Firefox Battery Drain on Windows, Mac, Android or iOS

Published by Nyau Wai Hoe - Updated on

Firefox, the popular web browser known for its speed and security, has been widely used across various platforms, including Windows, Mac, Android, and iOS. While it offers a seamless browsing experience for many users, some have encountered a concerning problem—excessive battery drain. This issue can be frustrating for those who rely heavily on their devices for extended periods, and it has been reported on different operating systems. In this article, we will look into the potential causes behind Firefox battery drain and provide step-by-step troubleshooting solutions to mitigate the problem.

Also see: Brave vs. Chrome in CPU and Power Usage

Firefox Battery Drain on Windows, Mac, Android or iOS

Common causes of Firefox battery drain

Before we jump into the troubleshooting process, let’s explore some of the common reasons that could contribute to Firefox’s battery drain issue.

  1. Extensions and add-ons: One of the primary reasons for battery drain in Firefox can be attributed to misbehaving or poorly optimized extensions and add-ons. Some extensions may continue running background processes, even when the browser is not in use, consuming precious battery resources.
  2. Automatic background update service: Firefox includes an automatic background update service that periodically checks for and downloads updates in the background to ensure users have the latest version. While this feature is crucial for maintaining security and performance, it may consume battery resources, especially if updates are large or occur frequently.
  3. Hardware acceleration: While hardware acceleration can boost browser performance on some systems, it may cause battery drain on others. The graphics processing unit (GPU) can consume additional power when used for rendering web content.
  4. Heavy media and graphics: Constantly streaming or loading media-heavy content, such as high-resolution videos or graphics-intensive websites, can strain both the browser and the battery.
  5. Outdated browser version: Using an outdated version of Firefox may lead to performance and efficiency issues. The latest browser updates often include bug fixes and optimizations that can help improve battery life.

Linked issue: Twitch and YouTube Causing High CPU Usage on Firefox or Chrome

How to reduce battery usage of Firefox

Now that we have an understanding of the potential causes, let’s dive into the troubleshooting steps to address the Firefox battery drain issue on different platforms.

1. Disabling Firefox automatic background updates

By default, Firefox automatically checks for updates and installs them in the background to ensure you’re always on the latest version. While this is essential for security and performance reasons, it can consume battery resources, especially when you have multiple tabs open or the browser is running in the background. To disable automatic background updates, follow these steps:

  • Windows/Mac:
    1. Click on the three horizontal lines, and select “Settings”.Firefox settings
    2. Click on “General” in the left pane.
    3. Scroll down to the “Firefox Updates” section.
    4. Under the “Allow Firefox to” section, choose the “Check for updates, but let you choose to install them” option.
    5. Uncheck the “Use a background service to install updates” option.Disable automatic updates to fix Firefox battery drain issue
  • Android/iOS: In most instances, automatic updates on Android and iOS devices won’t cause battery drain issues. This is because app updating is handled at the system level, similar to how all other apps are updated automatically on your device. Such updates typically won’t have a noticeable impact on your device’s battery life.

Handy guideHow to Restart Firefox Browser Without Losing Tabs

2. Manage extensions and add-ons

Extensions and add-ons can significantly impact Firefox’s performance. Here’s how to manage them:

  • Windows/Mac: Click on the three horizontal lines > Click “Add-ons” > Click “Extensions” from the left pane. Disable or remove any unnecessary or suspicious extensions that might be causing battery drain.Disable Firefox add-ons and extensions to reduce power usage
  • Android/iOS: Tap on the three vertical dots at the top right corner > Tap “Add-ons”. Disable or uninstall extensions that may be causing heavy resource and power usage.Firefox Battery Drain Android iOS

3. Disable hardware acceleration

Hardware acceleration can be enabled or disabled in Firefox. To adjust this setting:

  • Windows/Mac: Click on the three horizontal lines > Click “Settings” > Click “General” on the left pane > Scroll down to the “Performance” section and uncheck “Use recommended performance settings.” Then, uncheck “Use hardware acceleration when available.”Disable Hardware Acceleration in Firefox browser
  • Android/iOS: Hardware acceleration on mobile devices is typically enabled by default and controlled at the system level, not on a per-app basis. In most cases, this isn’t the primary cause of your device’s battery drain issue since Firefox utilizes this feature in the same manner as other apps on your device.

