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  1. Regenerative Braking Capacity

    I fly electric model airplanes. Since we had NiCad batteries. The first lithium batteries we got had all kinds of limitations. 1C charge rate, 4C (average) discharge, etc. Today just a few years later, we can charge some up to 5C and discharge up to 12C. So I fully expect that EV batteries will...
  2. Good News for Charging Convenience

    I don't see how there could be a valid comparison of EA and Tesla. One installs charging stations for profit. The other makes EVs and has a charging network exclusive to their cars and is NOT a profit center. Tesla started building its exclusive network when it has a small fleet. EA is building...
  3. Rivian - PLEASE DO THIS

    What adapter? Just use the Tesla cord. But yes those physical things with a little software should be doable.
  4. Rivian - PLEASE DO THIS

    As far as I know, Tesla's offer to open it's charging system to others is still open. I have not read anything to the contrary. Here is why I think companies have not taken Tesla up on the offer. Tesla has always said that it will not make the Supercharging network a profit center. Remember...
  5. Rivian - PLEASE DO THIS

    Y'all are making a premium adventure product. One that is intended to take your customers wherever they want to go in comfort and no hassle. So please do the premium thing and become a part of the Tesla charging network. It is designed to service vehicles with far less range than yours. I'll bet...
  6. (Bed) size matters

    A start up cannot afford to begin with a high volume low margin product. Capital costs are too high. They start with a low volume high end product that they can make some money producing. Then use that money and experience to start production of a high volume low margin product.
  7. R1T $69,000 starting price - opinions

    FWIW I have an F150 with a long bed. That's 8ft. It was full today and many Fridays when I pick up donated food from a neighborhood WalMart and take it to the food bank. So I could really use a long bed. I expect that someone will make one eventually. In the mean time I have a reservation for a...
  8. Inside Electrify America’s plan to simplify electric car charging

    So Tesla has Superchargers in the same area using power from the same utility and charges more $/kWh for charging? If the chargers you speak of are Qebec Hydro then I see it as a possibility as utilities have very different financing than other kinds of companies and are not expected to generate...
  9. R1T $69,000 starting price - opinions

    deLmi - I hope you can wait. Most of us will consider ourselves really lucky to live to 89.
  10. R1T $69,000 starting price - opinions

    Problem with capacitor in a BEV. Energy stored in a capacitor is E=½CV² where C is the capacitance and V is the capacitor voltage. So to get the energy out, you must fully discharge the capacitor. BEVs today commonly operate on a battery that is ~300V discharged to 400V charged. How do you...
  11. Inside Electrify America’s plan to simplify electric car charging

    If EA is profitable, they will NEVER match Tesla's charging prices. Tesla maintains that its Supercharging network will not be a profit center.
  12. R1T $69,000 starting price - opinions

    At the rate battery costs are declining, I'd expect the actual Rivian price to be lower than estimated.
  13. Good News for Charging Convenience

    My point was just that the electrical charge rate and miles added to range are related but not equal between different cars. Operating efficiency is very important.
  14. Charging multiple EV’s at home

    Here is my solution. It works great for me. I'm 5'6"
  15. Good News for Charging Convenience

    Charging miles added per hour is what is really useful when traveling. The less efficient the car, the longer you need to charge to travel the same distance. The chart below is a good example using Tesla home charging options for the 3,S and X.
  16. R1T $69,000 starting price - opinions

    Remember that Rivian has a $7500 competitive advantage over Tesla. That somewhat compensates for the risk taken by the buyer because Rivian has not produced anything yet and they have no equivalent charging network in place..
  17. Good News for Charging Convenience

    Just drove our Model 3 Performance form DFW to Phila and back. Superchargers are great. Stopped about 20-40 min at each. Overnight charged at the Hotel.
  18. Charging multiple EV’s at home

    From your main panel you have a 100A breaker that feeds a sub panel with a 100A breaker and a 50A breaker? The HPWC is on the 100A sub panel breaker and the NEMA 14-50 is on the 50A sub panel breaker?
  19. Good News for Charging Convenience

    Just drove my Model 3 to Phi and back ~3,000 miles. Supercharging was great. Typically 30-40 min or less per leg. Legs were 135-200 miles. Efficiency was 270-300 Wh/mile. We saw 140 kW from the Supercharger or a little more on some stops. Superchargers are rated at 150 kW mostly now. Tesla...
  20. Regenerative Braking Capacity

    ajdelang - No. As my wife will be happy to explain to you the capital is gone whether I use the system or not and to whatever extent. Sounds like your wife is an accountant or lawyer. I am speaking pragmatically. If I spend more on something than I need to, it's wasted capital. If I own...


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