99% of Chademo plugs are UP TO 125 Amps
. And up to 500V.
Often even less due to grid limitations.
Tesla pack is way below 400V when at 50%.
So if voltage is 350V, multiplied with 125A = 43,75kW.
Voltage rises and rises until it reaches 400-402V and then current
rapidly drops as maximum voltage has been reached.
As 50kW is not enough for massive packs...voltage will not spike even when DC-charging.
24kWh Leaf acts similarly. It reaches (depending on battery temperature) maximum voltage at around 50%.
Up to that point, it can pull full 125A. After that, voltage is limited to around 396V and current drops.
Look at those screenshots.
So it literally goes from 10% to 50% in 10 minutes, after that, things... calm down a lot