Useful tip: How to Reopen Closed Window or Tab in Mozilla Firefox

4. Limit active tabs, especially heavy content websites

Browsing with multiple tabs open can consume more resources, especially if those tabs contain media-rich or graphic-intensive content. Each tab requires processing power, memory, and, subsequently, battery resources. Here’s how to manage and limit active tabs.

Firefox tabs cause quick battery drain

  • Monitor tab usage: Regularly check the number of tabs you have open and close those that are not essential. Over time, unused tabs can accumulate and drain resources.
  • Use tab management extensions: There are several extensions available for Firefox that can help manage your tabs more effectively. These extensions can suspend unused tabs, organize them into groups, or even set limits on the number of tabs you can open at once.
  • Be mindful of media-rich sites: Websites that stream videos, play audio, or have dynamic content can use up more resources. If you’re not actively viewing or listening, it’s a good practice to close or pause such sites.
  • Refrain from auto-refresh: Some sites automatically refresh to update content. This can be a significant drain if you have multiple tabs doing this in the background. Consider manually refreshing pages or using extensions that control the refresh rate.

Related resource: How to Bookmark All Tabs in Firefox, Chrome or Edge

5. Limit media autoplay

Preventing media from automatically playing can help conserve battery life. Here’s how to do it:

  • Windows/Mac: Enter “about:config” in the address bar > search for “media.autoplay.default” > set the value to “1” to block autoplay of audio and video.Limit media autoplay in Firefox
  • Android/iOS: The “about:config” page is not accessible in Firefox for Android and iOS versions. It’s only available on desktop versions of Firefox. However, you can still manually pause or stop media on web pages to help conserve battery life on your mobile device.

      6. Update Firefox to the latest version

      Keeping your browser up to date is essential for optimal performance and security. To update Firefox, follow these steps:

      • Windows/Mac: Click on the three horizontal lines at the top right corner to open the menu, then navigate to “Help” > Click “About Firefox”. Firefox will automatically check for updates, and if available, it will download and install the latest version.Update Firefox Browser
      • Android/iOS: Open the respective app store (Google Play Store or Apple App Store), search for Firefox, and tap “Update” if an update is available.Update Firefox App on Android or iOS

      Related concern: Firefox or Chrome keeps opening new tabs on its own, virus?

        Solutions from Reddit users regarding Firefox battery drain issue

        A recent discussion on Reddit raised concerns about excessive battery drain attributed to Firefox on desktops. Some users shared potential solutions and observations. One suggested approach was to examine about:performance and employ the Firefox Profiler. These tools can help identify resource-intensive processes or tasks within the browser.

        Firefox Battery Drain Reddit

        However, the majority seemed to concur on a significant contributor to the problem: the “Use a background service to install updates” feature. Disabling this service reportedly led to a decrease in battery usage for several users. Still, it’s worth noting that turning off this feature might require manual intervention for subsequent Firefox updates. As always, monitoring background processes and services is essential. Community feedback, like that from Reddit, is invaluable when troubleshooting software-related issues.


        Firefox stands out as one of the world’s premier web browsers, not just for its swift performance and security features but also for its versatility across different platforms. One of the distinguishing features that makes Firefox particularly appealing is its compatibility with extensions and add-ons, even on mobile devices like Android and iOS. This adaptability ensures that users can tailor their browsing experience to their exact preferences, regardless of the device they’re using.

        However, as with any feature-rich application, there can occasionally be hiccups. For Firefox, one recurrent concern among users, both on laptops and mobile devices, is the issue of battery drain. More often than not, this can be traced back to extensions and add-ons running silently in the background or to the automatic update services that Firefox diligently performs to keep your browser up-to-date and secure.

        By making a few strategic adjustments in settings, as outlined above, users can significantly reduce the battery consumption of Firefox, ensuring a smoother and more power-efficient browsing experience across all devices.

        Nyau Wai Hoe
        Nyau Wai Hoe is the Founder and Chief Editor of With a degree in software engineering and over 12 years of experience in the tech support industry, Nyau has established himself as an expert in the field, with a primary focus on the Microsoft Windows operating system. As a tech enthusiast, he loves exploring new technologies and leveraging them to solve real-life problems.

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