AC charging limits

[Lookmanobrains]

Thanks for the screen shot!!


I would think the 48amps is ok with the standard battery but i hope Tesla has a way to get more home charging amps with the range extender battery.

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[Woodrick]

Thanks for the screen shot!!


I would think the 48amps is ok with the standard battery but i hope Tesla has a way to get more home charging amps with the range extender battery.

No indications that it will happen. While some businesses do, many homes barely have enough capacity to handle 48A, which requires a 60A breaker.

 

[Lookmanobrains]

i agree no indications. But Tesla has understood that electric cars need to be better than ICE cars for people to transition to them. I’m telling you even if I am an edge case. It only takes a couple of times for someone to not be able to get a full charge in 8 hours or less. For them to then complain how electric cars only work if you let them charge all day.

it’s also important to note that just because the truck would be able to charge at 80 amps doesnt mean you would have to charge at 80amps. Tesla already has class of the industry software that let’s users choose how many amps they want to pull and the car even remembers settings by location.

For the cybertruck to work on a mass scale these small details need to be addressed.

 

[Woodrick]

i agree no indications. But Tesla has understood that electric cars need to be better than ICE cars for people to transition to them. I’m telling you even if I am an edge case. It only takes a couple of times for someone to not be able to get a full charge in 8 hours or less. For them to then complain how electric cars only work if you let them charge all day.

it’s also important to note that just because the truck would be able to charge at 80 amps doesnt mean you would have to charge at 80amps. Tesla already has class of the industry software that let’s users choose how many amps they want to pull and the car even remembers settings by location.

For the cybertruck to work on a mass scale these small details need to be addressed.

45A @ 240V should be able to charge the car in 12 hours.

Are you planning on running that battery from 100% to 0% multiple days in a row?

 

[RandyS]

I was hoping for something a little bit higher than 48A because of the added range extender battery option, but I can live with 48 amps...

 

[CyberMD]

So not sure if anyone remembers pre refresh Model X/S could home charge at somewhere around 72amps. That is of course if you had home charger that was capable putting out that much amperage. Tesla Gen 2 home chargers were capable of a max of 80 amps if connected to a 100amp circuit.

With the refresh of the Model X/S the brought the max home charging down to 48amps inline with the model 3/Y. They also changed the max charging rates on the Gen 3 home chargers To 48amps when connected to a 60amp circuit.

So this brings me to the question what’s the maximum AC charge the Cyber truck can handle from a home charger? Will my Cybertruck take all 80 available amps from my Gen 2 charger that is connected to a 100amp circuit?

I have a feeling that with the bidirectional charging higher charging rates for the Cyber truck may be available. But I’m wondering if the Cybertruck will with a simple Gen 2. Or other charger will accept the higher charge rate?

At 48 amp rate It takes me around 7.5 hours to charge my model X from 10%-90%. I think this is important consider that the main Cybertruck battery is approximately 25% larger than the battery in the model X/S this means it’s going to take close to 10 hours to fully charge the Cybertruck main battery. Add in the range extender which i’m guessing is 50kw? now your looking at maybe 14-15 hours to charge at 48amps.

if your like me and carry 1000lb of tools and drive 40k+ a year this could be an issue.

Does anyone know what the upper limit of the Cybertruck is for ac home charging using the tesla home charger. Also what happens to the charging limits when you have the bidirectional charging/backup power option installed.

GREAT question--I was wondering the same thing!

I have 2 of the original chargers that were 100 amp circuit breaker wired units that could handle 80 amps. I was hoping that I could use them on the Cybertruck for faster charges at home. Like all of home chargers I was going to run from the main 200 amp service panel on copper wire.

I have been waiting to install one at my main home and one at my summer place. Presently, I have only wired the newer 60 amp circuit breaker capacity chargers that charge at 48 amps (80% of the rated circuit breaker capacity), I'd much rather have the ability to pull 80 amps for faster charge.

Best to run copper home run to main panel--not from a sub panel and do not skimp on proper gauge copper wire or use aluminum wire. Your electrician can can upsize the copper wire for longer runs but make sure they are following code and manufacturers (Tesla) guidelines.

The cable on these older chargers is MUCH thicker than the presently available home charging cables--almost supercharger thickness... Hopefully the truck will have the capacity to charge with this higher amperage.

 

[SentinelOne]

boo hiss....I have an 80amp charger on a 100amp circuit.....would have liked to have leveraged the capability!

 

[Crissa]

The early Model S had an optional "Dual Onboard Charger" that allowed for 80 amp charging. This was abandoned by Tesla fairly early on. I don't know if its discontinuance was due to low uptake rate on the option? or it was scrapped due to battery harm, or perhaps even overheating/fires in owners home wiring?

Tesla's announced reasoning was that the higher AC rates were needed in the pre-Supercharger-network era, and were no longer needed later.

The charger is actually quite bulky, so you can reclaim cabin space by pairing it down.

The Cybertruck has the same limit as other current Teslas, despite being a hungry beast. There are third-party DC chargers now, if you really need it, you can seek them out.

-Crissa

 

[Woodrick]

GREAT question--I was wondering the same thing!

