Originally Posted by Matriarch
I fill my Kindle with as many books as I possibly can. At present I have ~500 books on my Kindle, and next time it needs to be charged, I'll be upping that number to ~1500. When I get a second e-reader, I plan on putting ~20,000 books on a microSD card. One of the primary reasons that I purchased an e-reader was so that I'd be able to carry my entire library with me, wherever I went - I hoard books.
I have over 2,000 ebooks on my nook touch, but I'm currently in the process of cleaning up and managing calibre, so I plan to have better consistency when I transfer whatever I want over to my nook and/or Kindle.