The Ausdom is a pretty reliable camera, nice overall. The battery may not be a problem unless you intend to use it in a parked car during the summer. If you are going to remove it, or unplug it when parked, I wouldn't worry about it.
(in normal car use)
If you can tolerate ordering the A261 from China, you can get a pretty good deal, and it would be a pretty nice first, or last, dash cam. I haven't used any of the Minis.