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Charging Choices

I have seen a number of people asking about the various charging configurations. It took me a while to sort it out. The table below summarizes my understanding. Corrections and comments welcome.

  • Household Plug (US) using included Universal Mobile Connector
    Typical Circuit: 120v/20 amp
    Range recovery rate: 6 miles / hour

  • Dryer Plug (US) using included Universal Mobile Connector
    Typical Circuit: 240/30-50 amp
    Range recovery rate: 20-30 miles / hour

  • J1772 using included Universal Mobile Connector
    Typical Circuit: 240/30 amp
    This is the 'standard' EV plug found en-route. Higher amperages available over time.
    Range recovery rate: 24 miles / hour

  • High Power Connector (HPC)
    Typical Circuit: 240/50 amp
    Must purchase and install HPC ($1,200 + installation)
    Range recovery rate: 30 miles / hour

    Typical Circuit: 240/100 amp
    Must purchase and install High Power Wall Connector ($1,200 + installation). Car must be equipped with a second onboard charger ($1,500).
    Range recovery rate: 60 miles / hour

  • Super Charger
    Typical Circuit: NA
    Will be available en-route over time. Locations TBD. Only ~75% of battery range can be charged this quickly.
    Range recovery rate: 300 miles / hour

I disagree.

If you're never going to charge using more than 50 amps at a time for two cars, then one 50 amp circuit would be enough - even if you have two plugs available on that circuit. (You might program the cars to charge at different times.)

If you're going to use both 50 amp circuits at the same time, you'll need 100 amps available, whether it's two 50 amp circuits or one 100 amp circuit makes no difference. You still have to have enough copper to get the amps there. The only difference would be that you might want to put separate circuit breakers on each of the two vehicles. I wouldn't; I'd rather let some future car draw more than 50 amps on schedule if it's capable of doing so.

Mycroft is exactly right; particularly if you will have separate metering for charging the EV to take advantage of night time reduced rate charging if your utility company offers that (http://sdge.com/clean-energy/electric-vehicles/ev-rates).

Is the model S compatible with the Blink charging stations? There seems to be a lot of them in places such as Wallmart and Ikea.

Is the model S compatible with the Blink charging stations? There seems to be a lot of them in places such as Wallmart and Ikea.

Yes, with the use of the J1772 public charging station adapter that will come with the Model S.


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