I carry this with me everywhere. It lasts FOREVER. The battery literally lasts a month. I use it to read fanfiction primarily and upload all of my stories. Just a warning, unless you root the device it's basically useless. It would not let me put any fanfiction I downloaded on it until I rooted it. Even now, I can see the cover photos but no descriptions because it was designed to only read B&N books. I found ways around this by just clicking on the book and having the summary the main page, but it's still annoying.