Most reviews of the new Kobo I've seen do mention the battery life, which is in weeks. It's hard to say though, since it depends on how much you read, what back

Most reviews of the new Kobo I've seen do mention the battery life, which is in weeks. It's hard to say though, since it depends on how much you read, what backlight level you use, and if you use the stylus (for the Libre Color). You do have to use the backlight a bit more than greyscale ereaders, since the additional layer means that less light gets through from the greyscale layer. My wife was surprised at how dim it is compared to her (old, inexpensive) Kindle.