I hear a lot of self-contradictory information on telephone batteries. It is best to charge up your telephone battery and keep it charged between use or to use the batter up and then put it on the charger? Then I also hear that the telephone batteries get damaged if it is overly charged i.e charging it even after it is fully charged. I am perplexed. I want help from you guy about what exactly can I do for longevity of telephone batteries? Keep it charged before use or charge it when it requires it or dead? Please get back to me at the earliest.