Just to address some of the points made -
This is the mouse battery (Guessing the Wireless Keyboards using Intellitype
also generate the Popup) not a laptop battery. If it goes dead the worst the
can happen is I can't move the pointer (install new batteries then. The popup
box starts coming up at "Low Battery" Power and will keep popping up until
the Battery is "Critically Low" Time from Low to Critical could be from 1
week to a month. I don't need to see the popup when the battery is Low, but
mouse is functioning.
The main issue is that the popup box, when it pops up will crash a
fullscreened program to the Desktop.
And there's no need to replace the Batteries when the Low Warning pops up,
when you still may have weeks of mouse use left.