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AC charging limits

CyberMD

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Does your electrical panel have the additional capacity?
How often will you come home with an empty battery two days in a row?
I have the extra space and the key is having the ability to charge more quickly. All else being equal who wouldn't want the fastest possible charge rate. It would also allow more amperage to flow in reverse when sharing power back to the house in a power outage.
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Crissa

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I have the extra space and the key is having the ability to charge more quickly. All else being equal who wouldn't want the fastest possible charge rate. It would also allow more amperage to flow in reverse when sharing power back to the house in a power outage.
Or you could just not carry around that bulky charging equipment and leave it outside the truck where it can be cooled more easily.

-Crissa
 

Woodrick

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I have the extra space and the key is having the ability to charge more quickly. All else being equal who wouldn't want the fastest possible charge rate. It would also allow more amperage to flow in reverse when sharing power back to the house in a power outage.
By space are you talking about physical space or load capacity. I'm talking about load capacity.

Sure, if you had more bi-directional inverters, you'd get more in both directions.

But it doesn't and Tesla moved away from it about 5 years ago. It is assumed that there was little uptake. And there really isn't the need. It used to be an option on the X and the S.

How many times have your car taken more then 3 hours to charge?
 

tenetke

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Exactly what I do. I charge when I’m home daily. I only drive 80-100 miles a day and 48amp is enough. I have a Ford Charge Station Pro but it’s still in the box because the 48a I use for a plug-in hybrid works fine for my Lightning.
 
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Or you could just not carry around that bulky charging equipment and leave it outside the truck where it can be cooled more easily.

-Crissa
wouldn't that mean that i would have to buy a ac/dc converter at every place i want to charge? Like one for my primary home, 1 for my daughters home, work, parent’s homes etc? in most cases it’s relatively low cost to add a nema 15-40 plug in a garage I’ve been able to have an electrician install a nema 15-40 for as little as $350. (the panel was in the garage and was a raised mount). Because the capital investment has been so low I’ve been able to add them many places. In the case of my parents home i just added a plug to an old a/c circuit that cost me less than $100. (The circuit wiring are all rated for 30amps and the a/c is no longer in use).

I have plugs at 3 work locations 2 family members and have gotten friends to adopt the EV lifestyle and chargers at their homes.

If i had to purchase the ac/dc converter for each location I don’t think i would have installed such a robust home charging network.
 


Woodrick

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wouldn't that mean that i would have to buy a ac/dc converter at every place i want to charge? Like one for my primary home, 1 for my daughters home, work, parent’s homes etc? in most cases it’s relatively low cost to add a nema 15-40 plug in a garage I’ve been able to have an electrician install a nema 15-40 for as little as $350. (the panel was in the garage and was a raised mount). Because the capital investment has been so low I’ve been able to add them many places. In the case of my parents home i just added a plug to an old a/c circuit that cost me less than $100. (The circuit wiring are all rated for 30amps and the a/c is no longer in use).

I have plugs at 3 work locations 2 family members and have gotten friends to adopt the EV lifestyle and chargers at their homes.

If i had to purchase the ac/dc converter for each location I don’t think i would have installed such a robust home charging network.
I believe @Crissa was being a little factious.

I believe (if I remember the thread correctly) that the OP would only need it at home, where the truck would stay mostly. Now if they stayed in different places all the time, that's another story.

Just a little tibbit.
First, I'm assuming that you are probably referring to a 14-50 plug, not 15.40. (We all get things mixed up when typing)
The NEMA 14-50 plug is going to be quite suitable for 99% of the forum member, because you just don't use 100% of the battery daily.
The NEMA 14-50 plug must be derated from 50A to 40A as per code for EV charging, because it is considered a continuous load. That brings the max current down to 40A.
The Tesla wall charger is capable of 45A, but it must be installed with the correct wire size for at least a 65A circuit. That just raises the cost for 10% that most people will never use.

I'd love you to install one for me. Panel is only 75ft away and two sidewalks are in the way.
 
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Your correct i intended to state nema 14-50 not 15-40. I agree
 

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i know the cyber truck will be successful with the soccer dads. But it needs to charge at home over night 9hours max including the range extender. If not most people who work out of their trucks will allot extra time in their work day and spend 2x-3x more for energy to charge their trucks.

This is a solvable problem and i think it only becomes unacceptable with the range extender battery.
You are a 100% match for the target audience Tesla is looking at with the range extender. Of course, we all wish the range was already there, but you fit every aspect of the description.
 
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I believe @Crissa was being a little factious.

