Good news if you own a Zappi: the whole setup happens in your myenergi account in a web browser. You don't touch the charger itself at all.
This guide follows myenergi's own instructions, Setting up Open Charge Point Protocol (OCPP), with the GuestCharge details filled in. Their short video below walks through the same screens. If anything here ever disagrees with myenergi's article, follow myenergi and let us know.
One thing to check before you start: OCPP is only available on Zappis with built-in Wi-Fi. myenergi's article says that means serial numbers starting with a 2, but the newer Zappi Go, whose serial numbers start with a 3, connects the same way. If your Zappi is an older unit that goes online through a myenergi hub, contact myenergi about your options first.
A myenergi account (register at myaccount.myenergi.com if you haven't), with the location setup completed. The OCPP settings only appear once a location exists.
A Zappi with built-in Wi-Fi (the Zappi Go included), already online in your myenergi account
A GuestCharge account. myenergi ask that you have an agreement with your OCPP provider before enabling OCPP. For GuestCharge, that just means an account with the charger added, which is Step 1.
About 10 minutes
1Add the charger in your GuestCharge dashboard
Log in to your GuestCharge dashboard and run the onboarding wizard with the Zappi's serial number. With that done, our server is expecting your charger.
On the left hand side, select Location, then myenergi products.
Can't see a Location button in the left hand side bar? myenergi say that's almost always because the location information hasn't been completed yet. Fill it in from the myaccount home screen first, then come back to this step.
4Open the Zappi's OCPP settings
Find the Zappi you want to connect and click OCPP settings.
Can't see an OCPP settings button for your Zappi? Check that its firmware is up to date. The option doesn't appear on older firmware, so get the update done and then come back to this step.
5Select Other and enter the GuestCharge details
You'll see a list of charge point management systems. Select Other to define your own, then fill in the fields exactly as below:
Backend URI:wss://ocpp.guestcharge.co/
ChargeboxID: leave as the default, which is your Zappi's serial number
Username: leave as the default too. myenergi's guidance is that this should match the ChargeboxID, and by default it already does.
Authorization Key: leave blank. myenergi say to leave this empty unless your provider gave you one, and we don't use one.
Two details about the Backend URI that myenergi specifically call out, and that catch people out:
It must end with a forward slash. Type wss://ocpp.guestcharge.co/ with the slash, not wss://ocpp.guestcharge.co without it.
Don't add the serial number to the end. Some of our other guides tell you to append the charger's serial number to the address. Not here: myenergi add the ChargeboxID to the address automatically, so typing it yourself would double it up.
A note on that wss bit: if your Zappi is in Great Britain and falls under the Smart Charging Regulations, myenergi advise using a secure WebSocket connection, which is what the extra s in wss gives you. It encrypts the data between myenergi and us, and myenergi recommend it for everyone regardless of location. Our address is always wss, so you're covered.
6Accept the terms and enable
Accept myenergi's terms and conditions and select Enable. That's genuinely it.
How you know it worked
The charger shows as connected in your GuestCharge dashboard.
If it won't connect
Check the Backend URI character by character. It must read exactly wss://ocpp.guestcharge.co/, including the forward slash at the end and with nothing after it.
Confirm the Zappi itself is online in your myenergi account. If myenergi can't see it, neither can we.
Check the ChargeboxID in the myenergi settings matches the serial number you entered in our onboarding wizard.
Check the Username still matches the ChargeboxID. If one was changed, change the other to match.
No OCPP settings button at all? That's a firmware issue rather than a connection one: update the Zappi's firmware and see Step 4.
Still stuck? Email the serial number to team@guestcharge.co and we'll check whether the Zappi has reached our server. myenergi's own article and video are linked at the top of this page if you want to compare screens.