[Johnny.Bravo]

I hadn't thought about the phone having an internal regulator...that's an excellent point. Years ago I hooked up a laptop to an external battery by cutting the end off of the charging cable and plugging the bare wires directly into the battery. The external battery was much larger and stronger than the laptop's internal battery and the end result was that it fried the internal circuit so that the laptop would now only run while plugged in to the external battery. What was needed was a resistor / capacitor to downgrade the output to the correct levels (which we now have). I imagine this is what these new phones have. I am going to do a little research and see what I can find out.