V4 Supercharger (325kW enabled) - 15% to 80% Test

[henchman24]

What passenger vehicle(s) besides the cybertruck will be able to take advantage of the v4 speeds?

Any 800v class vehicle will. Not all will maximize it, but even Kia/Hyundai will charge a lot better on V4s. Lucid, Porsche, Audi E-Tron GT, Lotus, GM pickups and Escalade EV... this is just the start though. The move to higher voltage is really just at the beginning.

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[ActiveArch]

Telsa needs more data from the fleet in order to turn up the juice to full potential. Half a million watts is no joke lol. They need to be absolutely sure all components can handle it before turning it on for thousands of people.

This makes sense in theory to me, but wouldn't the necessary testing for that already have taken place? They’re developing these batteries and hardware with very carefully laid out specifications, why would they need to field test thousands of vehicles before allowing the hardware to function as it’s been designed? I’m assuming the answer is better safe than sorry and they don’t have the capabilities to test thousands at a time, but I still feel like there should be someway of ensuring the hardware functions as its designed.

 

[henchman24]

This makes sense in theory to me, but wouldn't the necessary testing for that already have taken place? They’re developing these batteries and hardware with very carefully laid out specifications, why would they need to field test thousands of vehicles before allowing the hardware to function as it’s been designed? I’m assuming the answer is better safe than sorry and they don’t have the capabilities to test thousands at a time, but I still feel like there should be someway of ensuring the hardware functions as its designed.

For better or worse (IMO more better than worse), Tesla adjusts well after the fact… for years even. Just look at the Model 3 charge curve over the years. This is following the same path.

 

[REM]

This makes sense in theory to me, but wouldn't the necessary testing for that already have taken place? They’re developing these batteries and hardware with very carefully laid out specifications, why would they need to field test thousands of vehicles before allowing the hardware to function as it’s been designed? I’m assuming the answer is better safe than sorry and they don’t have the capabilities to test thousands at a time, but I still feel like there should be someway of ensuring the hardware functions as its designed.

They definitely do very rigorous testing, but you just can't always match up theory with the real world on the first try. That's why automotive startups are historically bloodbaths lol. The fleet accounts for scenarios that the Engineers couldn't practically test.

Remember when people started placing wet rags across the charging handle of SuperChargers during super hot days so they could throw off the temperature sensor data? That's a really good example of the extremes you have to go through to account for the unexpected. And those edge cases always show up in the wild, because... well ... humans. lol

 

[Woodrick]

Any 800v class vehicle will. Not all will maximize it, but even Kia/Hyundai will charge a lot better on V4s. Lucid, Porsche, Audi E-Tron GT, Lotus, GM pickups and Escalade EV... this is just the start though. The move to higher voltage is really just at the beginning.

I don't believe that this is correct.

The V4, AFAIK, is still a 400V charger.

 

[mongo]

I don't believe that this is correct.

The V4, AFAIK, is still a 400V charger.

Yeah, Cybertruck charges at 800+ Amps in 400V mode on the V4 posts with V3 Cabinets.

V4+V4 will be 800V.

 

[Woodrick]

Yeah, Cybertruck charges at 800+ Amps in 400V mode on the V4 posts with V3 Cabinets.

V4+V4 will be 800V.

References? Last I heard they just increased the soft coded current limits to what the new inverters can support.
800V at 325kW would suggest that they dramatically lowered the current.

 

[henchman24]

I don't believe that this is correct.

The V4, AFAIK, is still a 400V charger.

These are V4 posts with V3 cabinets. The V4 cabinets (that are not installed yet) are 1000v. Any 800v vehicle will utilize the V4 capabilities.

 

[mongo]

References? Last I heard they just increased the soft coded current limits to what the new inverters can support.
800V at 325kW would suggest that they dramatically lowered the current.

?
Current Superchargers are still 400V. The new cabinets will do 800+V.

These are V4 posts with V3 cabinets. The V4 cabinets (that are not installed yet) are 1000v.

Right, and deoending with document you read that's either a V4 system or 3.5 .

 

[Woodrick]

These are V4 posts with V3 cabinets. The V4 cabinets (that are not installed yet) are 1000v. Any 800v vehicle will utilize the V4 capabilities.

Then why are all V4 pedestals capable now?

 

[mongo]

Then why are all V4 pedestals capable now?

Capable of what? They are still running in 400V mode.

 

[Woodrick]

Capable of what? They are still running in 400V mode.

Of 325 kW charging.

Tesla announces all V4 Superchargers can now charge up to 325kW in North America | Electrek

 

[mongo]

Of 325 kW charging.

Tesla announces all V4 Superchargers can now charge up to 325kW in North America | Electrek

Right, it's doing 400V @ 800A, with V4 cabinet it would (likely) be 800V @ 400A.

 

[Woodrick]

Right, it's doing 400V @ 800A, with V4 cabinet it would (likely) be 800V @ 400A.

No, you can't have it both ways.

And again, can you provide any source to 800V being used? All I've seen is speculation.

 

[henchman24]

Then why are all V4 pedestals capable now?

The V4 cable can withstand >700 amps (about what the V3s tap out at). From there the amperage limit is unknown why the limit at 875 appears… could be truck, could be V3 cabinet/bus bars, could be V4 cable. Still TBD. My bet is something in the truck, but not 100%.

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