Older Tesla model with higher charging power on superchargers. From less than 100 kW to about 140 kW • ELECTRIC CARS

When buying a used Tesla Model S or X, you should look for vehicles with [about] 75, 90 and 100 kWh batteries. They allow you to reach a maximum charging power of up to 140 kW, although for some time they only accelerate to temperatures of about 1 ° C (up to 95 kW for the Model X P90DL).

Tesle Model S / X 75, 90, 100 with charging up to 140 kW

Older Tesla Model S and X models had a built-in limit that resulted in a gradual decrease in maximum charging power. The battery management mechanism, BMS, counted the fast charges and controlled the replenishment of energy in such a way that the machines, after several years of operation, reached a level slightly above 1C. The same thing happened to Nyland in his old, already sold Model X P90DL ("Optimus Prime") - the information was confirmed when the battery in his car was replaced.

Optimus Prime, or Tesla Model X P90D by Bjorn Nyland

The limitation disappeared some time ago with one of the subsequent software updates. Now Nyland was able to measure the maximum load capacity of his old car. It turned out that the car is capable of developing a power of 140 kW, which with a net power of 82 kWh means more than 1,7 ° C:

The Tesla described above delivers the highest charging power in the 10 to 40 percent range. (green line), then the charging speed drops below the original performance (blue line). So if we care about time, we will drain to ~10 percent and make sure that the battery level does not exceed 40, 50 percent at most - then the journey will be the fastest.

The update did not apply to Tesla with batteries marked "85". (Net power ~ 77,5 kWh). It looks like they were using older chemistry that tends to degrade more quickly. Therefore, these options should not be expected to suddenly start reaching higher charging capacities on superchargers / fast chargers.

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