We need 277 volt AC compatible charging. Really.

[ajdelange]

90 is 150% OF 60 and 50% GREATER THAN 60. If you buy a stock at $50 and it trades at $100 your portfolio analyzer will show that it has grown 100%. Thus 277V will push 277/240 = 1.1542 times or 15.42 % more current through a fixed impedance than 240V. But for a fixed impedance the increased power is I*E so power delivered is 1.1542^2 = 1.3280 times or 32.8% more than at 240 and charging time will be reduced by a factor of 1/1.3260 = 0.7530 i.e. 25 faster.

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[ajdelange]

On second thought the impedance woudn't stay the same. If you tell the truck you want it to charge at 30A presumably it regulates charger voltage to control mains draw to 30 A. Thus the power drawn from the mains at 277 would be 1.1542 times or 15.42 % more than at 240V. Assuming the battery current to be roughly proportional to the power applied (since it's voltage doesn't change much) then it would charge at a rate 15.42% greater than at 240 (charge rate depends on current) so charging time would be reduced by a factor of 1/1542 =0.8644 i.e. charging time would be reduced 13.6%. Big deal?

 

[MAR1T]

A block away was a JW Marriott that had 4 Tesla Destination chargers all EVIDENTLY on 277 volt and my TeslaTap would connect but the Rivian shut it down. It was interesting the Rivian would go green and start to “charge” and then immediately go “Red” and fail.

Here is the Kicker there were two Clipper Creek Chargers there with J1772 connectors on the same circuit. I had to WAIT for a BoltEV and I forget which other car to leave to nab one of those spots. The RIvian wouldn’t charge. NOTHING. Zippo. So My guess is while It doesn’t officially support J1772, it can and the cars onboard charger just needs to allow this. The other vehicles were charging.

This caused me a ton of hassle. To be clear I was willing to pay the Hotel parking rates and get to use the charger, but the Rivian wouldn’t accept it. My GUESS is because it was at 277.

@JeremyMKE did your r1t go back to charging normally once you got to a 240V j1772? Did you have to do any reset because charging had previously errored out (presumably from over-voltage protection)?

 

[JeremyMKE]

@JeremyMKE did your r1t go back to charging normally once you got to a 240V j1772? Did you have to do any reset because charging had previously errored out (presumably from over-voltage protection)?

There were no negative ramifications from plugging into the 277 Volt architecture.

 

[BoltEVowner]

I am going to try and reignite this thread. I was in Grand Rapids Michigan this past week and downtown Grand Rapids is PLAGUED by meters on chargers in public garages. It was just plain annoying. The chargers were “free” but then you fed a meter.

I get I get it its just another way to pay. I am not advocating free. I’m not, but to pay the parking garage and then another “meter” was annoying.

I digress, the Hotel I started at advertised as having EV charging. Lies. A block away was a JW Marriott that had 4 Tesla Destination chargers all EVIDENTLY on 277 volt and my TeslaTap would connect but the Rivian shut it down. It was interesting the Rivian would go green and start to “charge” and then immediately go “Red” and fail.

Here is the Kicker there were two Clipper Creek Chargers there with J1772 connectors on the same circuit. I had to WAIT for a BoltEV and I forget which other car to leave to nab one of those spots. The RIvian wouldn’t charge. NOTHING. Zippo. So My guess is while It doesn’t officially support J1772, it can and the cars onboard charger just needs to allow this. The other vehicles were charging.

This caused me a ton of hassle. To be clear I was willing to pay the Hotel parking rates and get to use the charger, but the Rivian wouldn’t accept it. My GUESS is because it was at 277.

If this is a software thing I AGREE with the OP @McRat the more chargers the BETTER. Especially in EV lagging parts of the world like the Midwest.

Smart people like @ajdelange thoughts? Could this be a software enabled thing or is hardware required for the onboard charger?

Very disheartening! Have a Lectron Tesla to J-1772 adapter on order, hoping to use with a Tesla destination charger at a Marriott while travelling. Wonder if anyone else has tried the Lectron adapter and got it to work on an R1T? If not, really disappointing.

 

[JeremyMKE]

Very disheartening! Have a Lectron Tesla to J-1772 adapter on order, hoping to use with a Tesla destination charger at a Marriott while travelling. Wonder if anyone else has tried the Lectron adapter and got it to work on an R1T? If not, really disappointing.

Its not the adapter its whether or not the Destination Charger is on 240 or 277. The adapter doesn't adjust voltage.

 

[BoltEVowner]

Very disheartening! Have a Lectron Tesla to J-1772 adapter on order, hoping to use with a Tesla destination charger at a Marriott while travelling. Wonder if anyone else has tried the Lectron adapter and got it to work on an R1T? If not, really disappointing.

Update...Lectron adapter worked great at a Tesla destination charger at two motels where I tried it. No problems whatsoever. Two for two doesn't make for a long series, so would be good to hear others' experiences.

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