I hear a lot of self-contradictory information on cell phone batteries. It is best to charge up your cell phone battery and keep it charged between use or to use it completely and then put it on charger? Then I also hear that if you leave it on the charger after the battery is fully charged that will damage the battery. I am perplexed. I want help from you guys about what exactly can I do for longevity of cell phone batteries? Keep it charged before use or charge it when it requires it or dead? Please get back to me at the earliest.