O in a hexagon: DC through a Type 2 connector

DC charging through a Type 2 vehicle connector and vehicle inlet, in the 50 V to 500 V range.

What to do

Match the letter: O is DC through the Type 2 configuration, which is a different identifier from C (AC through Type 2). If your car's inlet does not show O, check your vehicle's manual before using an O-labelled DC connector.

What it looks like: A capital O inside a horizontal hexagon, white or silver on black.
Where you find it: By the charging inlet of a vehicle; on the connector of a charging cable; in the owner's manual.
Kind: electric-vehicle charging identifier
Set by: EN 17186:2019, identifiers for the electrical interface (a hexagon), required by Directive 2014/94/EU Article 7; letter as given in the annex table of the ACEA/ChargeUp Europe/CharIN/Eurelectric guides

Can my car charge from it?

“Consumers will only need to match the label of their vehicle with the corresponding label on the charging station.”
— ACEA, ACEM, ChargeUp Europe, CharIN and Eurelectric, Labelling for Electrically Rechargeable Road Vehicles and Charging Infrastructure: information for consumers (PDF)

“The European legislation requires the labels only for the new vehicles placed on the market for the first time or registered as of 20 March 2021.”
— ACEA, ACEM, ChargeUp Europe, CharIN and Eurelectric, Labelling for Electrically Rechargeable Road Vehicles and Charging Infrastructure: information for consumers (PDF)

Check your vehicle's manual or the label inside the filler flap (on an electric car, the label by the charging inlet). We do not say which makes or models take this connector.

Official guidance:

In detail

The annex table: configuration Type 2, vehicle connector and vehicle inlet, 50 V to 500 V, identifier O, listed under the identifiers for DC charging.
The same Type 2 configuration used for AC is C; the table gives the DC use its own letter.

What it does not mean

O is not the letter C: a Type 2 inlet labelled C (AC) is not thereby labelled for DC.

Labels that go with it

C in a hexagon: Type 2 AC chargingAC charging through the Type 2 configuration, up to 480 V RMS:…K in a hexagon: Combo 2 (CCS) DC, 50–500 VDC charging through configuration FF, the Combo 2 connector, in…

Sources

Each document was fetched and read on the date shown; the clause or section is the one that sets or explains this label.

ACEA, ACEM, ChargeUp Europe, CharIN and Eurelectric: Labelling for Electrically Rechargeable Road Vehicles and Charging Infrastructure: information for consumers (PDF) — Annex, Identifiers for DC charging: Type 2, vehicle connector and vehicle inlet, 50 V to 500 V: identifier O Checked 2026-09-29.
ACEA, ACEM, ChargeUp Europe, CharIN and Eurelectric: Labelling for Electrically Rechargeable Road Vehicles and Charging Infrastructure: information for charge point operators (PDF) — Annex: Type 2 vehicle connector and vehicle inlet, 50 V to 500 V, DC: O Checked 2026-09-29.