I'm getting decent battery life. I noticed that screen and radios took up a lot of my power. So I'm pretty careful about turning off Wifi, GPS and BT when I don't need them. This gives me pretty decent battery life. But I've also started using a car dock and the small amount of extra charging it gives allows me to simply forget about the battery. I've got tasker set up to turn off the Wifi and turn on GPS and BT when I dock the X. When I undock, it restores the previous state of Wifi, BT and GPS.