title_body: How to load large mobi files on a Kindle e-reader?
upvoted_answer: Usually a .mobi file actually includes a couple copies of the book in different formats. Is the .mobi file much larger (like, multiple times) than the epub file? This is the giveaway. The KindleStrip plugin (http://www.mobileread.com/forums/showthread.php?t=96903) might help you remove that excess content to bring the file down to a manageable size.