[Richwood]

Maybe I have too many older ebook readers but My Kindle 2, Kindle DX, Kindle Keyboard, Kindle NT and Sony PRS 350, PRS 650, PRS 950 and PRS T series readers all still have batteries that will hold a charge well enough to use for a days reading or longer. Currently using a Kindle DX to read a book I downloaded long ago.

I also have the newest readers from Kindle, Kobo and Nook but do not really find the added bells and whistles to be that necessary for my reading enjoyment. In my experience the major reader manufacturers have always tried to fit high grade lithium ion batteries to their book readers so battery life has not been a major issue. Particularly true as ebook readers are very low power devices compared to cellular phones or color LCD tablets so that frequent recharging is not as necessary, particularly if wifi/3g/4g communication is off and reading light use is minimized.

I would add that unless the internal lithium ion battery is totally dead then continued use of a reader via a current technology 5000 to 10000 mAh super thin and compact USB battery pack is possible. Attach to the reader back or case via velcro, double stick tape or magnets and the shortest USB cable available.