avigator/getBattery "getBattery\(\)")
calls will return a [ ` Promise ` ](/en-
US/docs/Web/JavaScript/Reference/Global_Objects/Promise) that rejects with a [
` DOMException ` ](/en-US/docs/Web/API/DOMException) of type ` NotAllowedError
` .

##  Syntax

http

    
    
    Permissions-Policy: battery=<allowlist>;
    

` <allowlist> `

    

A list of origins for which permission is granted to use the feature. See [ `
Permissions-Policy ` > Syntax ](/en-US/docs/Web/HTTP/Headers/Permissions-
Policy#syntax) for more details.

##  Default policy

The default allowlist for ` battery ` is ` self ` .

##  Specifications

Specification  
---  
[ Battery Status API  
#  permissions-policy-integration
](https://w3c.github.io/battery/#permissions-policy-integration)  
  
##  Browser compatibility

BCD tables only load in the browser  with JavaScript enabled. Enable
JavaScript to view data.

##  See also

  * [ ` Permissions-Policy ` ](/en-US/docs/Web/HTTP/Headers/Permissions-Policy) header 
  * [ Permissions Policy ](/en-US/docs/Web/HTTP/Permissions_Policy)
  * [ Battery Status API ](/en-US/docs/Web/API/Battery_Status_API)
  * [ ` Navigator.getBattery() ` ](/en-US/docs/Web/API/Navigator/getBattery "Navigator.getBattery\(\)")
  * [ ` BatteryManager ` ](/en-US/docs/Web/API/BatteryManager)

##  Help improve MDN

Was this page helpful to you?

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[ Learn how to contribute
](https://github.com/mdn/content/blob/main/CONTRIBUTING.md "This will take you
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This page was last modified on  Apr 10, 2023  by  [ MDN contributors ](/en-
US/docs/Web/HTTP/Headers/Permissions-Policy/battery/contributors.txt) .

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