CT charging

[DaBagBoy]

Yeah, FWIW this is a 325kW site, not that it helps when the pack is too cold...

It's a fairly new site for Tesla, I've also seen pathetic 96kw rates at that site and too many times this winter - I blamed the cold as well (even with preconditioning for 50-100 miles on the road) . The CT seems to sip very slowly from a lot of superchargers this past winter.

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[mongo]

It's a fairly new site for Tesla, I've also seen pathetic 96kw rates at that site and too many times this winter - I blamed the cold as well (even with preconditioning for 50-100 miles on the road) . The CT seems to sip very slowly from a lot of superchargers this past winter.

Yep, was there the second day it was open, but my SOC was high and my pack was cold
Sometime may make a special trip just for laughs, but others have already published the current curve.

 

[HaulingAss]

It's a fairly new site for Tesla, I've also seen pathetic 96kw rates at that site and too many times this winter - I blamed the cold as well (even with preconditioning for 50-100 miles on the road) . The CT seems to sip very slowly from a lot of superchargers this past winter.

I think if you were able to review your activity before plugging in and seeing 96 kW charging at a 325 kW charger, you would see that you had not pre-conditioned the battery for 100 consecutive miles. Sure, if it's sub-zero temperatures you should pre-condition for more than 100 miles, but 100 miles should get you to at least 200-250 kW (assuming you've run the SoC down into the teens). I'm super-impressed with the Cybertruck DCFC speeds, even when only at 250 kW chargers.

I've noticed a lot of people are reluctant to go below 30%, LOL!

 

[Outdoors]

I've noticed a lot of people are reluctant to go below 30%, LOL!

Splash and dash with high speed along the way. A splash of power to get you to the next one, and not a bit more. That way the curve is most effective. Yet as you mentioned. Many are scaredy cats and never take advantage of the low end of pack while traveling long distances. Then those peeps tend blame the charger or the truck. Just lack of knowledge or using some AI business.

 

[MeadowShade]

5 or 6 amps is like 1kW. How many days does it take you to charge? I come up with 80 hours.

Extrapolate your numbers to 300000 and over 40 trucks and you might have a data set. Till then you are spreading some funny stuff in the degradation. Likely isn't. 1% is a rounding error on the pack.

One can believe anything from the Internet. This is not one worth believing. As the individual likely does not charge at 5 amps.

Oh my gosh!
I am a person and I was relating my experience. Good grief!
I have been dealing with wind solar and now EV batteries for 30 years. There was a thread in the Virginia CT group that I am also in. The degradation of my batteries was less than 1/3 of anyone else’s and o had nearly 20,000 miles at the time. Yes I do charge at really low rates. I came back from Kentucky last night, a 1,200 miles trip and put it on 10 amps. Ran it up a little today. I do not drive everyday, and am rarely in a hurry. I also drive slower than most anybody in this forum too and get blasted when I say I tow my camper at 60 mph when on the interstate.

 

[MeadowShade]

Splash and dash with high speed along the way. A splash of power to get you to the next one, and not a bit more. That way the curve is most effective. Yet as you mentioned. Many are scaredy cats and never take advantage of the low end of pack while traveling long distances. Then those peeps tend blame the charger or the truck. Just lack of knowledge or using some AI business.

On my trip this past weekend I did the splash and dash a few times but the changes to the charge stop predictor when towing sucks. It acts like I can only go 50-75 miles on a nearly full charge. Truth is, I can go 170+ if I go 60mph and stay around 600wpm or lower.

 

[Outdoors]

Oh my gosh!
I am a person and I was relating my experience. Good grief!
I have been dealing with wind solar and now EV batteries for 30 years. There was a thread in the Virginia CT group that I am also in. The degradation of my batteries was less than 1/3 of anyone else’s and o had nearly 20,000 miles at the time. Yes I do charge at really low rates. I came back from Kentucky last night, a 1,200 miles trip and put it on 10 amps. Ran it up a little today. I do not drive everyday, and am rarely in a hurry. I also drive slower than most anybody in this forum too and get blasted when I say I tow my camper at 60 mph when on the interstate.