I have 2 of the original chargers that were 100 amp circuit breaker wired units that could handle 80 amps. I was hoping that I could use them on the Cybertruck for faster charges at home. Like all of home chargers I was going to run from the main 200 amp service panel on copper wire.

I have been waiting to install one at my main home and one at my summer place. Presently, I have only wired the newer 60 amp circuit breaker capacity chargers that charge at 48 amps (80% of the rated circuit breaker capacity), I'd much rather have the ability to pull 80 amps for faster charge.

Best to run copper home run to main panel--not from a sub panel and do not skimp on proper gauge copper wire or use aluminum wire. Your electrician can can upsize the copper wire for longer runs but make sure they are following code and manufacturers (Tesla) guidelines.

The cable on these older chargers is MUCH thicker than the presently available home charging cables--almost supercharger thickness... Hopefully the truck will have the capacity to charge with this higher amperage.

Does your electrical panel have the additional capacity?
How often will you come home with an empty battery two days in a row?

 

[Woodrick]

Tesla's announced reasoning was that the higher AC rates were needed in the pre-Supercharger-network era, and were no longer needed later.

The charger is actually quite bulky, so you can reclaim cabin space by pairing it down.

The Cybertruck has the same limit as other current Teslas, despite being a hungry beast. There are third-party DC chargers now, if you really need it, you can seek them out.

-Crissa

Yep, and probably 99.9% of the cars charging fill up in less than 3 hours. and 80% less than 2 hours.

 

[Lookmanobrains]

Does your electrical panel have the additional capacity?
How often will you come home with an empty battery two days in a row?

Yes. At my home i have a 200 amp panel and my Gen 2 home charger uses a 100amp breaker. So at this location I am ready to charge at 80amps.

At my office location I also have space.

At my daughters house we have a 200amp panel

and at my mother’s home they have 200amp panel from the 1960’s that has enough capacity to switch from the 50amp circuit I currently plug my nema 15-40 in.

i drive a 22 model X and I drive 300 miles round trip 2.5 days a week on average. Most days i have a short 5 minute supercharge stop to make my round trip and then arrive at home around 10%. The super charger network is fantastic and i don’t hesitate to use them when it’s needed but. Supercharging also cost’s 3 times more than my home electric rates.

who want’s their fuel costs to be 3x more than they could be? By the way i think the supercharger rates are more than reasonable. It’s just that charging at home while I’m sleeping is less expensive and does not require me to rearrange my schedule.

The problem is that once i transition to the cyber truck I’m going to be hauling around 1000lbs of tools every day. I’ll also be charging my Milwaukee tools Which will use some of the battery. I’m guessing this combination will mean that I’ll loose around 10-20% range. I‘m guessing I’m going to have to double my supercharging time to 10 minutes. Not a big deal. But I’m still getting home at 10%.

And I’m sure when i tow I’ll experience the same reduction in range that i have in my model X and frankly all of the ICE trucks I’ve towed with. Typically if I’m towing with any vehicle my range is reduced anywhere from 50-70%.

For example i can only tow my 5000lb ski boat about 80 miles before i have to charge. Believe me you don’t want to go below 20% while towing with any electric car.

Because i want to be able to tow the range extender is must for me. I know many people think I an edge case. But this is how trucks are used. Contractors load them with tools put aerodynamic robbing ladder racks on them we tow with them.

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.

 

[Rutrow]

Seeing Tesla lead the way in transitioning vehicle to adopt a 48V architecture, I wonder if they'll ever try to transition our home power from AC to DC?

With solar panels and battery storage/back-up becoming more common there may someday be an opportunity to ditch the inefficiency of inverting DC to AC for all our normal appliances. Anyone who aims to live "off the grid" having a ready supply of DC appliances and electronics would make the change easier and more cost efficient. RVs are slowly making the change doable. DC air-conditioning, refrigerators, inductive ranges, etc. options are becoming plentiful, though not yet all that affordable.

If we make the switch some day, I wonder what home charging capacities will be if you could have a DC charger connected directly to the output from your solar panels? Seems 40-50 kWs might be possible. That's at the low end of DC Fast Chargers today. ?

 

[Woodrick]

Seeing Tesla lead the way in transitioning vehicle to adopt a 48V architecture, I wonder if they'll ever try to transition our home power from AC to DC?

With solar panels and battery storage/back-up becoming more common there may someday be an opportunity to ditch the inefficiency of inverting DC to AC for all our normal appliances. Anyone who aims to live "off the grid" having a ready supply of DC appliances and electronics would make the change easier and more cost efficient. RVs are slowly making the change doable. DC air-conditioning, refrigerators, inductive ranges, etc. options are becoming plentiful, though not yet all that affordable.

If we make the switch some day, I wonder what home charging capacities will be if you could have a DC charger connected directly to the output from your solar panels? Seems 40-50 kWs might be possible. That's at the low end of DC Fast Chargers today. ?

DC high voltage power is a little more dangerous.
Switching a home is the wrong way, lower voltage will require heavier wires.

 

[Lookmanobrains]

boo hiss....I have an 80amp charger on a 100amp circuit.....would have liked to have leveraged the capability!

I’m not sure I understand your comment in the context of this thread?

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