Charging from 50amp NEMA 14-50 plug

[Cactus]

When I plug my Model S into the NEMA 14-50 outlet via NACS connector in my garage, it charges at 25-26 miles per hour. When I use the same NEMA 14-50 outlet to charge my new R1S with Rivian's CCS charging cable that came with the vehicle, it charges at only 12-14 miles per hour.

Does anyone know if I put a J1772 adapter on my Tesla NACS connector and plug it into the R1S, will the Rivian charge at 25 miles per hour?

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[Thedude]

No. Ignore the miles per hour charge and look at the kilowatt per hour charge. You’ll likely find that they are the same. The same amount of electricity is going into both batteries it’s just that the Rivian is far less efficient at using that electricity to drive the vehicle. It makes sense as the Rivian weighs quite a bit more and is far less aerodynamic.

 

[evguy]

When I plug my Model S into the NEMA 14-50 outlet via NACS connector in my garage, it charges at 25-26 miles per hour. When I use the same NEMA 14-50 outlet to charge my new R1S with Rivian's CCS charging cable that came with the vehicle, it charges at only 12-14 miles per hour.

Does anyone know if I put a J1772 adapter on my Tesla NACS connector and plug it into the R1S, will the Rivian charge at 25 miles per hour?

It won't. The Tesla gets more mph while charging because it's much more efficient than a Rivian - gets more miles out of each kWh. I charge my Model 3 at 32A, and my Rivian at 48A, but the Model 3 still adds more mph than the Rivian because of the difference in efficiency.

The only way to charge your Rivian at 25 mph is if you charge at 48A (requires a 60A circuit). And that's if you have the 21" road wheels. If you have the 20" AT wheels (like I do), you'll get about 22 mph.

 

[SANZC02]

When I plug my Model S into the NEMA 14-50 outlet via NACS connector in my garage, it charges at 25-26 miles per hour. When I use the same NEMA 14-50 outlet to charge my new R1S with Rivian's CCS charging cable that came with the vehicle, it charges at only 12-14 miles per hour.

Does anyone know if I put a J1772 adapter on my Tesla NACS connector and plug it into the R1S, will the Rivian charge at 25 miles per hour?

The Rivian portable charger is only 32 amps (7.6 kW) you can buy a 40 amp (9.6 kW) charger for that Nema 14/50 and you would get 18-19 miles an hour on the Rivian.

 

[Cactus]

Thanks for the explanations.
Did some research and Emporia seems like a good EV Charger. Going to order it and hard wire it to a 60 amp circuit. Well, an electrician will do the wiring! If I do it I will probably burn my house down.

 

[SANZC02]

Thanks for the explanations.
Did some research and Emporia seems like a good EV Charger. Going to order it and hard wire it to a 60 amp circuit. Well, an electrician will do the wiring! If I do it I will probably burn my house down.

Emporia is a decent charger, I have 2 of them, they are built very well and have a decent app. if you run it at 40 amps you will get between 18 and 19 miles an hour from that 50 amp circuit. You can always upgrade the line later.

I charge my Model S as well with it using the Tesla adapter and get around 27 mph.

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