If it takes you 80 hours to charge the truck. Your exercise doesn't really help anyone. It actually makes people think this type of charging behaviour is normal, or maybe even required. Yet it is not. Your scientific Facebook poll is anything but scientific. You also use significantly more electricity do what your doing. The overhead makes the amount of electricity put into the truck much less than if you charged at lets say 35 amps. Next you will quote battery university or some nonsense.

Great for you I run my three cars off grid and manage them along with my house. Driven more than a half a million EV miles. Please spare me the I have more experience than you stuff. Put up another panel. Wind is a joke on home level.

Again come back to me with your scientific group of VA cars and trucks when they all have 300k on them. Then measure your silly charging degradation. 20k in miles is a rounding area and geographically biased. Not enough sample group. Not validated.

Kind of like saying I walked into the jungle in Africa and saw a silverback gorilla. Therefore everyone that does what I do will also see a silverback gorilla each time they walk into the jungle.

 

[HaulingAss]

Charging at home, use slowest rate possible, even down to 5-6 amps. This keeps the battery from losing capacity. My CT just rolled over to 22,000 miles and less than 1 percent capacity lost over the past year.

You will have significantly higher charging losses if you set to charge at the slowest speed and there is zero evidence that it increases battery longevity. The reason low charge rates don't improve longevity is easy to understand:

The limiting factor as to how fast a battery can charge without causing accelerated degradation is internal heat buildup. That's why we have batteries that are thermally regulated with coolant. However, this heat buildup only comes into play at DC fast charging speeds (over 100 kW) or very warm/hot ambient temperatures. Sure, if it's over 100 degrees outside when you arrive home to charge, maybe turndown the amps or charge at night. But even that is not necessary.

I've only charged my Cybertruck at 250 kW Superchargers (maybe a couple of 150 kW Superchargers) and at home I charge at the full 48 amps that my Wall Connectors can provide.

Guess what? After a year I've only lost less than 0.5% battery capacity. Granted, this is only one datapoint of many. But you seem to hold singular data points and old wives tales in high regard. I doubt I will change your mind, but I thought I would throw that out there because you do a disservice to all the newbies when you claim you can reduce degradation by charging at only 5 or 6 amps. It's simply not true and there is no data to support that. It wastes a lot of energy too by keeping your vehicle from going to sleep (which it will normally do as soon as it finishes charging).

Probably my most confusing observation is this. I have stopped prioritizing 250 chargers over 150 and the black one over 150 as well I can honestly say that a 250 charger does get to 250 sometimes for a brief time, there is little difference in the runout time after passing 50% or so.
Traveling again tomorrow and will try to stopwatch it.
Sort of like the tortoise and the hare!

There is a certain amount of truth to that, but only for people who regularly Supercharge well above 55-60% and who want longer rest breaks. I generally unplug at 55-65% (unless I really need the extra range to get to another 250 kW+ Supercharger) so I benefit significantly from 250 kW Superchargers when I only need a short break. That said, sometimes it's too fast anyway, or I want to charge when I'm still well above 20% (for whatever reason) and I would have been fine at a 150 kW Supercharger, it mostly depends on if I want a break longer than 15-20 minutes.

Bottom line: You can only save about 4-5 minutes at a 250 kW charger but, if you are ready to hit the road, that 5 minutes can feel like a significant amount of time.

 

[MeadowShade]

You will have significantly higher charging losses if you set to charge at the slowest speed and there is zero evidence that it increases battery longevity. The reason low charge rates don't improve longevity is easy to understand:

The limiting factor as to how fast a battery can charge without causing accelerated degradation is internal heat buildup. That's why we have batteries that are thermally regulated with coolant. However, this heat buildup only comes into play at DC fast charging speeds (over 100 kW) or very warm/hot ambient temperatures. Sure, if it's over 100 degrees outside when you arrive home to charge, maybe turndown the amps or charge at night. But even that is not necessary.

