Has any one had problems with there battery not staying charged after a all nights worth of charging it ? I am having a little problem with this and I went over to radio shack and bought me another battery and put it in, charged it all night and took it off charge, two to three hours later the battery indicator beeps letting me know that it is low. I took the batery back and they gave me another one and I got it on charge as I speak. Now if this happens again what else could be the problem ? I dont hardly ever use the back light ,and I put it on battery saver on the radio, I just dont know what else to do. Any ideas ?????