In my previous post, I wrote about how to make your car charger smart with Tibber and Home Assistant. It turned out that the Sonoff charger wasn't durable enough.
I had been happy with my smartified car charger for several months when it suddenly stopped working. It turned out my Sonoff had broken down. I don't know if it was just bad luck or if the Sonoff is not constructed for 16A continuously. But my conclusion is that Sonoff TH16 shoud never ever be used for that kind of load. Just look at these pictures:
So instead I ordered the Aeotec Heavy Duty Smart Switch from Tibber Store. This switch is specified to handle up to 40A, which definitely is enough for more or less any car charger. If you use my invite code ab26409e, you get SEK 500 that you can use for buying the Aeotec switch.
As I didn't have a Z-Wave controller, I also bought a Z-Wave.me USB Z-wave controller. The installation of the Z-Wave stick on my Hass.io is really easy. All you have to do is to plug it in and it shows up in the UI.
In my previous post, you needed IFTTT to integrate Home Assistant with the switch. This is not necessary with Z-Wave switches so you can skip that part and integrate directly with the Aeotec switch.
This is what my automation configuration looks like with the Aeotec switch. Remember to replace "electricity_price_sensor_name" with your personal sensor name, see my previous post.
I had been happy with my smartified car charger for several months when it suddenly stopped working. It turned out my Sonoff had broken down. I don't know if it was just bad luck or if the Sonoff is not constructed for 16A continuously. But my conclusion is that Sonoff TH16 shoud never ever be used for that kind of load. Just look at these pictures:
So instead I ordered the Aeotec Heavy Duty Smart Switch from Tibber Store. This switch is specified to handle up to 40A, which definitely is enough for more or less any car charger. If you use my invite code ab26409e, you get SEK 500 that you can use for buying the Aeotec switch.
As I didn't have a Z-Wave controller, I also bought a Z-Wave.me USB Z-wave controller. The installation of the Z-Wave stick on my Hass.io is really easy. All you have to do is to plug it in and it shows up in the UI.
In my previous post, you needed IFTTT to integrate Home Assistant with the switch. This is not necessary with Z-Wave switches so you can skip that part and integrate directly with the Aeotec switch.
This is what my automation configuration looks like with the Aeotec switch. Remember to replace "electricity_price_sensor_name" with your personal sensor name, see my previous post.
- id: '1562442464535'
alias: Start charging when price is low
trigger:
- minutes: '1'
platform: time_pattern
condition:
- condition: template
value_template: '{{ float(states("sensor.electricity_price_sensor_name"))
<= float(state_attr("sensor.electricity_price_sensor_name", "avg_price"
)) }}'
action:
- device_id: 206910e789184f9ea88d19a9f99d212e
domain: switch
entity_id: switch.aeon_labs_zw078_heavy_duty_smart_switch_gen5_switch
type: turn_on
- id: '1562442464536'
alias: Stop charging when price is high
trigger:
- minutes: '1'
platform: time_pattern
condition:
- condition: template
value_template: '{{ float(states("sensor.electricity_price_sensor_name"))
> float(state_attr("sensor.electricity_price_sensor_name", "avg_price"))
}}'
action:
- device_id: 206910e789184f9ea88d19a9f99d212e
domain: switch
entity_id: switch.aeon_labs_zw078_heavy_duty_smart_switch_gen5_switch
type: turn_off

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