4 ms·

> 75 kWh / 12 kW = 6.25 hours assuming the battery can be hit with maximum wattage continuously throughout its charge cycle (this is unhealthy). 12kW is nowher

> 75 kWh / 12 kW = 6.25 hours assuming the battery can be hit with maximum wattage continuously throughout its charge cycle (this is unhealthy). 12kW is nowhere near the max charging speed. Here is the charging curve with a peak at 250kWh when DC charging: https://evkx.net/models/tesla/model_y/model_y_long_range/chargingcurve/ https://evkx.net/models/tesla/model_y/model_y_long_range/cha...

greenavocado 2y ago
It is if you are charging at home. To achieve 250 kW of power, the Supercharger must supply much higher voltage and current than what is available from standard 120/240V circuits. For instance, Tesla Superchargers typically operate at voltages around 400-500V DC and deliver currents of up to 500 amps or more. Unlike residential power, which typically uses single-phase electricity, Superchargers often use three-phase power. Three-phase power allows for more efficient transmission of large amounts of electricity and is commonly used in industrial settings. The voltage supplied to a Tesla Supercharger is typically in the range of 480 volts AC (alternating current) for three-phase power. Inside the Supercharger, this 480V AC is converted to a higher DC (direct current) voltage, typically in the range of 400-500 volts DC, which is suitable for charging the vehicle's battery. The cables used in Tesla Superchargers are specially designed to handle very high currents. For instance, to deliver 250 kW at a voltage of around 400V DC, the current would need to be around 625 amps. To manage the heat generated by such high currents, Tesla employs liquid-cooled charging cables. These cables have an internal liquid coolant system that actively removes heat from the cable as electricity flows through it.
- thebruce87m 2y ago
  > It is if you are charging at home. I’m not sure why you are focusing on AC vs DC charging when your original assertion was related to the maximum wattage the battery can handle, which as I said is much bigger than 12kW. Also, even the 12kW would be the wrong maximum for home charging. The Model Y has an 11kW onboard charger for converting AC to DC, so if you have a 3-phase supply at home then this is the maximum your car can convert (NOT that the battery can handle as you suggest). If you have single phase then it’s 7kW. https://www.tesla.com/en_gb/support/charging/onboard-charger https://www.tesla.com/en_gb/support/charging/onboard-charger
- gruturo 2y ago
  > Unlike residential power, which typically uses single-phase electricity, Most people (myself included) who charge at home with any regularity will buy a wall-box, those are often 3-phase (mine is). Might be different in US of course, but almost every building here (Germany) receives 3 phases.

greenavocado 2y ago

It is if you are charging at home. To achieve 250 kW of power, the Supercharger must supply much higher voltage and current than what is available from standard 120/240V circuits. For instance, Tesla Superchargers typically operate at voltages around 400-500V DC and deliver currents of up to 500 amps or more. Unlike residential power, which typically uses single-phase electricity, Superchargers often use three-phase power. Three-phase power allows for more efficient transmission of large amounts of electricity and is commonly used in industrial settings. The voltage supplied to a Tesla Supercharger is typically in the range of 480 volts AC (alternating current) for three-phase power. Inside the Supercharger, this 480V AC is converted to a higher DC (direct current) voltage, typically in the range of 400-500 volts DC, which is suitable for charging the vehicle's battery. The cables used in Tesla Superchargers are specially designed to handle very high currents. For instance, to deliver 250 kW at a voltage of around 400V DC, the current would need to be around 625 amps. To manage the heat generated by such high currents, Tesla employs liquid-cooled charging cables. These cables have an internal liquid coolant system that actively removes heat from the cable as electricity flows through it.

thebruce87m 2y ago
> It is if you are charging at home. I’m not sure why you are focusing on AC vs DC charging when your original assertion was related to the maximum wattage the battery can handle, which as I said is much bigger than 12kW. Also, even the 12kW would be the wrong maximum for home charging. The Model Y has an 11kW onboard charger for converting AC to DC, so if you have a 3-phase supply at home then this is the maximum your car can convert (NOT that the battery can handle as you suggest). If you have single phase then it’s 7kW. https://www.tesla.com/en_gb/support/charging/onboard-charger https://www.tesla.com/en_gb/support/charging/onboard-charger
gruturo 2y ago
> Unlike residential power, which typically uses single-phase electricity, Most people (myself included) who charge at home with any regularity will buy a wall-box, those are often 3-phase (mine is). Might be different in US of course, but almost every building here (Germany) receives 3 phases.