Looks like you would need to use a different charger so we can isolate the issue. You can also visit the nearest local Microsoft Store for them to personally check your Surface Book 2. If you are located in the United States, you can set an appointment here. Should you need to contact support, you can get in touch with the Answer Desk team or our Global Customer Service team.
Regards.
All stores are closed due to Covid 19. Now what? Please reply.