I would like to preserve the health of my phones battery for as long as possible, so I am wondering what the best way to charge it will be. I can easily keep it over 90%, just charge it overnight, then when I get to work charge it from 9-5, so it will only really be off charge from 7-9am then from 5-10pm. But I don't know if this is over charging it, if there is such a thing. Would I be better just charging it overnight and leaving it off through the day? I let it go completely empty then give it a full charge every 6weeks or so. I will be keeping it until roughly when the iPhone version 6 comes out so I don't want it to only last a few hours between charges, when it is coming towards the end of its life.