TaYcanAficionado
Active Member
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Recent 2021 4S CPO owner.
I've noticed at more than one occassions than when the car has a SoC of around 30-35%, the SoC goes down extremely fast, but the range indicator ("guess-o-meter" or "GOM") doesn't. In other words, SoC appears to go down disproportionately in comparison with the range indicator.
Example from today: began my trip to work (16 miles/26 kms) at 32% SoC. GOM showing 75 miles (120km) at the beginning of the trip. External temp was 60f (16celsius).
At the end of the 16-mile (26kms) trip, I had a SoC of 23%, with a consumption of 25.75kwh/100mi (16kwh/100km).
Which means that this trip should have "cost" me around 4.5kwh or less in battery capacity.
So, mathematics say that I "lost" 9% SoC for 4.5 kwh, which makes absolutely no sense; as it the battery had a capacity or around 51kwh...
Again, the range shown wasn't really affected (actually, car was showing 61 miles/99kms left at the end of the trip. Higher in proportion to what was shown at the beginning of the trip, considering the miles driven).
I can't bet on the scenario of a battery failure, since the above only happens at lower Soc - never on higher SoC. WRS1 completed 2 months ago and no battery problems.
Which leads me to the only reasonable explanation that, as you drive the car, not only the range estimator but also the battery SoC adapts to your driving style....
meaning that when I had 75 miles in it, as I drove the car, it "considered" that 75 miles are more like, say, 28% SoC according to my driving style, than 32% initially shown.
That's my second electric car and never noticed such a thing with my previous one. I always had the impression that SoC is more of an indication of kwh stored at a specific point in time in the battery; not something that "adapts" to your driving style (like the range estimator).
But if the above isn't true/can't be confirmed by other owners, then something else is wrong, and I can't figure out what...
Any ideas really appreciated.
I've noticed at more than one occassions than when the car has a SoC of around 30-35%, the SoC goes down extremely fast, but the range indicator ("guess-o-meter" or "GOM") doesn't. In other words, SoC appears to go down disproportionately in comparison with the range indicator.
Example from today: began my trip to work (16 miles/26 kms) at 32% SoC. GOM showing 75 miles (120km) at the beginning of the trip. External temp was 60f (16celsius).
At the end of the 16-mile (26kms) trip, I had a SoC of 23%, with a consumption of 25.75kwh/100mi (16kwh/100km).
Which means that this trip should have "cost" me around 4.5kwh or less in battery capacity.
So, mathematics say that I "lost" 9% SoC for 4.5 kwh, which makes absolutely no sense; as it the battery had a capacity or around 51kwh...
Again, the range shown wasn't really affected (actually, car was showing 61 miles/99kms left at the end of the trip. Higher in proportion to what was shown at the beginning of the trip, considering the miles driven).
I can't bet on the scenario of a battery failure, since the above only happens at lower Soc - never on higher SoC. WRS1 completed 2 months ago and no battery problems.
Which leads me to the only reasonable explanation that, as you drive the car, not only the range estimator but also the battery SoC adapts to your driving style....
meaning that when I had 75 miles in it, as I drove the car, it "considered" that 75 miles are more like, say, 28% SoC according to my driving style, than 32% initially shown.
That's my second electric car and never noticed such a thing with my previous one. I always had the impression that SoC is more of an indication of kwh stored at a specific point in time in the battery; not something that "adapts" to your driving style (like the range estimator).
But if the above isn't true/can't be confirmed by other owners, then something else is wrong, and I can't figure out what...
Any ideas really appreciated.
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