HDMI - Screen mirroring / Andromium

Ah, I see your point.
Can’t say that I know … I don’t use it for convergence, I just got it

  • as a backup solution for a quick presentation in case my workplace’s notebook breaks
  • in case my phone’s screen breaks and I still want to navigate my phone for emergency measures.

… and I have an additional battery and an external battery charger.

Hmm … looking at that post again right now, how about MyPhoneExplorer’s screen mirroring? The phone must be connected to the PC via USB for that, and I just checked … it charges while MyPhoneExplorer mirrors the screen.
Might lag a tiny bit, but for mainly editing text it should be ok.