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This guide walks you from sign-up to your first operational charging session on watt.ma. In under 15 minutes, you will create your account, connect an OCPP 1.6J compatible charging station, and verify everything is working correctly.
1

Create an account on watt.ma

Go to watt.ma and click Create an account. Enter your email address, a secure password, and your organization name. Verify your email address via the confirmation link sent to you.
2

Add your first station

In the Stations menu, click Add a station. Enter the station identifier (chargeBoxId), select the model from the list or choose Generic OCPP 1.6J. watt.ma automatically generates the OCPP connection URL and a security identifier for this station.
3

Configure the station for OCPP 1.6J

Log in to your station’s administration interface (Alfen, ABB, Ratio, Teison, and so on). In the network or OCPP settings, enter:
  • OCPP URL: the URL provided by watt.ma
  • ChargeBox ID: the identifier entered in the previous step
  • Protocol: OCPP 1.6J (JSON over WebSocket)
Save and restart the station if required.
4

Verify the connection

Return to watt.ma, in Stations > Overview. The status of your station should change to Connected (green indicator). Click on the station to view its state, connectors, and latest activity.
5

Launch a first session

From the dashboard or the station details page, click Start a session to test. You can also scan the QR code displayed on the station with a phone to initiate a CMI payment. Verify that the session appears in Sessions > Session tracking.
If the station does not change to Connected status after 2 minutes, check that the WebSocket port (usually 443 or 80) is not blocked by your firewall. See the Connect a station page for detailed troubleshooting.

Connect a station

Detailed OCPP configuration by manufacturer

Manage pricing

Define your charging prices