Personally, I don't know. I just plug it in and it works.
Perhaps the Mobius 1 was designed with circuitry to work with both battery and capacitor?
The Maxi can also use either battery or capacitor. Different plug to the Mobius 1 though.
GitUp F1 / F1C Hybrid
As noted above, the F1C currently has a few drawbacks. However the 130deg F1.8 lens is rather good, so I have decided to swap the lens modules, installing the F1C lens on a regular F1. So far the results are fairly good - better than using a standalone F1 as a dashcam.