I considered a Leaf awhile back but after briefly driving a plug in hybrid I really want to learn more before I buy. I read about bars of battery status that is used to determine the 5 yr 60k miles battery warranty (degradation). I haven't seen one yet in person but looking at the pictures of the dash for some that are for sale I am not sure I see it. What I do see is like a semi circle string of 14 connected circles and under that it says power.On the left side is a graph that has picture of battery and right side is graph with picture of plug in charger. In the middle there is a graph depicting battery with percentage inside. I am sorry for such a newbie question but could someone explain the meaning and importance of the difference graphs on the dash.