Where the setting lives (it does not)
Nowhere you can reach. Ohme's installation guide says it as it is: the chargers "use a 4G data connection" and "are pre-configured in the factory to talk directly to the Ohme backend server". There is no web interface, no charger Wi-Fi, and the Ohme app has no OCPP server section. When a sales sheet says "OCPP 1.6J available for direct integration" it means agreements between the Ohme cloud and fleet or energy platforms, closed between companies; the owner is not involved.
What you can do today
- If what you want is smart tariff charging (Octopus Intelligent Go, etc.), Ohme does it better than almost anyone through its direct integration: you do not need OCPP for that.
- If you are a fleet or an energy provider and want data or control, the route is an agreement with Ohme (Ohme for Business), not a setting on the charger.
- If you need to manage it with your platform —tariffs, cards, several units, invoicing— it cannot be done today with an Ohme: there is no field, no alternative firmware, and the SIM belongs to Ohme.
- If the charger is for a business and you have not bought it yet, choose one with an editable OCPP URL and ask for it in writing. The brands below are checked one by one.
- If Ohme opens the field, this page changes the same day. It is dated in the header.
Where it usually fails
- The included 4G SIM is a convenience and a tie: the charger connects through Ohme even if you have Wi-Fi, and if Ohme switches off its server the charger loses its "smart".
- "OCPP 1.6J" on the datasheet of a charger with no URL field means cloud-to-cloud integration. The question to ask in writing is whether the owner can change the server URL.
- In "UK OCPP chargers" lists it appears next to zappi or Zaptec, which do have the field. They are not the same thing.
If your brand isn't here
The procedure is always the same; what changes is where the setting lives: look in the manufacturer's app, in the charger's web interface (by its IP) or in the installer software for a section called OCPP, Back office, Central System or Server. You need to be able to enter the URL and, nearly always, the identity. If the field is locked or missing, the manufacturer has tied the charger to its own platform: read what to do when the manufacturer locks or switches off its server.
Other brands
Related reading
- Your charger manufacturer shut down: how to get back in control
- Charge point management software: what it is, what it costs and how to choose
- askacharge.com technical documentation (OCPP, API)