Hi Chloe_762,
Thank you for reaching Microsoft Community and apologies for the inconvenience this has caused you. We understand how frustrating it is not to be able to get the worth of our hard-earned money when our device does not live up to its expectations.
Yes, the Surface Laptop 5 (13.5") is advertised to have up to 18 hours of battery life based on typical Surface device usage. Testing conducted by Microsoft in August 2022 using preproduction software and preproduction 13.5” Intel® Core™ i5, 256GB, 8GB RAM device. Testing consisted of full battery discharge with a mixture of active use and modern standby. The active use portion consists of (1) a web browsing test accessing eight popular websites over multiple open tabs, (2) a productivity test utilizing Microsoft Word, PowerPoint, Excel, OneNote and Outlook, and (3) a portion of time with the device in use with idle applications. All settings were default except screen brightness was set to 150 nits with Auto-Brightness disabled. Wi-Fi was connected to a network. Tested with Windows Version 11.0.22621 (21H2). Battery life varies significantly with settings, usage and other factors. (Surface Laptop 5: Fast, lightweight laptop with touchscreen | Microsoft Surface)
Kindly try going to Windows Settings > System > Power & Battery. Select View detailed info. Under Battery usage per app, check to see which app are affecting the battery life of the device. There are several sort options including "background" to help identify. Validate if there are any installed applications that may be using a lot of power.
In regard to options is getting your Surface serviced, yes, I understand that your device is still in warranty, and you should not be paying the fee in getting service. Please reach out to our support instead for further assistance on this as we do not have the necessary tools here to assist you when it comes to submitting the device for service. You may reach our live support through these steps:
- Go to Contact Us - Microsoft Support
- Choose how you would like to get support for your Surface device.
- Type in the problem you need help with.
- Look at any available solutions offered and select Contact Support.
Kind regards,
Marrion