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* Spelling fixes * "It's" -> "its" fixes * Fix capitalization of "Pi" in "Raspberry Pi" "Pi", not "PI" or "pi".
61 lines
2.4 KiB
Markdown
61 lines
2.4 KiB
Markdown
---
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layout: page
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title: "Track your battery level"
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description: "Basic example how to track the battery level of your mobile devices."
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date: 2016-01-29 09:00
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sidebar: true
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comments: false
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sharing: true
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footer: true
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ha_category: Automation Examples
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---
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### {% linkable_title iOS Devices %}
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If you have a device running iOS (iPhone, iPad, etc), The [iCloud](/components/device_tracker.icloud/) is gathering various details about your device including the battery level. To display it in the Frontend use a [template sensor](/components/sensor.template/). You can also use the icon template option to create a dynamic icon that changes with the battery level.
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{% raw %}
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```yaml
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sensor:
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- platform: template
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sensors:
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battery_iphone:
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friendly_name: iPhone Battery
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# "entity_id:" ensures that this sensor will only update when your device tracker does.
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entity_id: device_tracker.iphone
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unit_of_measurement: '%'
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value_template: >-
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{%- if states.device_tracker.iphone.attributes.battery %}
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{{ states.device_tracker.iphone.attributes.battery|round }}
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{% else %}
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{{ states.sensor.battery_iphone.state }}
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{%- endif %}
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icon_template: >
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{% set battery_level = states.sensor.battery_iphone.state|default(0)|int %}
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{% set battery_round = (battery_level / 10) |int * 10 %}
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{% if battery_round >= 100 %}
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mdi:battery
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{% elif battery_round > 0 %}
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mdi:battery-{{ battery_round }}
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{% else %}
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mdi:battery-alert
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{% endif %}
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```
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{% endraw %}
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The `else` part is used to have the sensor keep its last state if the newest [iCloud](/components/device_tracker.icloud/) update doesn't have any battery state in it (which happens sometimes). Otherwise the sensor will be blank.
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### {% linkable_title Android and iOS Devices %}
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While running the [Owntracks](/components/device_tracker.owntracks/) device tracker you can retrieve the battery level with a MQTT sensor. Replace username with your MQTT username (for the embedded MQTT it's simply homeassistant), and deviceid with the set Device ID in Owntracks.
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{% raw %}
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```yaml
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sensor:
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- platform: mqtt
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state_topic: "owntracks/username/deviceid"
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name: "Battery Tablet"
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unit_of_measurement: "%"
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value_template: '{{ value_json.batt }}'
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```
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{% endraw %}
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