So while driving, I tend to stare at my Wh/Mile rating and wonder about how the numbers correlate. I've noticed that to even get close to the rated miles, I have to hover around (a bit below actually) 300Wh/mile.
But a back-of-the-envelope calculation says that to get my rated 260 miles at full charge (264 often, but it drops to 260 or so after I unplug), you'd need:
85000 Wh / 260 miles = 327 Wh/mile.
Anyone who's ever driven at 75mph and getting ~330 Wh/mile knows they're not getting the rated range.
So out of curiousity, I decided to watch my battery indicator (the big one on the charging screen) change. The 10% marks are somewhat clear to look at. I started from 90% in the morning and watched how long it takes to get to the 80% mark. I then look at my "energy used" indicator.
At 7.4 kWh used, it hit the 80% mark. Now granted this doesn't mean it's actually at 80% since it the battery indicator moves in fairly course intervals. So I waited until it gets to one tick below 80%. I was at 7.8 kWh used.
Extrapolating, this would mean that to get from 90% to 80%, I used roughly 7.6 kWh.
I'm going to see how much it takes to get from 80% to 70%. Perhaps the battery indicator isn't linear. But extrapolating based on this, it means that the battery capacity is 76 kWh, roughly 10% less than the advertised. Of course, I fully understand that 10% is within reason for any spec given. Between reserved charge (for when the battery is 0 and you still need to move), manufacturing variations and battery capacity decay (I've had it my car for 6 months, with roughly 12.5k miles), having 90% of the specified capacity is perfectly understandable.
That being said, what's everyone else seeing with their daily commute? Is the battery indicator accurate? Has anyone run it down to 0 from 100% charge and looked at the final kWh used?
But a back-of-the-envelope calculation says that to get my rated 260 miles at full charge (264 often, but it drops to 260 or so after I unplug), you'd need:
85000 Wh / 260 miles = 327 Wh/mile.
Anyone who's ever driven at 75mph and getting ~330 Wh/mile knows they're not getting the rated range.
So out of curiousity, I decided to watch my battery indicator (the big one on the charging screen) change. The 10% marks are somewhat clear to look at. I started from 90% in the morning and watched how long it takes to get to the 80% mark. I then look at my "energy used" indicator.
At 7.4 kWh used, it hit the 80% mark. Now granted this doesn't mean it's actually at 80% since it the battery indicator moves in fairly course intervals. So I waited until it gets to one tick below 80%. I was at 7.8 kWh used.
Extrapolating, this would mean that to get from 90% to 80%, I used roughly 7.6 kWh.
I'm going to see how much it takes to get from 80% to 70%. Perhaps the battery indicator isn't linear. But extrapolating based on this, it means that the battery capacity is 76 kWh, roughly 10% less than the advertised. Of course, I fully understand that 10% is within reason for any spec given. Between reserved charge (for when the battery is 0 and you still need to move), manufacturing variations and battery capacity decay (I've had it my car for 6 months, with roughly 12.5k miles), having 90% of the specified capacity is perfectly understandable.
That being said, what's everyone else seeing with their daily commute? Is the battery indicator accurate? Has anyone run it down to 0 from 100% charge and looked at the final kWh used?
