Tesla Semi Juices Up From 5 Superchargers At Same Time: Video

DEC 14 2018 BY MARK KANE 20

You have to manage somehow when there are no Megachargers yet.

One of the Tesla enthusiasts spotted a Tesla Semi at the Kettleman City Supercharger in California, where some 40 Supercharging stalls are waiting for travelers.

According to the author of the video, the Semi was connected to 5 Superchargers at once!

naderassemi: “The Tesla Semi making an appearance at the Kettleman City supercharger. Pulling juice from 5 stations at once.”

“UPS depot across the street.”

Tesla Semi normally should use its own network of Tesla Megachargers, but as there are none launched yet, the prototype trucks are connected to Superchargers via special adaptors. It turns out that many Superchargers can feed power to Semi, but it’s still just a base level charge.

Tesla Megachargers are expected to be up to 2 MW power electronic monsters, because it needs to replenish 400 miles (640 km) of range (or 80% of the 500-mile version) in 30 minutes.

Tesla Semi charging port


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The Tesla Semi making an appearance at the Kettleman City supercharger. Pulling juice from 5 stations at once. #stealthmode

Post udostępniony przez Nader Assemi (@naderassemi)

Source: naderassemi

Categories: Charging, Tesla, Trucks

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20 Comments on "Tesla Semi Juices Up From 5 Superchargers At Same Time: Video"

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Elsewhere (in Germany) there’re already EVs (protoypes) with more charging power: https://insideevs.com/fastcharge-porsche-increases-charging-power-450-kw/


That has more power than 5 Superchargers? Methinks your math is just a wee bit off.

But really just a wee bit. Superchargers do put out more than 90kW, but not by a whole lot.

120 kW x 5 = 600 kW – so – not so bad after all!

Ask drivers what they would prefer: Plugging in 2 (x450 = 900kW) or 5 plugs (in this case probably far less than 900kW).
I think the result is clear to everyone here: 1 or even 2 plugs are probably ok. But 5 is much more -> annoying.


Obviously the Tesla Semi Truck was not designed to use Superchargers for charging. Just a glance at the plug port will tell you that. But with no Megachargers yet built (so far as I know), the trucks have to charge up where they can, even if it makes them look like an escapee from a tentacle monster movie! 😉

I think the only thing that can really be taken from this is that we’re still looking at a prototype, but that said, it is proving even the prototype Semi can handle pretty high charge rates – the real question is just how high it will go in the final production version, and with a real megacharger.

And whilst the current solution is (IMO) a pragmatic interim solution for these trials, which at least enables these Semis to go across the country, it would be foolish to draw too many conclusions from it – at the very least I’d expect the final model to indeed only have one or two connections to a megacharger.

What will be really key is whether Musks statement of “80% or 400 miles of range in 30 minutes” is upheld. (And personally, I think the signs are good.) If it is, that destroys a key argument in favour of those arguing in favour of hydrogen, (both “refuelling” time and absolute range) – the only real query then will be battery cost versus fuel cell cost. Next year looks like all will be revealed……..

The reality of things is Tesla should switch to 800v for the Semi or maybe even 1600v. It would allow charging on smaller connectors and lighter gauge wire. Even at 1600 volts you’d still need 1250 amps to hit two megawatts of power. They could charge in series and draw from the packs in parallel to maintain compatibility.

technology limits working voltage to 1000V. PCB – RF4. How do you get around that?

RF4 or FR4? Either way, I built PCB for 80 kV systems. 1000V is plenty doable, especially when there’s lots of room.

1600VDC isn’t low voltage according to the IEC definitions due the risk of Electrical arcing -> https://en.wikipedia.org/wiki/Low_voltage
That makes things much more complicated.

Elsewhere they have or are trying to establish systems like Trolleybusses – not only in the meaning of like always contact but also like quick recharge like at certain bus stops for busses or at certain parts of the interstate during driving.


I just can’t imagine dozens, or even hundreds of these charging all at once. It almost seems like it’ll be beneficial to just build your own power generation plant, supplement it with solar and battery farm to cut down on the power distribution cost. Or site these near a hydroelectric plant, wind or solar farm.

Put them on the other side of the huge wind and solar farms Nikola has to build for their hydrogen semi stations. lol

They will charge while loading in the warehouse.

Not unless it’s a warehouse owned by the trucking fleet operator. Trucking fleets will install Megachargers on their own property, not the customer’s.

Ugly semis previewing an ugly pickup.

Beauty is in the eye of the beholder… and it looks like you need to visit an optometrist. 😉

What a useless video…..

The only info I got from it was there were FOUR superchargers at this location and so the title stating 5 is non-sensical. Assuming all 4 were used (8 dispensers from 4 chargers) – then that is somewhere around 400-480 kw peak until the tapering starts. I’m basing this on this ‘island’ of particular dispensers has only 4 charging bays, and that the other 16 are elsewhere. Why wouldn’t someone taking a pic of this show the connections to the truck?

All we see in this video (besides the 4 chargers for this island) is the WRONG SIDE OF THE TRUCK. Big deal.

Pulling power from 5 at once? Wow! 😯 I had read that the Tesla Semi Truck hooks up to multiple Superchargers simultaneously, but I had no idea it was that many!

Go Tesla!

5 x 120kW is 600kW. For a 300kWh battery, that is only 2C.