Nono, of course all tests were performed at a far-from-full battery.
Though more like 50% due/thanks to the power efficiency of the J2.
Though, having read this:
… i decided to to another test as i might have had a lot of screen-on time when i have charged it otherwise.
So now i have put about 30% into it, starting from 50% taking 24W and now dipping below 20W when coming up on 80% charge.
The highest battery temp i saw was 38.8 (read over SSH as to have it fully screen-off..
I’d barely call the phone lukewarm, let alone hot - IR thermometer says 35 degrees.