It does not have an internal battery but can use any battery pack that can do 100W output.

I pre-ordered this for a few reasons. One, my experience with butane irons was very different than yours I guess. I hated how long they took and how finicky they were. Then I had to find a safe place to put it while it cooled. This has a cap that can handle the high temp with no issue.

When I need a portable iron it’s to do small quick soldering with long waits in between. This seems perfect for that.