A good quality ebook reader can be charged through a USB cable getting fully charged in around 4.5 hours and moreover it has internal memory of 4GB out of which only 3 GB is available for using. Incidentally 3 GB memory is good enough for storing up to around 3500 books. Although one is not in a position to download so many books and neither these are required.
According to the data available at the ebook reader reviews, the most popular ebook reader brand manufacturer has created online store having high number of book volumes estimated at 7, 00,000 to offer its brand users great choice in books purchasing and downloading for reading. There is an option of downloading a free sample to view the few chapters of the book before the paid full version of the book can be downloaded. Thus one spends money wisely in purchasing books for building collection of valuable books.
There are more than 1 million books for free downloading, if the person is not interested in buying books initially.