I have just got my Motorola droid 3 phone. I have just learned about how complicated these batteries are and I donât want to do anything stupid with it. I am charging it whenever the charging percentage goes down to 20. Can someone help me with some advice on how to take good care of droid batteries? Do I wait for battery to go down to 0 percent before charging or is it good to charge it at 20 percent? Please get back to me with relevant replies. Thanks.