Batch Explorer supports connecting to national clouds.
Login to a national cloud
You will have to change Batch Explorer environment. To do so, on the top menu bar, change Environment > Azure environment to the desired one.
Batch Explorer should close and show the login window to the specified cloud environment.
To revert to public cloud go back to the menu item Environment > Azure environment and pick Azure Public
Please note that the national cloud Batch API can lag behind the public Batch API versions. The Batch Explorer insider version might release an upgrade for public cloud to get the newest functionality, which may in turn break the national cloud experience. While the national cloud Batch API is out of date, users can stay on the stable version of Batch Explorer, which will always be compatible with both the public and national clouds.