4 ms·
I wonder where they're getting 315 miles of range from in the P100D. The P90D has 270 miles of range, or 3 miles/kWh. For 100kWh it should be 300 miles of range
by kylec 10y ago
I wonder where they're getting 315 miles of range from in the P100D. The P90D has 270 miles of range, or 3 miles/kWh. For 100kWh it should be 300 miles of range. At 315 miles of range the P100D is 5% more efficient than the P90D.
If the upcoming 100D is also 5% more efficient than the current 90D, that car would get somewhere around 343 miles of range.
- sounds 10y agoJust a guess but perhaps the added kWh of the P100D is all battery weight, so energy density per pound goes up overall?
- lscharen 10y agoProbably because the batteries are not discharged to zero, so there is a "floor". If the floor is X kWh, then we can solve for X based on these two ranges assuming the kWh / mile consumed is the same ratio, r. r * (90 - X) = 270 r * (100 - X) = 315 Solving these two equations gives me X = 30 kWh as a fixed reserve in the battery packs assuming r = 4.5 mi / kWh.
- mikeash 10y ago4.5 miles/kWh is hugely optimistic, and a 30kWh reserve is highly unrealistic. Tesla's range numbers are based on roughly 3.3 miles/kWh (which is reasonably realistic) and the floor is maybe 5kWh. I can't explain the discrepancy, but it's definitely not just the floor. Either they've made some sort of efficiency improvement, or the difference between the two battery packs is more than 10kWh and they've just rounded off the figures.