Battery is not low

The Battery is not low condition passes when a battery-powered device is not reporting a low battery. Many devices, like door sensors, smoke detectors, and remote controls, expose a dedicated low-battery indicator that flips on once the charge drops past the manufacturer’s threshold. Use Battery is not low to confirm a device still has enough power before running an automation, for example to only start a scheduled test when every sensor is in good shape.

Using this condition from the user interface

If you prefer building automations visually, Home Assistant walks you through this condition step by step. You pick what to check, tweak a few options, and save. No YAML knowledge required.

To use Battery is not low in an automation:

1. Go to Settings > Automations & scenes.
2. Open an existing automation, or select Create automation > Create new automation.
3. In the And if section, select Add condition.
4. Select what you want to check. Under By target (see Targets), pick the area your battery-powered device is in (like your hallway or garden). You can also select a device, a specific entity, or a label.
5. From the conditions shown for that target, select Battery is not low.
6. Under Condition passes if (see Behavior), pick Any or All to control how the check behaves when multiple devices are targeted.
7. Under For at least, set how long the device must have been reporting a normal battery before the condition passes. Leave it at zero to pass immediately.
8. Select Save.

Options in the UI

Using this condition in YAML

If you work directly in YAML, or you want to know exactly what Home Assistant does under the hood, this section has the technical reference. It lists the field names you use in YAML, their types, and which ones are required.

In YAML, Battery is not low is referred to as battery.is_not_low. A basic example looks like this:

condition: battery.is_not_low
target:
  entity_id: binary_sensor.front_door_sensor_battery_low

This passes when the front door sensor is not reporting a low battery.

Options in YAML

Targets of the condition

This condition requires a target. The target is the object that Home Assistant will check. You can point the condition at a single entityAn entity represents a sensor, actor, or function in Home Assistant. Entities are used to monitor physical properties or to control other entities. An entity is usually part of a device or a service. [Learn more], a device, an area, a floor, or a label, and Home Assistant will evaluate every matching battery entity behind that target.

• Entity: one specific battery entity, such as battery.living_room.
• Device: every battery entity that belongs to a device.
• Area: every battery entity in a room or area.
• Floor: every battery entity on a floor.
• Label: every battery entity that shares a label.

You can also select different target types in one condition. For example, you can add a specific entity and an area as targets in the same condition to check both of them at once.

Behavior with multiple targets

When you target more than one entity (or select an area, floor, or label that contains several), the Condition passes if option controls how the results combine:

• Any (default): the condition passes if at least one of the targeted entities matches. For example, if you check three smoke sensors and only one of them detects smoke, the condition still passes. This is useful for questions like “is there smoke anywhere in the house?”
• All: the condition passes only when every targeted entity matches. For example, if you check the same three smoke sensors, the condition passes only once all three report cleared. This is useful for “is the entire house safe now?” checks, so your automation does not send an all-clear while one room still has a reading.

Good to know

• The condition works with binary sensors that have the battery device class. These are typically separate entities from the battery percentage sensor and only report on (low) or off (normal).
• Not every battery-powered device exposes a low-battery indicator. If yours doesn’t, use Battery level with a percentage threshold instead.
• Devices that are unavailable (unavailable) or have an unknown state (unknown) are skipped for Any and fail for All.
• To check the opposite state, use Battery is low.
• For an overview of the status of your battery entitiesAn entity represents a sensor, actor, or function in Home Assistant. Entities are used to monitor physical properties or to control other entities. An entity is usually part of a device or a service. [Learn more], open the Maintenance dashboard. This dashboard allows you to quickly see which batteries need replacing.

Try it yourself

Ready to test this? Go to Settings > Automations & scenes, open an automation, and add this condition. Trigger the automation with and without the condition met, and watch whether it continues or stops.

More examples

Real scenarios where this condition gates an automation. Copy any example and adapt it to your setup.

Automation: only run a smoke detector test when every battery is healthy

This automation runs a monthly smoke detector test, but only when all detectors report a normal battery. If any is low, the test is skipped so you can replace the battery first.

• Trigger: Time: First day of the month at 10:00
• Condition: Battery is not low
  • Target: Smoke detector batteries
  • Condition passes if: All
• Action: Run smoke detector test script

alias: "Monthly smoke detector test when batteries are healthy"
triggers:
  - trigger: time
    at: "10:00:00"
conditions:
  - condition: template
    value_template: "{{ now().day == 1 }}"
  - condition: battery.is_not_low
    target:
      label_id: smoke_detectors
    options:
      behavior: all
actions:
  - action: script.test_smoke_detectors

Still stuck?

The Home Assistant community is quick to help: join Discord for real-time chat, post on the community forum with the condition you’re using and what you expected to happen, or share on our subreddit /r/homeassistant.

Related conditions

These conditions work well alongside this one:

• Battery is low: Tests if one or more batteries are reporting a low charge.

• Battery level: Tests if a battery level is above a threshold, below a threshold, or in a range of values.

• Battery is charging: Tests if one or more battery-powered devices are charging.