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Buyer guide · 8 min read

How to specify an EV charging connector for an OEM program

A practical checklist covering interface, electrical rating, environment, cable, evidence and supply.

Six decisions that define a useful connector specification

1. Lock the vehicle interface and market

Name the interface and target country first. Similar-looking connectors can sit inside different regulatory, documentation and vehicle expectations.

2. Describe the electrical envelope

Provide normal and maximum current, voltage, phase, power and expected charging duration. A headline power value alone is not enough.

3. Define the operating environment

Include ambient range, indoor or outdoor exposure, expected mating frequency, cable handling and any chemical or abrasion risks.

4. Specify the cable and termination

State length, conductor size basis, jacket preference, bend and weight constraints, plus charger-side termination.

5. Agree the evidence plan

List the drawings, inspection records, test reports and certification evidence needed for the exact configuration.

6. Connect scope to forecast

Annual volume, launch timing and replenishment profile affect tooling, MOQ, capacity and lead-time planning.