Not sure exactly why, but the battery usage dropped considerably.
Out of the box, it needed to be charged every half day, and wouldn't make it through the night, but now, the battery meter just doesn't want to go down.
I think I'm going to give it a good charge, and see how long it runs off power (and keep track of all my interactions with it).
Also, the bedside mode is a bit squirrely. When it's on power, and in bedside mode, all the lights turn off, and the display dims heavily. But sometimes I wake up, and the display is at normal brightness, and I have to exit bedside mode, and enter it again. Odd.