What was the battery state of charge in those three charges? Was it 100%? What was the state of charge at the beginning of your charge? How many hours did you charge? Finally, the range number displayed on the dashboard is not a good way to measure how much juice you are getting from your home charger (EVSE). The range number is an estimate of how much range you might get based on your prior driving efficiency. If your driving efficiency is bad then your estimated range is going to be poor.
To get the battery state of charge, you need to press the EV button and read the battery meter.
