Siemens’ game-changing EV charger and solar adapter

[Elcam84]

Originally Posted by NiHaoMike

If the concern is overloading the circuit, the automated switch would prevent that by only allowing the original load or EV charging to operate, not both at once.

The charger (glorified extension cord) has no idea how much current is being pulled by other devices on the same circuit. Hence why NEC requires a dedicated circuit for car chargers.
The battery charger is just another load on the circuit.