Vehicle Charging Reminder – Home Assistant Blueprint
Keep your EV or hybrid topped up without worrying about forgetting to plug it in! 
This Home Assistant blueprint sends a friendly mobile app notification if your vehicle is at home 
, the battery drops below your chosen threshold, and it isn’t plugged in. You can snooze the reminder 
or ignore it completely 
— all from your phone!
Features 
Trigger reminders only when your vehicle is home- Works with any battery sensor
- Stop reminders automatically if the car is plugged in
- Mobile app notification includes current battery %
- Actionable buttons:
- Remind me later - Snooze reminder for a set amount of minutes
- Ignore - dismiss notifications
- Configurable battery threshold, snooze time, and reminder time
- Perfect for Home Assistant Companion App on iOS & Android
Installation 
or manually:
GitHub Repo- Download the blueprint YAML file from this repo
- Place it in your Home Assistant folder:
- Go to Settings → Automations & Scenes → Blueprints → Import Blueprint in Home Assistant
- Select the blueprint and create your automation using your sensors and mobile device
Inputs 
- Car Battery Sensor: Your vehicle’s battery percentage sensor
- Vehicle Tracker: Track when your car is at home
- Home Zone: The zone where the reminder should trigger
- Charger Status Sensor: Detect if the car is plugged in
- Charger Connected State: The value that indicates “plugged in”
- Battery Threshold: Battery % at which to notify you
- Reminder Time: Daily time for the notification
- Notify Device: Mobile app device that receives the reminder
- Reminder Text: Optional custom message
- Snooze Minutes: Time to wait before reminding again if snoozed
How it Works
- At the configured reminder time, the blueprint checks:
- Is the vehicle home?
- Is the battery below the threshold?
- Is the car not plugged in?
- If all conditions are met, a notification is sent to your mobile device.
- Notification includes buttons:
- Remind me later → notification comes back after the snooze period
- Ignore → stops further notifications for the day
Example Default Message 
Vehicle battery is below 80% (currently at 65%). Please plug the vehicle in.
Notes 
- Make sure you have the Home Assistant Companion App installed and notifications allowed.
- Actionable buttons may require a restart of the app after importing the blueprint.
- Works with any EV, hybrid, or car battery sensor compatible with Home Assistant.
Contribute / Feedback 
Found a bug? Want to suggest features? Open an issue or submit a pull request.
Keep your EV happy and avoid low-battery panic!
blueprint:
name: 🚗 Vehicle Charging Reminder
description: >
Sends a mobile app notification to remind you to plug in your vehicle if:
- The vehicle is at home (within the selected zone)
- The battery is below a set threshold
- The vehicle is not plugged in
The notification includes actionable buttons:
- "Remind me later" (resends after a configurable snooze)
- "Ignore" (stops further notifications)
Default message includes the current battery percentage.
domain: automation
source_url: https://github.com/stumiles86/VehicleChargingReminder
input:
battery_sensor:
name: Car Battery Sensor
description: Sensor entity that reports the vehicle's battery percentage.
selector:
entity:
domain: sensor
device_class: battery
vehicle_tracker:
name: Vehicle Location Tracker
description: Tracker entity that reports the vehicle's location.
selector:
entity:
domain: device_tracker
home_zone:
name: Zone Required For Reminder
description: The vehicle must be in this zone for notifications to trigger.
default: zone.home
selector:
entity:
domain: zone
charger_sensor:
name: Charger Status Sensor
description: Sensor indicating if the vehicle is plugged in.
selector:
entity: {}
charger_connected_state:
name: Charger Connected State
description: State value representing the vehicle being plugged in.
default: "on"
selector:
text:
battery_threshold:
name: Battery Percentage Set Point
description: Notify if battery is below this level.
default: 80
selector:
number:
min: 1
max: 100
unit_of_measurement: "%"
mode: slider
reminder_time:
name: Reminder Time
description: Time of day to check and send the reminder.
selector:
time: {}
notify_device:
name: Device to notify
description: Device must have the Home Assistant Companion App to receive actionable notifications.
selector:
device:
integration: mobile_app
reminder_text:
name: Reminder Text
description: >
Custom reminder message.
Leave blank to use the default:
"Vehicle battery is below <set point>% (currently at <current battery>%). Please plug the vehicle in."
default: ""
selector:
text:
snooze_minutes:
name: Snooze Time
description: Minutes before sending another reminder after "Remind me later" is pressed.
default: 30
selector:
number:
min: 1
max: 240
unit_of_measurement: minutes
mode: slider
mode: restart
trigger:
- platform: time
at: !input reminder_time
variables:
battery_sensor: !input battery_sensor
tracker: !input vehicle_tracker
zone_required: !input home_zone
charger: !input charger_sensor
charger_state: !input charger_connected_state
threshold: !input battery_threshold
custom_message: !input reminder_text
device: !input notify_device
condition:
- condition: template
value_template: "{{ states(battery_sensor) | float(0) < threshold }}"
- condition: template
value_template: "{{ is_state(tracker, zone_required.split('.')[-1]) }}"
- condition: template
value_template: "{{ states(charger) != charger_state }}"
action:
- alias: "Send initial actionable notification"
domain: mobile_app
type: notify
device_id: !input notify_device
title: "Vehicle Charging Reminder"
message: >
{% set current_batt = states(battery_sensor) | float(0) %}
{% if custom_message | length > 0 %}
{{ custom_message }}
{% else %}
Vehicle battery is below {{ threshold }}% (currently at {{ current_batt }}%). Please plug the vehicle in.
{% endif %}
data:
tag: vehicle_charging_reminder
actions:
- action: REMIND_LATER
title: "Remind me later"
- action: IGNORE
title: "Ignore"
destructive: true
- repeat:
while:
- condition: template
value_template: "{{ states(battery_sensor) | float(0) < threshold }}"
- condition: template
value_template: "{{ is_state(tracker, zone_required.split('.')[-1]) }}"
- condition: template
value_template: "{{ states(charger) != charger_state }}"
sequence:
- wait_for_trigger:
- platform: event
event_type: mobile_app_notification_action
event_data:
action: REMIND_LATER
- platform: event
event_type: mobile_app_notification_action
event_data:
action: IGNORE
- platform: state
entity_id: !input charger_sensor
- choose:
- conditions:
- condition: template
value_template: "{{ wait.trigger.event.data.action == 'REMIND_LATER' }}"
sequence:
- delay:
minutes: !input snooze_minutes
- alias: "Send snoozed actionable notification"
domain: mobile_app
type: notify
device_id: !input notify_device
title: "Vehicle Charging Reminder"
message: >
{% set current_batt = states(battery_sensor) | float(0) %}
{% if custom_message | length > 0 %}
{{ custom_message }}
{% else %}
Vehicle battery is below {{ threshold }}% (currently at {{ current_batt }}%). Please plug the vehicle in.
{% endif %}
data:
tag: vehicle_charging_reminder
actions:
- action: REMIND_LATER
title: "Remind me later"
- action: IGNORE
title: "Ignore"
- conditions:
- condition: template
value_template: "{{ wait.trigger.event.data.action == 'IGNORE' }}"
sequence:
- stop: "User ignored reminder"
- conditions:
- condition: template
value_template: "{{ is_state(charger, charger_state) }}"
sequence:
- stop: "Vehicle plugged in"