Home Assistant Automation Blueprint that turns off your phone's charger when the phone reaches a certain battery level. Prevents 'overcharging'

stop-charging-at-battery-level.yaml

blueprint:
  name: "Turn off charger at battery level"
  description: "Turn off a switch when a mobile device's battery reaches a certain level"
  domain: automation
  input:
    battery_level_sensor:
      name: Battery Level Sensor
      description: "Select the sensor that reports the battery level"
      selector:
        entity:
          domain: sensor
          device_class: battery
    battery_state_sensor:
      name: Battery State Sensor
      description: "Select the sensor that reports the battery charging state"
      selector:
        entity:
          domain: sensor
          device_class: enum
    charger_switch:
      name: Charger Switch
      description: "Select the switch controlling the charger"
      selector:
        entity:
          domain: switch
    desired_battery_level:
      name: Desired Battery Level
      description: "Set the battery level at which to turn off the charger"
      default: 80
      selector:
        number:
          min: 1
          max: 100
          unit_of_measurement: "%"
    charging_state_value:
      name: Charging State Value
      description: "The value that indicates the battery is charging (e.g., 'charging')"
      default: "charging"
      selector:
        text:

trigger:
  - platform: state
    entity_id: !input battery_level_sensor
  - platform: state
    entity_id: !input battery_state_sensor

condition:
  - condition: numeric_state
    entity_id: !input battery_level_sensor
    above: !input desired_battery_level
  - condition: state
    entity_id: !input battery_state_sensor
    state: !input charging_state_value

action:
  - service: switch.turn_off
    target:
      entity_id: !input charger_switch