Samsung S7 Edge 3 LED indicators

[AC Question]

The S7 Edge has 3 LED indicator lights, one of which is hidden, but is always solid green when the phone is 100% charged and my Mophie backup battery case is in place. Two questions: 1. What do all 3 individual LEDs do and 2, Does this mean that the Mophie is still charging the phone even though it shouldn't be since I did not activate the charging function.