Here are some tips to help lengthen your battery life:

• Turn on Battery Saver mode
• Close apps that you aren't using (especially Minecraft, Adobe products, or if you have lots of tabs open in a browser)
• Turn your brightness down

For more options, you can check out this Microsoft page.

 

 

If this continues being a problem, bring your computer to the TSC. There may be an issue with your battery.