I just used the evtripplanner site to plan an 800 mile trip down the east coast. I'd like to get your input about some of my conclusions. I don't have the car yet, so just trying to get an idea of what the trip might be like.
I used an S85 RWD and left most of the condition at default except I bumped up the Payload to 250 lbs. It concluded that it would be 12:12 hours of driving time plus 3:03 hours of charge time for a total of 15:15 hours. 269.6 kWh and 337Wh/mile. It figured a net elevation change of negative 295 miles (Florida tends to be lower than other places).
Does that sound reasonable? I noticed that it planned a stop at every supercharger location along the route (a total of 7 stops) for an average of 25 minutes per stop. I first wondered why so many, since that would be average of 100 miles per segment. But then it occurred to me that no matter how many times you stop, the amount of energy you need to travel the distance is going to be the same, so if you stopped less often, you would need to charge for longer.
This gave me an enlightenment that given my inexperience with EV's may be all wet, this will be my first. I will place myself in your care to correct me where needed. It occurs to me that as long as you have a battery large enough to carry you the distance between the supercharger locations where you plan to travel, I don't see the great benefit to getting the largest battery possible. You could skip a charger, but then you would need to spend more time charging when you do stop. The S85, which is what I'm considering, has an EPA of an optimistic 265 miles, but what does that matter if I only need to go 150 mile at most in between SC's? I know that the larger battery will charge more miles in the same amount of time up that 80%, but it doesn't seem like that would make that much of a difference. I also know that there are some places in the county where you need to be able to travel longer that 150 miles to get to a supercharger, but that's not the case in my part of the southeast and east coast.
All this time I've been thinking in terms of what's the longest distance I can go without stopping to charge, but I think that's wrong headed thinking. You're going to be spending the same about of time charging, so why not break it up to as many times as possible? It will be healthier for you and actually speed up the charging if you're always charging in the fast part of the charge curve as opposed to the slower upper end of the battery capacity.
This may be totally elementary to the experienced, or maybe I'm missing some crucial element. What do you think?
I used an S85 RWD and left most of the condition at default except I bumped up the Payload to 250 lbs. It concluded that it would be 12:12 hours of driving time plus 3:03 hours of charge time for a total of 15:15 hours. 269.6 kWh and 337Wh/mile. It figured a net elevation change of negative 295 miles (Florida tends to be lower than other places).
Does that sound reasonable? I noticed that it planned a stop at every supercharger location along the route (a total of 7 stops) for an average of 25 minutes per stop. I first wondered why so many, since that would be average of 100 miles per segment. But then it occurred to me that no matter how many times you stop, the amount of energy you need to travel the distance is going to be the same, so if you stopped less often, you would need to charge for longer.
This gave me an enlightenment that given my inexperience with EV's may be all wet, this will be my first. I will place myself in your care to correct me where needed. It occurs to me that as long as you have a battery large enough to carry you the distance between the supercharger locations where you plan to travel, I don't see the great benefit to getting the largest battery possible. You could skip a charger, but then you would need to spend more time charging when you do stop. The S85, which is what I'm considering, has an EPA of an optimistic 265 miles, but what does that matter if I only need to go 150 mile at most in between SC's? I know that the larger battery will charge more miles in the same amount of time up that 80%, but it doesn't seem like that would make that much of a difference. I also know that there are some places in the county where you need to be able to travel longer that 150 miles to get to a supercharger, but that's not the case in my part of the southeast and east coast.
All this time I've been thinking in terms of what's the longest distance I can go without stopping to charge, but I think that's wrong headed thinking. You're going to be spending the same about of time charging, so why not break it up to as many times as possible? It will be healthier for you and actually speed up the charging if you're always charging in the fast part of the charge curve as opposed to the slower upper end of the battery capacity.
This may be totally elementary to the experienced, or maybe I'm missing some crucial element. What do you think?