Hi Lara!
Thanks for reaching Microsoft Community. We're here to help and let's work on this together.
With your query on replacing the battery, yes, the battery in the Surface Book 3 can be replaced. However, it is recommended that you take your device to an authorized Microsoft service center to have the battery replaced. Attempting to replace the battery yourself may cause damage to your device and void your warranty. You can also contact our live Microsoft support team for more information on replacement process. Below are the steps on how to contact them:
- Go to Contact Us- 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.
If the above steps did not work, you can also check on Barb's step by step instructions on how to contact support How to get Phone and Chat Support (for Surface Home/Consumer - Microsoft Community.
Thanks again for choosing Microsoft. Hope this helps!
Regards,
RodelioP.