My aim was to:

• That the tile updates itself (e.g. when adding new sensors)
• Ignore sensors that are not on battery or remain blocked at 100%
• To have a rather understandable sensor name
• Have colors so that weak or dead batteries are easily identified
• Classify batteries in order of "fatigue"

tile code

Type: custom:auto-entities
card:
 Type: entities
 title: Control of batteries
 state_color:
  green: '#00FF00'
  yellow: '#FFFF00'
  red: '#FF0000'
filter:
 include:
  - entity_id: _battery
    state: <100
Output:
 Method: state

In the event of an error ‘Custom element doesn’t exist: auto-entities", think about installing auto-entities in HACS