You can download the latest or older versions of BatchTools directly from this page.
Latest Version
The latest version of BatchTools is:
BatchTools-1.11-Install.exe 24Jul18. Add unsorted option for “ask list”.
Older Versions
Sometimes a new version breaks something and you need to roll back. Sometimes you just liked the old version more. Whatever the reason, if you want to use an older version you can download it from here:
BatchTools-1.10 Install.exe 20Jan17. Initial release.