I'm having an issue with my Ipad2 as well. My first gen ipad never did this. I will have it fully charged. 100%. Go to bed, wake up the next morning and its down to 93%-94%. No apps running, smart cover on so screen goes to sleep right when I close it, ping is off. When I did this on my first gen ipad, it would be maybe 98% the next morning. Mine is defnitely dying faster than it should with no use. Im not doing anything different from my other ipad and I have let mine die completely over 10 times and recharged completely. I am running latest OS