Chargers from Charge Amps and their claimed OCPP 1.6J support

[tuomaz]

Hi
Has anyone tried the claimed support of OCPP 1.6J of these chargers?

https://www.chargeamps.com/product/charge-amps-aura/
https://www.chargeamps.com/product/charge-amps-dawn/

[tuomaz]

I now have a Charge Amps Dawn installed. It connects and I see traffic between the charger and HA / OCCP. I will continue to test and see what works and not.

[tuomaz]

Example data, no charge ongoing (redacted som ID's?)
homeassistant | 2023-06-06 21:11:47.813 INFO (MainThread) [ocpp] XXX: receive message [2,"YYY","MeterValues",{"connectorId":1,"meterValue":[{"timestamp":"2023-06-06T19:11:47Z","sampledValue":[{"value":"75170","context":"Sample.Periodic","measurand":"Energy.Active.Import.Register","unit":"Wh"},{"value":"13.00","context":"Sample.Periodic","measurand":"Current.Offered","unit":"A"},{"value":"0.000","context":"Sample.Periodic","measurand":"Current.Import","phase":"L1","unit":"A"},{"value":"0.000","context":"Sample.Periodic","measurand":"Current.Import","phase":"L2","unit":"A"},{"value":"0.000","context":"Sample.Periodic","measurand":"Current.Import","phase":"L3","unit":"A"},{"value":"0.00","context":"Sample.Periodic","measurand":"Voltage","phase":"L1","unit":"V"},{"value":"0.00","context":"Sample.Periodic","measurand":"Voltage","phase":"L2","unit":"V"},{"value":"0.00","context":"Sample.Periodic","measurand":"Voltage","phase":"L3","unit":"V"}]}]}]

[Bryneholt]

Have you been able to start the charging with this integration?
im able to get some information, but unable to actually start the charging.

2023-08-20 15:48:39.039 INFO (MainThread) [ocpp] xxxx: send [2,"xxx-446d-4a7b-a340-a81420eef280","RemoteStartTransaction",{"idTag":"xxxx","connectorId":1}]
2023-08-20 15:48:39.056 INFO (MainThread) [ocpp] xxxx: receive message [3,"xxx-446d-4a7b-a340-a81420eef280",{"status":"Accepted"}]

but nothing does happen,
From the car point of view, the charger says "paused"

edit:

Because I had enabled RFID to charge, while using the Charge amps app, the charger still requires this.
Ie, I can only start it with the RFID tag.

[tuomaz]

I cannot stop the charging from Home Assistant. When I try to stop the charge with the "Charging control" switch, it immediately goes back to the on state. Does this work for you?

[Bryneholt]

Hello, I’ve used the workaround and created automations setting the current to 0 when to stop charging, and to 16A when to start the charging.

This works.

`alias: EV Smart Charging - Start
description: ""
trigger:

• platform: state
  entity_id:
  • sensor.smartcharger_charging
    from: "off"
    to: "on"
    condition: []
    action:
• service: number.set_value
  data:
  value: "16"
  target:
  entity_id: number.charger_maximum_current
  mode: single
  `

[Bryneholt]

And to stop

alias: EV Smart Charging - Stop
description: ""
trigger:

• platform: state
  entity_id:
  • sensor.smartcharger_charging
    from: "on"
    to: "off"
    condition: []
    action:
• service: number.set_value
  target:
  entity_id: number.charger_maximum_current
  data:
  value: "0"
  mode: single

[Miggle007]

I have the Charge Amps Aura. I am able to connect and to charge to connectorId 1 only. I am not able to use the full functionality using this OCPP instance and also, as mentioned above, not all sensors are processing the right information. I have asked Charge Amps for an API plugging into their cloud service as a workaround.

[pelleL21]

I have a Charge Amps Halo. How did you guys get the OCPP to work? I have put the adress ws://homeassistant.local:9000 in the Halo charger, but it doesen't connect to the OCPP server.

[HenrikBurton]

Thank you for sharing. Could i have improved over time? On what firmware version are your Halo?

[ClarreJu]

Hmm... Worth checking. I'll switch back to local and let I be for a while. I'll get back. I have removed the integration so I can't see the firmware. I'll get back with that too.

[ClarreJu]

Firmware: 184

[HenrikBurton]

Ok, that's the most resent version from feb 2025 according to the release note. Perhaps I should reconsider buying the Halo. Thanks!

[ClarreJu]

The reason I get Unavailable is because the Halo crashes every time. I have to restart it by flipping of the fuses. Not so good. I give up and go back to the cloud.

[Miggle007]

Just an extra thought:
I am using the ChargeAmps repo, also available via HACS: https://github.com/kirei/hass-chargeamps.

The advantage of using this is that the native cloud and app integeation still functions. Furthermore, I had some issues with my Chargeamps Aura and the connectorIDs (dual socket), which is not an issue with the Halo obviously.

This OCPP integration was too high maintenance for me.

[htukiain]

Is your Chargeamps upgraded to OCPP? I can remotely start charging from HA, but ending and restarting does not work from HA. All works fine from the ChargeAmpps app.

It seems that on/off and start / end charge might be different commands?

[kyrreaa]

I also have the ChargeAmps Halo, and they updated my firmware just a few days ago. (4.4-2025)
I can see a log message in Homeassistant saying "WARNING (MainThread) [py.warnings] /usr/local/lib/python3.13/site-packages/dataclasses_json/core.py:201: RuntimeWarning: 'NoneType' object value of non-optional type hardware_version detected when decoding ChargePoint" and I wonder if it is related to it not showing up?