danrjones
Well-known member
lorenfb said:danrjones said:jmurtagh13 said:....Date.......SOH.......HX......AH.....Chg
03/09/2018 99.10 98.86 115.00
07/14/2018 97.13 111.58 112.13 -1.97
09/21/2018 96.15 111.74 111.00 -0.98
10/18/2018 94.91 112.07 109.56 -1.24
12/31/2018 94.77 111.47 109.40 -0.14
01/15/2019 93.69 111.75 108.16 -1.08
01/21/2019 92.21 111.97 106.45 -1.48
03/01/2019 92.14 112.26 106.37 -0.07
04/06/2019 92.09 112.27 106.31 -0.05
06/13/2019 91.34 113.00 105.44 -0.75
07/01/2019 91.25 113.66 105.34 -0.09
07/10/2019 91.20 113.80 105.28 -0.05
07/12/2019 91.67 113.83 105.83 +0.47
07/28/2019 91.60 114.00 105.74 -0.07
09/10/2019 91.40 113.57 105.51 -0.20
10/13/2019 91.92 113.52 106.11 +0.52
11/11/2019 91.86 111.66 106.04 -0.06
12/10/2019 91.84 111.83 106.02 -0.02
01/10/2020 91.80 112.26 105.97 -0.04
02/10/2020 91.77 112.07 105.94 -0.03
03/10/2020 91.74 112.16 105.90 -0.03
04/10/2020 92.12 111.46 106.34 +0.38
One thing I find interesting is that HX (if it even means anything) does not seem to be as uniform from driver to driver. In the data above the car has a SOH of 92.12 and an HX of 111.46, but at one time the HX had hit 114. My HX is lower, at only 109.17, and yet my SOH as of this AM is 90.13. My HX has gradually increased more or less, except the one time I fast charged, and that caused a large upward spike for about 2 weeks. If HX is in someway related to internal resistance of the pack, say caused by use/cycles/ or heat, one would expect higher HX to lead to lower SOH, would you not?
HX has become meaningless for Leaf2 vehicles. Previously, it was the ratio of battery resistance (new/present) as a percent and tracked SOH.
Is HX a value on the bus or is it being calculated by LeafSpy? I thought it was an actual piece of data on the bus. Why would Nissan have a piece of data on the bus that is completely useless? It is certainly possible but... why?