Quote:
Originally Posted by California98Civic
A second major issue for potential buyers is the worry that it will take four hours to charge the car. Sitting around that long at a fueling station turns some people off.
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dc fast charging will charge a Bolt or a Tesla in 1 hour. Tesla is at the limit of the cable and connector at 120kW charge rate. 300 Amps. This is already almost three times as much power as a modern USA home can source. When they build new dealerships, they have to put in new high voltage cables for miles back to the nearest cross country HV line and install their own substation at the chargers. 8 cars at a station, and more behind them in line. The station is sucking 1,000 kW out of the grid. Would go to 6,000 kW if the cars start charging in 10 minutes. There are other limits holding back fast charging times. Not only the battery inernal impedance.
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It will be interesting to see what the maximum charge rate Tesla will allow in the the new cells of the model 3. New size and the latest chemistry. Since it is a smaller pack than the big model S packs their stations would be able to fill it in 1/2 an hour if the battery will be allowed to charge at 2C.