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In terms of miles/kWh the X is the least efficient of all. So the same charge rate results in fewer miles added per hour.
But you’re talking about USAGE of the 2 vehicles. Let’s say you took both batteries and their onboard charge controllers out of an S and X. When you plug them in to Charge the battery, if the hardware and software are the same (for charging) why wouldn’t they charge at the same rate?
technically it charges at the same rate.
However the amount of energy a model X needs to propel it the same distance as a Model S is more, and even more for a model 3. But you're still charging at the same rates. So you're adding the same amount of energy, just less "miles equivalent" of that energy cuz the model x uses more...if that makes sense hah.
Charge rate is measured by Volts and Amps. (kw).
Mi/Hr is not a measurement of charge rate, it is just an approximation so people can quantify how fast they're charging because obviously not everyone understands Volts/Amps.
If you plug a Model S & X into a supercharger, and they both read 102kw, then they are charging at the same rate. One will have a different mi/hr measurement than the other though, because that is based on the wh/mi formula, and a model x uses more wh/mi than a model s.
The explanations sound complicated, but here's a really simple analogy to be able to instinctively see the difference like a light bulb moment.But you’re talking about USAGE of the 2 vehicles. Let’s say you took both batteries and their onboard charge controllers out of an S and X. When you plug them in to Charge the battery, if the hardware and software are the same (for charging) why wouldn’t they charge at the same rate?
The explanations sound complicated, but here's a really simple analogy to be able to instinctively see the difference like a light bulb moment.
Let's say you are filling a Ford F-350 pickup truck and a Ford Fiesta subcompact car at the same gas pump. The pump is supplying some flow rate of gallons per minute. The same rate of fuel is going into both vehicles at the same rate, right? But the Fiesta is getting a lot more "miles" per minute, because each of those gallons gives it a lot more distance. So the efficiency ratings of like 20 mpg for the truck and 40 mpg for the small car directly related to the "miles per minute" filling rate.