Changing Charging Amps - alandtse/tesla GitHub Wiki

Thanks this thread on the Home Assistant Forums.

You can now change the Charging Amps of your vehicle using the API:

service: tesla_custom.api
data:
  command: CHARGING_AMPS
  parameters:
    path_vars:
      vehicle_id: 'xxxxxxx'
    charging_amps: '5'

The vehicle_id is the id attribute of binary_sensor.<car name>_online_sensor (not to be confused with the vehicle_id attribute).