It does an excellent job of displaying the battery needs to be charged.
I was in a B&N the other day and wanted to look at the Nooks. They had 2 on display (smaller models) and a tablet.
Both of the Nooks were in stands, and the screens said they needed to be charged. Luckily, there was a cable in the stand. Unfortunately, the cables were micro USB and the Nooks were USB-C.