Hmmm. I can see that by driving it aggressively (or keeping it super hot or super cold inside) the km achieved will fall dramatically, but the amount of usable energy decreases? You use the energy one way or another, either it's there or it's not. If I fill a measuring cup with a litre of water and pour it out slowly or pour it out quickly, when the gauge reads 50% there should be 500 ml left in the cup with the other 500 ml gone. I may have wasted some water by splashing it about when pouring, but I've still used it and it will still be measured as gone. Aggressive usage should make the wh/km go up and the km driven go down, but the % vs used/remaining should be a constant % of total available.
I too had read 72.4 usable in many places, which is why I'm wondering why I seem to have only about 63 kwh usable. See attached images...
Started with 100%, drove without stopping at a reasonable usage rate averaging 218 wh/km.
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