---
title: How Do I Shutdown the iMGs to Preserve Battery Life?
description: While the iMG’s are on charge, open the Prevent iOS app and allow the iMG’s to sync any outstanding head impacts or data logs.
---

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# How Do I Shutdown the iMGs to Preserve Battery Life?

## Prevent iMGs can be manually shutdown to preserve battery life. Follow these instructions to find out how.

1. While the iMG(s) are on charge, open the Prevent App and allow all remaining data to sync
2. After fully syncing, click on the 'Options' menu. Select the 'Shutdown All Monitors' button.
3. Once the shutdown process is initiated, the iMG(s) will display a blue LED light on the solo case to indicate they are shutdown. Please allow 20 to 30 seconds for each device to complete the shutdown. If any iMGs do not power down, you can attempt to send the shutdown command again or try closing and reopening the Prevent App.
4. Once shutdown, the iMG(s) can be removed from power. They will remain turned off and preserve their battery life.
5. To turn an iMG back on, it must be plugged back into power. The solo case LED will display a yellow or green light.
6. **Important:** Shutting down an iMG removes the date and timestamp from the device. To ensure accurate data collection, it is crucial to connect the iMG to the Prevent App again. For full guidance on pre-session sycning, please see [this article](https://support.preventbiometrics.com/en/pre-session-syncing-and-img-deployment?hsLang=en).

Tip: To manually shut down a specific iMG, select the athlete's tile you wish to manage. Then, tap the three dots located in the top right corner of the screen. From the menu that appears, choose the 'Shutdown Monitor' option.

Caution: During shutdown mode, the iMG device will not collect data. To ensure data is recorded, make sure to power the iMG back on before using it.

![App - Manual Shutdown GIF](https://support.preventbiometrics.com/hs-fs/hubfs/Updated%20Content/App%20-%20Manual%20Shutdown%20GIF.gif?width=366&height=651&name=App%20-%20Manual%20Shutdown%20GIF.gif)![](https://lh7-us.googleusercontent.com/DThINRzMGQAhOgEtpXNwqJbXVASeRimRZaL0uCDe8SdBQ6P3hScWaQqx1c8BbUFBzRAo0AFTuwVaRbim_FoQhxVt00mdV7E8Id4p4U2adTt23JReNWxxRxaoqP90cfPK4TMvotzuywOjLHhYNyoh1TY)

 

 

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