Adding todo for battery + sensor needed

[skank01]

Instead of getting a persistent notification, i'm trying to add it to my todo list for each battery below threshold.
I tried this, but get error:
[code=yaml]
sequence:
- service: todo.add_item
metadata: {}
data:
item: {{ trigger.event.data.device_name }} Batterij laag. Nodig {{
trigger.event.data.battery_quantity }}× {{
trigger.event.data.battery_type }}
target:
entity_id: todo.to_do
[/code]

Anyone succeeded in this?
I also want a sensor that counts the batteries that need a charge or change..
How can i do that?
Reason for this is, that i want a button in my dashboard, that only shows up, if the count is not 0 , so its present when i need to do actions.

Thx for the help here.

[andrew-codechimp]

Here's a complete automation example I've just knocked up

alias: Battery Low Todo
description: Battery Low Todo
trigger:
  - platform: event
    event_type: battery_notes_battery_threshold
    event_data:
      battery_low: true
    alias: Battery went low
condition: []
action:
  - action: todo.add_item
    metadata: {}
    data:
      item: |
        {{ trigger.event.data.device_name }} Battery Low
      description: >
        The device has a battery level of {{ trigger.event.data.battery_level
        }}% {{ '\n' -}} You need {{ trigger.event.data.battery_quantity }}× {{
        trigger.event.data.battery_type }}
    target:
      entity_id: todo.test
mode: queued

To test it you can use the Events tab in developer tools like this

[skank01]

Yes this works, wow great, now only the sensor :)

[andrew-codechimp]

The sensor is more tricky, I think the easiest way would be to have a sensor counting the number of items in your to-do list
{{ states('todo.test') | float(0) > 0 }}
Though I'm sure someone cleverer than me with jinja would be able to get a template that iterates and finds all the battery_low = true ones.

[skank01]

The sensor is more tricky, I think the easiest way would be to have a sensor counting the number of items in your to-do list {{ states('todo.test') | float(0) > 0 }} Though I'm sure someone cleverer than me with jinja would be able to get a template that iterates and finds all the battery_low = true ones.

mmm that wont do it, cause there are other non battery items in there too.

[andrew-codechimp]

Yes, that would require a dedicated list for battery warnings, I don't have an easy solution off hand for anything else.

[skank01]

i made a template sensor like this, will this work?
Tried using tools but to see if it works, but gives error
[code=yaml]
current_batteries_below_treshold:
friendly_name: Aantal batterijen laag
unit_of_measurement: 'devices'
state: >
{% set count = 0 %}
{% for entity_id in states.sensor if 'battery_plus' in entity_id.entity_id and '_low' not in entity_id.entity_id %}
{% if states(entity_id) | int < 20 %}
{% set count = count + 1 %}
{% endif %}
{% endfor %}
{{ count }}
[/code]