How are you going to boost the volts from 200 to 250?I will be getting two, one for home, now I can share the circuit between the model S and the RAV4 EV, using the new HPWC, and one to keep in the RAV4 EV for destination charging. I can boost the 200 volts, at most destination charging locations, up to 250 volts and get the full 10kW charge rate. 40 amps at 250 volts = 50 amps at 200 volts.