#Batttery Health Card

1 messages · Page 1 of 1 (latest)

jovial solar
#

I created a card to show me batteries in my Z-Wave and BTHome devices that are running low. I couldn't find any relevant examples that did exactly what I want so I used Gemini to help me with the solution. The card looks OK but I really don't like how it's done so I'm open to advice for making it better. I created a template sensor called Low Battery Report defined as follows:

# templates.yaml
- sensor:
    - name: "Low Battery Report"
      unique_id: low_battery_report_markdown
      state: >
        {% set mobile_app_entities = integration_entities('mobile_app') %}
        {% set filtered_sensors = states.sensor
        | map(attribute='entity_id')
        | select('search', '_battery$|_battery_level$')
        | reject('in', mobile_app_entities)
        | list
        %}
        {% set low_battery_lines = namespace(lines=[]) %}
        
        {% for sensor_entity_id in filtered_sensors %}
          {% set device_id_val = device_id(sensor_entity_id) %}
          {% set device_name = device_attr(device_id_val, 'name_by_user')
            or device_attr(device_id_val, 'name') or 'Unknown Device' %}
          {% set battery_percentage = states(sensor_entity_id) |
            float(default=0) | round(0, 'half') | int(default=0) %}
          
          {% if battery_percentage <= 10 %}
            {% set color_var = 'var(--warning-color)' %}
            {% if battery_percentage <= 5 %}
              {% set color_var = 'var(--error-color)' %}
            {% endif %}
            
            {% set low_battery_lines.lines = low_battery_lines.lines + [
              '<div style="margin-top: 4px;">' ~ 
              '<span style="color: ' ~ color_var ~ '; font-weight: bold;">' ~ device_name ~ '</span>' ~ 
              ' (' ~ battery_percentage ~ '%)' ~
              '</div>'
            ] %}
          {% endif %}
        {% endfor %}
        
        {% if low_battery_lines.lines | length > 0 %}
          {{ low_battery_lines.lines | join('\n') }}
        {% else %}
          All batteries are OK. :green_circle:
        {% endif %}

The goal of this sensor is to ignore all the batteries in the Mobile App integration because my phone running the HA companion app isn't a concern. I want to pick up all the _battery_level entities from Z-Wave and all the _battery entities from BTHome. Then I get all the device names to which these entities belong because those are more meaningful than the entity names in the report. When the battery percentage is 10 or below, I attach HTML for the warning color and when 5 or below, I use the error color. If there are any sensors with low percentages in the list, I concatenate them into the result, including the device name and battery percentage. If there are no low batteries, I just return All batteries are OK :green_circle:. The markdown card that uses this sensor looks like this:

type: markdown
title: Low Battery Report 🔋
content: >
  {% set report_content = states('sensor.low_battery_report') %}
  {% if report_content == 'All batteries are OK. 🟢' %}
    <div style="text-align: center; padding: 10px;">
      <ha-icon icon="mdi:check-circle" style="color: var(--success-color);"></ha-icon> 
      {{ report_content }}
    </div>
  {% else %}
    <p style="margin-bottom: 8px;">The following devices are at 10% or less:</p>
    {{ report_content }}
  {% endif %}

This works okay but I think it's messy. It just feels wrong generating HTML from a sensor and then injecting that into a markdown card. The sentinel value check {% if report_content == 'All batteries are OK. :green_circle:' %} feels particularly wrong to me. Is there a better way?

sick wraith
#

Hello, how can I know if the zikibi is working from the devices

rugged sapphire
# jovial solar I created a card to show me batteries in my Z-Wave and BTHome devices that are r...

You might consider the auto entities card. You can apply the same concepts that you used in the template and set the criteria for the entities you want to display. You can define the severity, include/exclude integrations, naming convention, etc. It is capable of sorting which is useful. You can even configure it to show something different when no entities match the criteria such as your "All batteries are OK." message. It's a tricky card to work with sometimes but it works great.
I posted an example in the card_mod thread in the forum. https://community.home-assistant.io/t/auto-entities-automatically-fill-cards-with-entities/147801/1826?u=d_sellers1 It shows how I progressively worked through configuring the card to get it to show what I want. Bear in mind that this example uses some hard-coded entities but that's how I wanted stuff shown; with templating, you can include/expand groups or whatever.. I "feed" the entities into an Entities card. (I have another example somewhere that shows each entity as its own card. That example shows Lights that are on and as they're turned off they "disappear.")

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jovial solar
rugged sapphire