Hi 이경재 / Lee,Kyoungjae,
Welcome to Microsoft Q&A!
I understand you need the UN38.3 Test Report (Surface Go 4 battery) for transport and logistics. However, please note that this is just a user-to-user support forum, limited to providing guidance on technical issues. We do not have access the commercial team.
The documents requested are handled through Microsoft’s authorized compliance and commercial channels. Please check out Battery Compliance | Microsoft Legal for the Lithium Battery UN 38.3 test summary and other related information.

If you purchased the Surface Go 4 through a reseller or distributor, you could also contact them first as they can request the UN38.3 documentation on your behalf. Have a good day!
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