I have the MAXX and it certianly does last. I had the RAZR before this and if I pushed it, I could deplete the battery in about 6-7 hours. However, I repeated got 17 -20 hours easily on the Razr with moderate use. My wife has the Razr and is a low usage person. At this moment she is unplugged for 15 hours and is at 52% battery remaining.