Does Tesla throttle the superchargers?

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Charging speeds are also dependent on a number of other factors, like your current state of charge and if your battery is at optimal temperature to support the fastest speed.

How is the weather? I've noticed here in the UK I'm not getting above 120-130kW due to the cold weather, even with pre-conditioning of my battery, it seems like the actual infrastructure is impacted by the cold weather

You should check your service panel out. my car charges about that speed, turns out it's because the 5-way coolant actuator is stripped and it cannot send coolant into the battery. It ran a nifty diagnostic on itself (ChatGPT told me how to get to it after I gave it the error code from the service screen) and told me that the sensor indicated the actuator was freely spinning, which mean that it was stripped.

You must pre condition by navigating to SC in the navigation and I’ve found for at least 30 min away from charger. Battery must be warmed to about 50°C. Fastest charge rates happen with SoC from 8-50%. V3 (250KW) and V4 supercharger stalls do not share power. Every stall has maximum power ability. It does not matter how many other cars are at a station.

No. You just don’t understand how charging and your battery works

Yes. If the charging cable gets too hot

learn about your car before you complain about it

A few factors could affect the speed. If you are in a cold climate did you precondition the battery prior to arriving at the charger? What percentage was your battery at when you were getting the 74kw? The charging slows as the battery gets fuller. And yes there are bad chargers from time to time. If you pre conditioned and are at a low battery level you should be getting faster charging. I switch chargers if I find that.

Has nothing to do with this

It’s cold

What did this comment do to assist OP in better understanding the car or the charger…. if someone can’t ask a genuine question in the tesla sub without someone being rude where can they go really?

I doubt there is any management to throttle chargers. I can’t imagine what the motivation would be either. You’re either showing up with a cold battery, or in cold weather, or at a high SoC. Or were you sharing stalls with those other cars, or staggered as much as possible?

They do share power, but not like the old V2.5 with a hard split of a common shared 144kW-ish. Instead it’s a bus across at least 4 (3 in very cold climate areas) stalls. Not clear if the clusters of 4(3) are also tied together to an extent. But the kW amount available on the bus is very high, so rare to have the timing occur with 4 vehicle connected and collective draw potential in the moment hit it.

You have to precondition the battery (set navigation to a supercharger) and if you are a seasoned owner you know the charging curve is horrible for teslas

Impossible to say without more info. If your car was at a low state of charge and fully preconditioned, and you weren't sharing an electrical cabinet with other cars, then yes, 100% you should be getting way higher charge rates. But if any of those aren't true, especially if more than one, you'll get lower charge rates.

It’s not just a question. It’s a very misinformed rant and complaint. Guy could have saved a thread by just googling the answer in 3 seconds. It’s really not that complicated

idk maybe they wanted to connect with fellow tesla owners to better understand the situation in a way google can’t….

Say it with me “Charge rate is in kW, total energy charged is in kWh. Charge rate is in kW, total energy charged is in kWh. Charge rate is in kW, total energy charged is in kWh”

I was just thinking the same fkn thing. Everyone in the comments is going to say it’s “because it’s cold” but I don’t believe it.

I’ve had those kinds of speeds happen twice in the last few years (both with a preconditioned car and in uncrowded chargers). Both time I just moved to a different stall and got normal speeds so it seemed limited to that particular unit.

What’s your battery temp when you get to charger? I can see my temp via third party app. During supercharging it can go high as 110F or even higher. Unless you preheat to at least 90F or something 74kwh is expected.

Pretty sure google provides a much better and comprehensive answer than literally any response here. Stop being a clown.

But doesn’t resistance go down with cooler weather and therefore increasing current? I did precondition on my way there, but idk if it fully heated up.

Yes I know the charging curve is crud, but I’ve never seen it consistently this low before. Might be the very cold weather here in the northeast.

Same issue in NH but I usually home charge because it takes forever to precondition

100% no. Optimal temp for fastest DC charging is ~45-50 Celsius. You’re charging slow because it’s cold and your battery is cold.

Coming from another EV that can do 10-80% (and doesn't drop peak rate until near 80%) in 24 minutes, slowing charge rate at 50% is a disappointing charge curve. On 350KW stations I was consistently getting \~215 until 80%.

There is a limit. I was charging near Joshua Tree at a 16 stall and it was full. Only ever got to 110kWh from basically empty.

Funny thing. For awhile I used to charge at ChargePoint, and it would always send me a text message with how much I used, and abbreviate it as 5.37 kwhs. Like a good hands free guy, I had the Tesla read the text message to me, and the car read it as “five point three seven kilowatts hour” (instead of kilowatt-hours). I always got a good laugh that my electric car didn’t know how to say the units it used to drive. So be careful who you tell ”say it with me”.