How to mass rename friendly name in Frontend (auto-entity card)?

[Ildar_Gabdullin]

try this (untested):

    filter:
      template: >-
        {% for state in states.sensor -%}
          {%- if state.entity_id | regex_match("sensor.battery_", ignorecase=False) -%}
            {{
              {
                'entity': state.entity_id,
                'name': state.attributes.friendly_name.split(' battery')[0]
              }
            }},
          {%- endif -%}
        {%- endfor %}