But then the batch file didn't work.
That's pretty vague.
What does not work?
Please attach a full log both for a run with a standalone and installed WinSCP.
To generate log file, use
/log=path_to_log_filecommand-line argument. Submit the log with your post as an attachment. Note that passwords and passphrases not stored in the log. You may want to remove other data you consider sensitive though, such as host names, IP addresses, account names or file names (unless they are relevant to the problem). If you do not want to post the log publicly, you can mark the attachment as private.
Note that installed and standalone binaries are identical.