Minor GOM observation

[Tyldum]

Just thought I'd share my range stats.
This is a FE (AWD LR). Now I leave in northern Norway, so the number of days we hit >20C are close to nil.
I'm charging every night up to 90%, and most days I drive it down to 80% during my commute ("climate" and "outside temperature" are significant as a result).
Now, I'm reading off the API the status of the car (SoC, alarm status, door status, etc) and recording it. So I thought I'd share a graph that shows the incredible variance of the GOM over the course of a month of pretty consistwnt usage of the car - basically just my commute and the weekly errands.

The graph is made up of the GOM range whenever the SoC has been equal to 90%. It varies from 420 km to 285km...

So what causes the GOM to vary so much? I really have no idea. I do also track outside temperature, but the correlation to the GOM range is very minor. I mean it's there, but only slighlty. Also, the temps have been very consistent during this period, no big fluctuations.

And before I get a brigade of "ignore the GOM", yes I largely do. This is not a post to complain about the range nor the GOM, just illustrating what the GOM shows for me at 90% SoC for a month.

Range is on the left scale, in kilometers.

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[Marcel]

Just thought I'd share my range stats.
This is a FE (AWD LR). Now I leave in northern Norway, so the number of days we hit >20C are close to nil.
I'm charging every night up to 90%, and most days I drive it down to 80% during my commute ("climate" and "outside temperature" are significant as a result).
Now, I'm reading off the API the status of the car (SoC, alarm status, door status, etc) and recording it. So I thought I'd share a graph that shows the incredible variance of the GOM over the course of a month of pretty consistwnt usage of the car - basically just my commute and the weekly errands.

The graph is made up of the GOM range whenever the SoC has been equal to 90%. It varies from 420 km to 285km...

So what causes the GOM to vary so much? I really have no idea. I do also track outside temperature, but the correlation to the GOM range is very minor. I mean it's there, but only slighlty. Also, the temps have been very consistent during this period, no big fluctuations.

And before I get a brigade of "ignore the GOM", yes I largely do. This is not a post to complain about the range nor the GOM, just illustrating what the GOM shows for me at 90% SoC for a month.

Range is on the left scale, in kilometers.

If you mainly use around 10% daily it is not suprising that minor differences translate to bigger differences for your GOM...

 

[RedStallion]

We don't know exactly how GOM works, but presumably it's efficiency multiplied by capacity. The efficiency it's presumably measuring as you drive, you may want to record that too to get a better picture. Regarding capacity, we can only speculate, it may use a nominal pack capacity or something else, but assuming your battery is not rapidly degrading it should be a constant.
In my car GOM showing more or less the same after each charge.

 

[JSeis]

I find GOM tends to be driven by consistency of M/KWh. If I come home after a 90 mile RT commute at 4.1 M/KWh then my 90% battery GOM estimate can be up to 219 miles which is pretty good. But a cooler day it might be 3.5 M/KWh which drops GOM to low 200s.

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