 46.43 46
2/10/16 7:45:37 54722.3 44.155 67% 46.38 46
2/11/16 7:44:30 54758.9 44.116 67% 46.31 46
2/12/16 7:41:32 54792.5 44.116 67% 46.29 46
2/13/16 7:45:45 54823.6 44.083 67% 46.22 46
2/16/16 7:44:45 54932.9 44.096 67% 46.30 47
2/17/16 7:43:27 54978.3 44.096 67% 46.22 47
2/18/16 7:44:02 55014.3 44.063 67% 46.26 47
2/19/16 7:46:51 55063.4 44.103 67% 46.27 47
2/23/16 7:44:20 55141.1 44.129 67% 46.33 47
2/24/16 7:42:28 55186.4 44.077 67% 46.19 47
2/25/16 7:48:34 55229.9 43.972 67% 46.05 47