Don't Forget: Many DC Fast Charging Adapters Are Prohibited By Operators
Briefly

The use of charging adapters is becoming more common at DC fast-charging stations in the U.S., but many operators prohibit non-approved devices. Tesla, EVgo, and Electrify America restrict the use of adapters to those supplied by vehicle manufacturers to avoid complications. Specifically, Tesla and EVgo allow only certain UL2252 certified adapters for charging, primarily from authorized suppliers. ChargePoint further advises against using any adapters or extension cables, reinforcing the need for users to check each operator's terms of service before charging.
Read at InsideEVs
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