Johan
Ex got M3 in the divorce, waiting for EU Model Y!
One owner said the car reported 123 kW initially. This was at Vinje, the very recently opened SC in Norway (latest generation).
You can install our site as a web app on your iOS device by utilizing the Add to Home Screen feature in Safari. Please see this thread for more details on this.
Note: This feature may not be available in some browsers.
It can't be less. The entire battery pack contains 85 kWh of energy. So an 85 kW Supercharger would fill an empty pack in one hour. Which is 1C.
135 kW of power would charge it at 135/85= 1.6C
I am probably mistaken and have no clue what I'm talking about, but I thought that the "C" indicated the maximum discharge/charge rate for the pack. So say, on my S85 when I floor it, the inverter demands about 270Kwh from the pack. Let's just say that is the actual max discharge rate for the pack (it's probably MUCH more). That means that the 135kw SC is only charging at about .5C.
I swear I read this on the forum at some point.....then again.....I might have misunderstood/imagined it....
I am probably mistaken and have no clue what I'm talking about, but I thought that the "C" indicated the maximum discharge/charge rate for the pack. So say, on my S85 when I floor it, the inverter demands about 270Kwh from the pack. Let's just say that is the actual max discharge rate for the pack (it's probably MUCH more). That means that the 135kw SC is only charging at about .5C.
I swear I read this on the forum at some point.....then again.....I might have misunderstood/imagined it....
My understanding is that this is a popular theory not substained fact. Perhaps you have some newer information you could link to? Thanks!If you could continue to draw that amount of power, the pack, which has 85 kWh of energy, would be depleted in about 85/270*60= 19 minutes. Which is a 60/19= approx. 3C discharge rate. Which, by the way, the Model S battery can only sustain for brief periods of time before the car's computer will limit power output due to battery over heating issues.
My understanding is that this is a popular theory not substained fact. Perhaps you have some newer information you could link to? Thanks!
It is basic knowledge about battery management. If you discharge a battery at such a high rate you are going to run into trouble pretty quick. The losses in the battery itself and the entire electrical drive train is substantial. At normal driving the losses are 10%. Double the power and you quadruple the ohmic losses. Drawing 200-300 kW out of the battery will probably have total losses around 50 kW or more. The Model S is clearly not designed to handle that much cooling and will limit the power. Also the voltage in the cells will drop below a healthy level and cause permanent damage. It's fine do do it for short periods of time like it is common in normal driving. But honestly I can' think of a situation, other than a large circular race track that allows full throttle 100% of the time, where you could possibly run the car at full load for a extended time.
Yes some electric powered remote cars and helicopters discharge at that rate but they don't come with an 8 year warranty and those batteries die within a few months when used that way on a daily basis.
Very interesting was the amount of energy I was able to get out of the battery. 0 Typical Range was reached 100m (90yrds) in front of the garage. So the Zero Mile protection as well as the Block Protection were untouched. 71,2 kWh came out of the battery. With these 9 kWh protection the battery just gave 80,2 kWh (instead of 85 kWh).
This is normal, because Peukert's Law says, that higher currents result in more losses. I compared this high speed discharging with a typical discharging of mine at an average of 204 Wh/km (328 Wh/mi). I got more (74,3 kWh) out of the battery during slow discharging. I also calculated the Kapa of the Peukert Function. It resulted in a value between 1.03 and 1.04, which is significantly better than a standard Li-Ion battery (1.05). This shows the high end chemistry of the cells in our cars.
There’s also speculation that the power limit could be to prevent rotor overheating.