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So, inquiring minds would like to know. Just checked out their web site. As it happens, I'm a EE. And, just like an English teacher cringes when people use bad grammar, EE's cringe when people use energy terms incorrectly. And, so, Lectron's web site has Issues.Just received my unit today from Lectron. I’ll have to take it for a trial run when my SOC is lower, unfortunately I charged last night and am around 87% at the moment.
I actually don't think it's being sold by a company that knows too much about it. I'm fairly certain the adapter is the same one that's being sold by about 4 chinese companies that all slap their own brand sticker on it.So, inquiring minds would like to know. Just checked out their web site. As it happens, I'm a EE. And, just like an English teacher cringes when people use bad grammar, EE's cringe when people use energy terms incorrectly. And, so, Lectron's web site has Issues.
Let's be clear: Energy is measured in lots of different kinds of units. Joules. Watt-hours. Kilowatt-hours. Electron-Volts. And so on.
Next: rate of usage. If one is using One Joule Each And Every Second, than the Rate of Usage is 1 Watt. In fact, it's a definition: 1 Watt = 1 Joule/second. That 100W lightbulb in the overhead? That's 100 Joules per Second.
So, you show up at a V3 Supercharger: They tell you it can do 250 kW. That's 250,000 Joules per Second. That's how many Joules it's stuffing into one's battery each and every second, at least, until the Battery Management System slows down the charge rate to keep from damaging the battery at higher States of Charge.
The battery capacity, if it was being measured in SI units, would be measured in Joules. But, for various strange reasons, power companies like to charge for electricity in kW-hours. So, if you got ten 100W lightbulbs lit for one hour, you'll have used a kW-hr's worth of energy and will be charged by ye electric company accordingly. For what it's worth, there's 3.6MJ in a kW-hr. (Kind of like there's 64 pints in a gallon.)
So, when some marketing genius over at Lectron says the fateful words,
"FAST CHARGING - Up to 70-80 kWh charging rate supported for Tesla Model S/X and up to 50 kWh supported for Tesla Model 3/Y"
Yeah.. kWh is energy. "Charging Rate" is measured in Watts, or kiloWatts. So that bit of advertising blurby foolishness means Nothing.
Now, if they said something like, "70 kWh achieved in an hour!", then we'd know that it could accept a 70 kW rate of charge.
So, on this box you got: What is the maximum charging rate the adapter supports?
There's a reason I ask, beyond insulting marketing types. Remember that V3 Supercharger I mentioned? That charges at 250 kW, DC? That cable on the Supercharger is liquid cooled. That's because when one has something other than a superconductor, there's resistance in the conductor. Longer the cable, resistance scales proportionally. Losses (as in heat) in the cable go as current*current*Resistance, or I-squared-R losses. I think that the DC voltage in most Teslas is around 600V; at 250 kW, the current would be 250e3/600 = 416A. Um. That's a lotta amps. Say there's ten milliohms in the cable; then, power dissipated in the cable would be 416*416*10e-3 = 1.9 kW. That's 19 100W lightbulbs; that'd keep one warm on a cold winter's night. To keep the cable and the connector at the end of the cable from Catching On Fire, Tesla removes that heat with liquid cooling. (And, if one looks at the available pictures of what the inside of a Supercharge stall looks like, one will notice big, thick bus bars. Less resistance, natch.)
Now, let's get nasty. I play with connectors from time to time. Connectors (and this should be no surprise) tend to have more resistance than a straight length of cable. So, when a Supercharger cools the cable, yup, it cools the cable - but I'll bet a plugged nickel that it cools the connector plugged into the car as well, and probably has more cooling concentrated around that handle than one might otherwise expect.
So, here's an adapter. Connector at one end. Connector at the other end. No cooling inbetween. Um. Just how much power is being dissipated in that thing?
My suspicion: One might walk up to a, say, 100 kW CCS charger. But the adapter is going to have firmware that saves the adapter from Catching On Fire, and, instead of getting 100 kW, one might get 50 kW. Or 20 kW. Or maybe even 10 kW. The advertising on that Lectron web page is not just some minor error. That adapter is being sold by a company that durn well knows the difference between energy and rate-of-use-of-energy and I strongly suspect they're being obtuse on purpose. "70 kWh" might just mean, "You can charge your car to its full capacity if you wait 8 hours for our piddly little connector to leak energy into your car at a very slow rate. We're not telling you the rate."
Buyer beware.
I am an EE and the son of an English teacher, so I get both of them.As it happens, I'm a EE. And, just like an English teacher cringes when people use bad grammar, EE's cringe when people use energy terms incorrectly.
...but this is kind of ridiculous paranoia. Lectron doesn't make that thing. It's made by Setec. And the writers who are putting together the descriptions to post for the website listings are not the engineers who design it, who actually WOULD know that terminology difference better. It's just sloppy, but bad writing does not necessarily tie to bad design.The advertising on that Lectron web page is not just some minor error. That adapter is being sold by a company that durn well knows the difference between energy and rate-of-use-of-energy and I strongly suspect they're being obtuse on purpose. "70 kWh" might just mean, "You can charge your car to its full capacity if you wait 8 hours for our piddly little connector to leak energy into your car at a very slow rate. We're not telling you the rate."
Buyer beware.
Yeah, there's a phrase: "Never accuse somebody of maliciousness when there's a possibility that the issue is stupidity." Or something like that.I am an EE and the son of an English teacher, so I get both of them.
...but this is kind of ridiculous paranoia. Lectron doesn't make that thing. It's made by Setec. And the writers who are putting together the descriptions to post for the website listings are not the engineers who design it, who actually WOULD know that terminology difference better. It's just sloppy, but bad writing does not necessarily tie to bad design.
That would be very unlikely though. The very sensible explanation is just that the technical people are not the people writing the ad copy.I don't think this is stupidity. I really think that they know that this thing doesn't have a decent charging rate and they're not willing to admit to the fact.
That would be interesting if it was... I'm checking with my Korean buddy to see if the order he placed for me has shipped yet... He placed a second order (after the first one was cancelled because it was during the "limited pre sale" for SR owners only) on October 25th, as of October 31st the order had not yet shown as shipped, but also hadn't been cancelled...Anyone else clicking the Tesla charging website several times a day to see if their CCS adapter is available? Read somewhere that it may be available this week....
I'm an EE, child of an English teacher and also married to an English teacher!I am an EE and the son of an English teacher, so I get both of them.
...but this is kind of ridiculous paranoia. Lectron doesn't make that thing. It's made by Setec. And the writers who are putting together the descriptions to post for the website listings are not the engineers who design it, who actually WOULD know that terminology difference better. It's just sloppy, but bad writing does not necessarily tie to bad design.
Yeah, brain fart. 8 pints in a gallon, sorry. I was thinking cups, but that's wrong, too.
Still no adapter though. Checking constantly.
Read the article for some answers:Very interested if the SK version now works with the software rollout... granted if it's showing up in software the NA spec is likely to follow soon, possibly within a couple months.
The adapter you bought is made by Setec. There's a thread on the Setec adapter:I bought the Lectron-Tesla CCS adapter, but it doesn't work. They require you to download a software update that is written for antique computers and won't work on Windows 10, even after turning off Norton 360. Lectron's support is some lady out front who doesn't know anything. They will not talk to me on the phone or give written support. (I can't understand Chinese anyway)