danrjones
Well-known member
As a side note, I have never charged the car above 85%. I've been keeping it between about 45% and 80% normally. Should I charge it to 100% once just to see the data?
jdcbomb said:Why did the Hx value in my 40 kWh start off in the mid 90's and now with a SOH of 95.70 the Hx is around 113. Is there any technical reason?
DaveinOlyWA said:jdcbomb said:Why did the Hx value in my 40 kWh start off in the mid 90's and now with a SOH of 95.70 the Hx is around 113. Is there any technical reason?
Yes there is a technical reason but specifics can only be supposed.
I "think" the change in chemistry and resulting change in resistance values has caused the higher than normal reading. My Hx has been between 118-119 for months now.
lorenfb said:DaveinOlyWA said:jdcbomb said:Why did the Hx value in my 40 kWh start off in the mid 90's and now with a SOH of 95.70 the Hx is around 113. Is there any technical reason?
Yes there is a technical reason but specifics can only be supposed.
I "think" the change in chemistry and resulting change in resistance values has caused the higher than normal reading. My Hx has been between 118-119 for months now.
Nissan most likely didn't modify the algorithm that calculated Hx (the ratio of the battery's conductances - present/initial) based
on the later batteries, e.g. using the older batteries' initial conductance value which would cause Hx to be greater than 100%.
goldbrick said:lorenfb said:Nissan most likely didn't modify the algorithm that calculated Hx (the ratio of the battery's conductances - present/initial) based
on the later batteries, e.g. using the older batteries' initial conductance value which would cause Hx to be greater than 100%.
Are you sure that is the algorithm used to calculate Hx?
A tried and true method to stop LEAF battery degradation.LeftieBiker said:I haven't checked it this Summer.
DougWantsALeaf said:So the 40 KW battery is degrading at the same rate as earlier batteries?
DougWantsALeaf said:So the 40 KW battery is degrading at the same rate as earlier batteries?
My conclusion about the 'Wolf' pack is that the range of experiences is wide. It would not surprise me if the 40 kWh pack fairs similarly ... which would actually be good news since it is a bigger pack and carries a longer warranty than the 24 kWh LEAFs. I would not care to play the LEAF lottery with a new car purchase but it does suggest that informed purchase of a well behaving 40 kWh LEAF coming off lease would be reasonable for gentle use in non-hot climates.LeftieBiker said:DougWantsALeaf said:So the 40 KW battery is degrading at the same rate as earlier batteries?
My conclusion, subject to change with more data, is that the 40kwh pack degrades much like the Wolf Pack (4/'13 - 2014): it doesn't degrade fast if kept cool but does if kept hot. It may be more sensitive to moderately high temps than the Wolf pack, which if true means that multiple QC sessions should be avoided in warm weather...
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