Time templating help

Configuration
1

Hi guys,
I’m trying to make two sensors that shows

1, if my car is charging. When it will be completed based on the last time it was update plus the state (H:M to full charge)

2, if my car isn’t currently charging. I would like to see how long it would take based on the current time plus the state (H:M to full charge)

I have the following

{{ (as_timestamp(states.sensor.car_battery_last_received.last_changed)) | timestamp_custom("%H:%M") }}

this shows when the sensor was last updated

{{ (utcnow().strftime("%s") | int) |
timestamp_custom("%H:%M")}}

this is showing me the time as of now

{{(states('sensor.car_charge_time_full'))}}

this is showing me how long it will take to charge to full: 1:30:00.000000

yet for the life of me I can’t create two sensors
now + state
last_changed + state

could someone please help

3

last_changed + state

{{ (states.sensor.car_battery_last_received.last_changed 
    + as_timedelta(states('sensor.car_charge_time_full'))).strftime("%H:%M") }}

now + state

{{ (now() + as_timedelta(states('sensor.car_charge_time_full'))).strftime("%H:%M") }}
1 Like
4

Thank you
Really appreciate it

5

Happy to help. I answered your question as asked, but if you’d like another hint - you can format your template sensor for charging complete time as a timestamp and then take advantage of the built in timestamp formatting options to control the display in the front end. I made up the entity binary_sensor.car_charging in this example, I assume you have an actual sensor for this based on your question.

template:
  - sensor:
      - name: "Car Charging Completed"
        unique_id: car_charging_complete
        device_class: timestamp
        state: >
          {% if is_state('binary_sensor.car_charging','on') %}
            {{ states.sensor.car_battery_last_received.last_changed 
                + as_timedelta(states('sensor.car_charge_time_full')) }}
          {% else %}
            {{ now() + as_timedelta(states('sensor.car_charge_time_full')) }}
          {% endif %}

Then in your front end:

- entity: sensor.car_charging_complete
  format: time

image

- entity: sensor.car_charging_complete
  format: time

image

- entity: sensor.car_charging_complete
  format: total

image

- entity: sensor.car_charging_complete
  format: relative

image

1 Like
6

Thank you
This is really helpful

One issue I am having is the last_changed is 1hour out (currently summer time hrs in the UK)
How do I get around this, aside from waiting a few week :slight_smile:

7

It shouldn’t be off if your time zone is set correctly.

Maybe you have the same issue as this person?

8

Your right I am
Now() is correct
Utcnow() is wrong
Strange as I’m running home assistant os