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.
How are there no pictures or even links to pictures in the whole article?