I have an ipod touch with is 3.1.2 jailbroken. Only about 2 months old and is a replacement for the broken ipod i sent to apple. I have roughly 1500 songs on it and have it on shuffle using all songs when i use it. I had it almost fully charged and use it for about 30 mins. I have the battery percentage and it went down to 49% in that half hour. Does having the ipod on shuffle using your entire library drain the battery fast? For organizing and choosing a random song to play and sort them.