As the parent comment said, moving high currents in cables isn’t that difficult. Mosfets are small devices, but cables have a lot of surface area and mass, so e

As the parent comment said, moving high currents in cables isn’t that difficult. Mosfets are small devices, but cables have a lot of surface area and mass, so even dissipating kW into a cable is not an issue and can be solved with liquid cooling. Imagine we used 35mm2 at 0.55 Ohm/km and we have 2 poles. If the charging cable is 3m including inside the device, that’s 2x3 = 6m. That’s 6.6 mOhms total, so I2R on that at 500A is only 1.65kW, which is nothing.