I have heard of some J1772 Chargers that go as high at 70 Amps (16.8kW) but they are rare. Most EVs do not have onboard chargers larger that 30 or 40 Amps. My Model 3 standard range Tesla has a 32 Amp charger and the long range version has a 48 Amp onboard charger. The Tesla HPWC can go as high as 80 Amps (64 Amps continious) but most Teslas do not have an onboard charger that big. I am not sure what the practical AC max is other than the above limits. DC charging is at typically 400 volts so more kW rates are possible. The practical limit there is how well the battery in the car can dissipate the heat generated from charging at 3 or 4 C ratesthought 11kw was practical max for most usa wall charging.
Yeah he is talking about a 2018 Model S. That is the same as my 2016 Model X. That was and still may be the standard for those two models which don't have as efficient drive trains as the Model 3 and Model Y. The Long range versions of the Model 3 and Y have the 48 Amp charger but my Standard Range Model 3 is 32 Amps. Before Tesla went to the 48 Amp onboard chargers there was a smaller one but an option for two. I can't keep track of all the iterations. It looks like they have now settled at 32 and 48 Amps. I have a deposit on a Cybertruck and as my mid 2022 estimated delivery date approaches i will have to pay close attention.240V * 48A -> 11,520W
It will work but I can not tell you if it would be economical. Tell us more about your rates? I have been charging two EVs in California for eight years and it was worth the extra expense of getting a building permit because the Net Metering policy. That policy made it possible to store energy on the grid and get credit at $0.30 to $0.50 per kWh. I can use that power during off peak times to charge my EVs at $0.18 per kWh.Any reason this wouldn't work?
I have a similar question so maybe y'all can help - because from what I have read here, it sounds like it should work. I bought Will's book, have watched his videos, and read multiple posts here so I think I have it figured out.
I have a 2018 Tesla Model 3 Mid-range (210 miles range with 50 kW battery) RWD. In other words, I got the cheapest Tesla they offered at the time. I charge it today in the garage using the standard 120V outlet at 12amps. Yes, this means it takes overnight to recharge from 20% to 80% ... and I am just fine with that.
We were considering putting 8 SanTan Solar T Series 250W solar panels (~$500) on the roof of the barn, hooking them into a PIP LV2424 MSD 24V 2.4kW, 120V Output, 2kW Solar Input 80A Mppt (~$700), and hooking it into a DIY 24V battery I would build (~$900 and 3 month wait for cells + ~$150 BMS). This would give us ~3,584 Wh battery at 24V to use to charge the Tesla using the 120V outlet. Total cost should be ~$2,500.
This would all be in the barn - nowhere near the house and not hooked up to the grid. Shouldn't need any permits.
If power goes out, we could partially charge the car or run an extension cord to the kitchen and have power in one room.
Any reason this wouldn't work? If so, if we got 4-5 hours of sun a day, how much could I charge the Tesla each day?