The mini sips a truly tiny amount of power. I wonder what the smallest/lightest UPS could could bundle it with would be.
But at this point.. you’ve got a shit laptop.
(Apparently the laptops do a suspend to disk depending on battery remaining, so the OS does support it. It'd be nice to have it available! The disk space required could become annoying if you only bought the 1 TB SSD for your fancy 512 GB Mac though.)
The shutdown thing didn't bother me, and in fact the Mini was lighter than a Macbook Air at the time. So all in all it was pretty convenient.