I am using my 3rd...that is my third Sansa View. I returned the first 2 because the batterys would last less that 4 hours total, just playing music, no video.  One of the reasons  I got this thing Is that there are times I need it to play for up to 11-12 hours, not much to ask when it is advertised to play for 35 hours. So do I just keep returning these things untill I get one with a good battery? or is there some other workable way to get 12 hours of play time?