Battery State

I’m struggling with trying to get the battery level % to show with this icon, and furthermore change colors based on different operators >= 90, <=70, etc. any help with syntax in advance is much appreciated!

type: custom:button-card
entity: sensor.MyBattery_phone_battery_level
name:  Battery 
show-state: true
show-units: true
styles:
  card: 
    - filter: opacity(50%)
    - height: 60px
    - width: 115px
  icon:
    - color: black
  state: 
    - value: 70
    - operator: ">="
  styles:
    card:
      - filter: opacity(100%)
    icon: 
      - color: red
    state:
      - value: 70
      - operator: "<="

here’s my result:
image

Clearly this is not a button-card but have a look here too
GitHub - maxwroc/battery-state-card: Battery state card for Home Assistant