What we run into most when connecting real chargers to askacharge.com, with the causes most likely first and how to tell which one is yours on the test server, free and with no account.
Your charger never shows as connected on the OCPP platform. The six causes we see on real chargers, most likely first, how to tell which one is yours and how to fix it.
The charger connects but stays Rejected or Pending after BootNotification. What each response means, why the server sends it and what to do.
The charger connects, works for a while and drops: every 1, 5 or 10 minutes. Why it happens (heartbeats, WebSocket ping, mobile networks, routers) and how to make it stable.
The car charged but the session shows no energy, 0 kWh, or no billing. The causes we've seen on real chargers and how to fix them.
You press “start” on the platform or in the app and the charger answers Rejected or does nothing. The usual causes and how to fix them.
You tap the card and the charger rejects it or does nothing. Why it happens (the number it reads isn't the one you registered, no network, local list, charger not accepted) and how to fix it.
You send a charging profile to limit power and the charger answers Rejected, or accepts it and keeps charging at full power. The causes we've seen (amps versus watts, zero profiles, wrong purpose) and how to fix them.
The charger accepts the command to update firmware or upload its diagnostics log, but never finishes. Why the download or upload fails and how to check it.
The car charged and the session is on the platform, but with no card or customer: nobody to bill. Why it happens (plugging in before tapping the card in OCPP 2.0.1, free mode, offline sessions) and how to avoid it.
Not sure where the URL goes on your charger? There are step-by-step guides by manufacturer: Wallbox, Alfen, Zaptec, Easee, KEBA, ABB, Schneider, Fronius, Huawei, GARO, SMA and more.
Try it in a minute on the OCPP test server: no account, you see live what it sends and what would fail on a real connection.
Test my chargerIf the platform that ran it shut down, stopped supporting it or the contract ended: 3 months free and basic setup on us. We help you remotely.
Ask for the rescue termsDashboard, tariffs, QR payments and API. 30 days free, no card, no commitment.
Create an accountWon't connect? Send us the model and what you see and we'll tell you by email what to change. Free. info@askacharge.com
Is it your home charger? We're preparing askacharge.com/casa: your charger in the cloud with your own API, for Home Assistant or whatever you use. The first one free. Waiting list