Comments (6)
As it looks like we're able to issue the command, there's nothing we can do to make sure the vehicle actually respects or uses it. I'll close this out.
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Om my model Y, I can even go to 0 Amps with car's charger and the charging will stop without the charging switch to be off. This is good because I use an automation adjusting the charging current according to an external condition like solar panels production.
My understanding of this is: when the charger is plugged in into the car, the charger will communicate its capabilities to the car and car will send them to the server. Those capabilities will be taken by Tesla custom integration from the server.
You can see the charging limits as attributes in the number.{name}_charging_amps entity:
min: 0
max: 13
step: 1
mode: auto
unit_of_measurement: A
attribution: Data provided by Tesla
icon: mdi:ev-station
I think the 5A limitation comes only from the app.
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Weird that the api says 0 is minimum while the app says 5A. It is what it is, if I set it to 0 the car says charging takes 24+ and if I set it back to 5A it was having a hard time returning back to normal. No clue if this is bad for the car, donβt think so π€ might just take a long time to average out the number perhaps π€·
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2023 Model Y with 2023.12 software, I can set as low as 5A on the app, but down to 0A selected (1A actual draw verified by OpenEVSE's CT measurement) via HA Integration.
Side comment:
Teslas leave a lot of things powered on during charging. I do not have an exact measurement, but I have heard other people estimate about ~300W of power used for electronics, coolant pumps, etc during the entire charging process. I changed from throttled charging as slow as 6 amps to waiting until conditions were right to charge as fast as the circuit could handle, and saw a pretty noticeable improvement in miles/kWh delivered across a month's timeframe. Your mileage may vary, as they say, but low and slow charging might not be the most efficient strategy for you...
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Can you set lower than 5A through the Tesla mobile app?
Actually that doesn't really matter, if the API responds to requests below 5A than we can implement that in this integration. This can be tested through the custom_api call.
Something like this:
service: tesla_custom.api
data:
command: CHARGING_AMPS
parameters:
path_vars:
charging_amps: >-
{{ state_attr('binary_sensor.<vehicle_name>_online_sensor', 'id') }}
charging_amps: 2
wake_if_asleep: true
from tesla.
2023 Model Y with 2023.12 software, I can set as low as 5A on the app, but down to 0A selected (1A actual draw verified by OpenEVSE's CT measurement) via HA Integration.
Side comment:
Teslas leave a lot of things powered on during charging. I do not have an exact measurement, but I have heard other people estimate about ~300W of power used for electronics, coolant pumps, etc during the entire charging process. I changed from throttled charging as slow as 6 amps to waiting until conditions were right to charge as fast as the circuit could handle, and saw a pretty noticeable improvement in miles/kWh delivered across a month's timeframe. Your mileage may vary, as they say, but low and slow charging might not be the most efficient strategy for you...
Indeed, charging to max current would be the optimum choice. In my case, I prefer to give the energy company as less as possible. Here is a table with values of charging rates I took during a morning, 1A probably just covers for the car's consumption:
0A - 0Km/h - zero current draw measured
1A - 0 Km/h
2A - 1.9 Km/h
3A - 3.5 Km/h
4A - 4.5 Km/h
5A - 6.4 Km/h
6A - 7.7 Km/h
7A - 9.2 Km/h
8A - 10.5 Km/h
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