Welcome to the forum!
This radio has a built in battery and antenna. Two things that make it a no go for me. I wanted to like this radio when it first came out.
If in fact it has no low voltage cut off protection then you will have to be extra careful and that makes the non removable battery issue even worse. It sounds like call to Midland is in order. Personally I would return it and get a different radio, but I need a removable antenna and batteries that can be swapped for my usage. YMMV.