This week my battery has been around 20% at the end of the day, but yesterday I had to make a few calls and it went to crap before the day was over. Good thing I bought a new battery recently so that I could replace it. I haven’t done much to optimize it except root the phone and download SetCPU, so there’s probably more I could do to make it work better. Still, I wonder what the battery would be like if I actually was using 4G (still not available in San Diego for Sprint).