The battery life is so poor, it's distracting me from reading. I can practically watch it count down through the percentages in real time.

And as for using Audible - the drain is at least three times as fast. I doubt it would last even two hours on Audible.
I've ordered a lipstick-sized battery pack, so I can have that beside me when I read and take it with me in my purse. So hopefully this will improve how I feel about this.
In the meantime, I've switched off the percentage indicator.
Here is the tiny battery extender I bought:
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1