I had this problem occur to me last night, it was extremely weird. For one thing I've always gotten excellent battery life out of my bionic, I guess i'm not a heavy duty ap user or phone user and just use it to talk/text and email sparingly. I've stretched my bionic's battery life to over 24 hours without charging it and normally around 2am my phone has 50%-40% battery life. Also I DO NOT have the extended battery. However last night I went out and as I was driving around 11pm my phone's battery life dropped from 60% to 40% in a matter of seconds, in fact it occurred when I turned Wi-Fi off. I didn't think anything of it, however by 2am my battery was on the verge of dying which has NEVER happened before. Is this a one time occurrence or should I be concerned that my battery somehow became defective over night