So I hear everyone complain about the Oystrs battery life being absolutley horrible. Well, I was having that same problem. It took me awhile to figure it out but I was sittin in my car at night and noticed that the backlighting on the keys would shut off when I closed it and then come back on about 5 seconds after it was closed and stay on.
I ended up just turning the backlighting off and my battery life has been great since.
Now I figured it was just a problem with my phone but I thought I might post this just in case.