My mid 2016 built X90D was indicating about 36 KWh used at 50% down from a max charge so I was concerned. As a test I ran it down for the first time to zero and did a max range charge to 100% and the dash indicated 73 KWh. Is this normal? I was expecting around 84 KWh. My email to Tesla service was answered politely with the indication that they will be contacting me with more info. Thanks for anyone's experience with low battery capacity.