A graphical look at the main advantage of the KX2USBC2

I've now gone through six charge/discharge cycles of my KX2's internal battery using the new KXUSBC2 to charge it and I've used different sources and USB-C cables for each charge.Regardless of the charging voltage used, the KX2 battery gets a complete charge, whether the charging source was 5V or 15V.Contrast that with different source voltages when used with Elecraft's KXIBC2 internal charger:&