I found the following thread that says "CA7 has the ability to schedule work to a Windows Server running the CA Workload Automation Agent. The agent is able to executes scripts that are accessible to the server."
Whether this applies to batch files specifically, I do not know. Please update this thread with your findings if you have a chance to test this. It seems like these waters may be uncharted, so I'm sure your experience could benefit others in the community.