I've only charged my Cybertruck at 250 kW Superchargers (maybe a couple of 150 kW Superchargers) and at home I charge at the full 48 amps that my Wall Connectors can provide.

Guess what? After a year I've only lost less than 0.5% battery capacity. Granted, this is only one datapoint of many. But you seem to hold singular data points and old wives tales in high regard. I doubt I will change your mind, but I thought I would throw that out there because you do a disservice to all the newbies when you claim you can reduce degradation by charging at only 5 or 6 amps. It's simply not true and there is no data to support that. It wastes a lot of energy too by keeping your vehicle from going to sleep (which it will normally do as soon as it finishes charging).



There is a certain amount of truth to that, but only for people who regularly Supercharge well above 55-60% and who want longer rest breaks. I generally unplug at 55-65% (unless I really need the extra range to get to another 250 kW+ Supercharger) so I benefit significantly from 250 kW Superchargers when I only need a short break. That said, sometimes it's too fast anyway, or I want to charge when I'm still well above 20% (for whatever reason) and I would have been fine at a 150 kW Supercharger, it mostly depends on if I want a break longer than 15-20 minutes.

Bottom line: You can only save about 4-5 minutes at a 250 kW charger but, if you are ready to hit the road, that 5 minutes can feel like a significant amount of time.

Just my experience, not making claims or encouraging others. Jeez. I guess what I have done and experienced 1st hand after 5 years and 150,000 miles over 4 different Tesla’s is invalid.
I will consider myself censored. No old wives here, just experience not theory of how batteries work.
Where I have traveled, 250 chargers are rare. Oh wait, I can’t say that.

What Facebook Poll? I am not and never have been on Facebook.

Congrats. I am gone. People like you are the very reason I don’t do social media. You are right … always. If others have a different experience, even seeing a gorilla, well, that person is just stooooopid compared to you.

So sorry I just can’t measure up to your raging brillance!

 

[Outdoors]

Just my experience, not making claims or encouraging others. Jeez. I guess what I have done and experienced 1st hand after 5 years and 150,000 miles over 4 different Tesla’s is invalid.
I will consider myself censored. No old wives here, just experience not theory of how batteries work.
Where I have traveled, 250 chargers are rare. Oh wait, I can’t say that.

What Facebook Poll? I am not and never have been on Facebook.

Congrats. I am gone. People like you are the very reason I don’t do social media. You are right … always. If others have a different experience, even seeing a gorilla, well, that person is just stooooopid compared to you.

So sorry I just can’t measure up to your raging brillance!

First off. Congrats on owning 4 Tesla's. It is people like you that have invested both time and dollars into a company that is hopefully doing better for you and the overall mankind thing.

We are peer reviewed here. Some don't like it. Sorry. Yet it is better that way than just everyone posting every thought without anyone conversing or questioning it. It is kind of human nature to question.

I think I am at 605 on chargers, but I think the point is that was kind of deviated from after questioning is the 5-6 amp stuff. Got into chest pumping.

Sure anyone can charge at any rate they choose at home. All some of us are doing is pointing out what may not exactly be something other than your experience, and may not be valid to a larger group.

So please dispense with the I am going away upset. I really don't want that. Nor do others. We are just sharing some again first hand experience with some stats as well. Kind of like you, but maybe a bit different.

Overhead in charging is real. Folks that charge at low amps or very low low amps are less effcient. Look at what was used from grid vs. what went into car. At those rates you might be looking at 15-20% losses. I understand loss. I ran a half a mile of cable from my panels to my battery house from side of mountain. With those distances losses are created. Yet those are different. Try to understand those. Me beat big chest.

Time. If you spend 80+ hours charging a week how do you have 20,000 miles on the truck? If you say I supercharge often. Then the whole premise of your exercise is not valid. Could be a good testament to superchargers however. Please don't tell us the 20,000 miles was on a model Y or something.

Anyway. We share ideas here. They are often criticized. Even mine. Someone said I don't understand electricity once. I said cool. Manage the sun every day, or the lack of.

 

[Crissa]

No one is being censored for being fact-checked. We're all trying to help here.

-Crissa

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