G Series Laptop Battery Drain and Performance Drops after BIOS Update

Summary: The following article provides information about Battery and Performance problems on the G Series Gaming Laptop after updating the BIOS. The battery drains quicker, and the laptop runs slower after updating the BIOS. (Version 1.29.0 or 1.30.0) ...

This article applies to This article does not apply to This article is not tied to any specific product. Not all product versions are identified in this article.
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Symptoms

Battery drain and performance issues after updating the BIOS

You may experience one of the following issues after updating the BIOS on your G Series gaming laptop:

Two issues may occur after updating the BIOS (Version 1.29.0 or 1.30.0):

  • The laptops performance is worse.
  • The speed of the laptop battery drain while sitting idle doubles and reduces the time that the battery is in use.

It affects the following G-Series Laptops:

  • G16 7620 Gaming Laptop
  • G15 5521 Gaming Laptop
  • G15 5520 Gaming Laptop

Cause

There is a code change in those BIOS versions which impacts performance and increases the battery drain.

Resolution

Note: You must have administrator rights on your laptop to make any operating system changes or update any software.

Update the BIOS to Dell G15 5520/5521 and G16 7620 System BIOS, version 1.31.0 or later. Use the instructions in the following link to download and install the Dell_G15_5520_5521_G16_7620_1.31.0.exe update on your laptop:

Contact us if you have any further questions or concerns:


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Affected Products

Dell G15 5520, Dell G15 5521 Special Edition, Dell G16 7620
Article Properties
Article Number: 000279345
Article Type: Solution
Last Modified: 13 Nov 2025
Version:  7
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