I believe (if I remember the thread correctly) that the OP would only need it at home, where the truck would stay mostly. Now if they stayed in different places all the time, that's another story.

Just a little tibbit.
First, I'm assuming that you are probably referring to a 14-50 plug, not 15.40. (We all get things mixed up when typing)
The NEMA 14-50 plug is going to be quite suitable for 99% of the forum member, because you just don't use 100% of the battery daily.
The NEMA 14-50 plug must be derated from 50A to 40A as per code for EV charging, because it is considered a continuous load. That brings the max current down to 40A.
The Tesla wall charger is capable of 45A, but it must be installed with the correct wire size for at least a 65A circuit. That just raises the cost for 10% that most people will never use.

I'd love you to install one for me. Panel is only 75ft away and two sidewalks are in the way.
I agree i‘m a perfect candidate for the range extender. The problem is that with the current 48amp onboard charger combined with the range extender it’s going to take somewhere around 14 hours to charge. That’s going to push me into the more financially and time expensive super charger network.

Also the truck is comes home with me just as does my 22 model X now. And my 18 model X did 2 years ago. Starting my electric journey with the 18 model X that had a usable range of around 200 miles. I built a “home charging” network around the places i spent most of my time. As mentioned above i even got friends to adopt the EV lifestyle. By doing this in the normal course of my day I’m able to work and charge at the same time so i can arrive home around the 10% state of charge. Then charge fully overnight.

I think it’s critical that the cyber truck be able to charge in around 8 hours in the home setting.
 

Rutrow

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Or you could just not carry around that bulky charging equipment and leave it outside the truck where it can be cooled more easily.

-Crissa
wouldn't that mean that i would have to buy a ac/dc converter at every place i want to charge? Like one for my primary home, 1 for my daughters home, work, parent’s homes etc? in most cases it’s relatively low cost to add a nema 15-40 plug in a garage I’ve been able to have an electrician install a nema 15-40 for as little as $350. (the panel was in the garage and was a raised mount). Because the capital investment has been so low I’ve been able to add them many places. In the case of my parents home i just added a plug to an old a/c circuit that cost me less than $100. (The circuit wiring are all rated for 30amps and the a/c is no longer in use).

I have plugs at 3 work locations 2 family members and have gotten friends to adopt the EV lifestyle and chargers at their homes.

If i had to purchase the ac/dc converter for each location I don’t think i would have installed such a robust home charging network.
The "Mobile Connector" you're referring to isn't an AC to DC converter. it's merely an AC charging cord with a little logic capability attached. The "Charger" Crissa is talking about is a component permanently installed on the vehicle in the doghouse above your battery. The old, optional Dual Chargers, that allowed for 80 amp of charging is another 36 lb. component that had to be installed on your car. That 36 lbs. doesn't count the coolant that needs to be added to cool it. It's not an insignificant amount of weight for an EV. It is better left off.
 


Crissa

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wouldn't that mean that i would have to buy a ac/dc converter at every place i want to charge? Like one for my primary home, 1 for my daughters home, work, parent’s homes etc? in most cases it’s relatively low cost to add a nema 15-40 plug in a garage I’ve been able to have an electrician install a nema 15-40 for as little as $350. (the panel was in the garage and was a raised mount). Because the capital investment has been so low I’ve been able to add them many places. In the case of my parents home i just added a plug to an old a/c circuit that cost me less than $100. (The circuit wiring are all rated for 30amps and the a/c is no longer in use).

I have plugs at 3 work locations 2 family members and have gotten friends to adopt the EV lifestyle and chargers at their homes.

If i had to purchase the ac/dc converter for each location I don’t think i would have installed such a robust home charging network.
You want to charge above 11kW at these locations? Why?

-Crissa
 

Crissa

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To be honest, I think some day dc charging will be common enough that yes, we'll all want these chargers left in the driveway.

It would allow for lighter vehicles. Motorcycles would love it.. Most e-bikes offload this already.

-Crissa
 
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You want to charge above 11kW at these locations? Why?

-Crissa
not at all locations. just my home location. The thinking is that CT with extended range battery looks like somewhere around 170kw battery. I think when the cyber truck “goes to work” in the context that it becomes a work truck all kinds of demands will be put on the battery. And these demands will be work related where time is money. The truck needs to be able to charge 10%- 90% In around 8 hours. If not then users who use the CT for work will need to compromise if they go from their ICE work trucks to EV work trucks.

It’s a simple problem to solve. Give the CT with extended battery a second ac/dc inverter and the capability to charge at 70-80 amps.

Tesla did it in the past they just need to do it again
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