Hacker News Reader

The signalling won't work, so nothing will happen.

How do the endpoints know the difference between a J1772 or CCS1 adapter, if the adapters are passive? Don't they use the same signalling pins?

No power is provided until negotiation using the signalling authorises the power transfer.

Sure, but the vehicle and charger both support DC. How do they know that the adapter in the middle does not?