Yup, datasheet info is precisely why I’m slightly concerned, hard to tell actual temperature, without a thermometer, but I’d say my hand scale is “freezing, cold, cool, ambient, slightly warm, warm (cosy warmth, like consumer electronics power supplies), hot (side of a mug of coffee, short finger contact tolerable), very hot (more than a short, light touch is painful).
The warmest cell was warm.
I will try a known genuine 30Q (albeit newer in age), and report back.