Cybertruck to use 48V instead of 12V?

FutureBoy

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Consensus is Tesla will stick to 12V for the Cybertruck
Thing is... Tesla is revolutionary because it doesn't stick with consensus. It might end up at the consensus implementation from time to time if it fits the best implementation based on first principals thinking. But if not, consensus will definitely not be followed.

So any time there is a general consensus found, I tend to dis-believe it. I don't know what Tesla will actually do. But there is a very high chance that it won't be whatever the consensus is.
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FutureBoy

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Should this thread be resurrected?
Apparently it has been. LOL.

I've seen a number of threads resurrected i the last week even though there seemed to be no reason to do so.

Just a bit ironic that you asked about the issue clear back in 2021. Now here we are resurrecting this one.
 

shaneaus

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LOL Consensus! I think the CT will use 48v wiring! It is over of the MASSIVE cost saving measures to keep the price down!

IMHO (and, that of Sandy Monro) - using 48V wiring will have a huge trickle down effect on production costs. So, Tesla would be stupid NOT to use 48V wiring.
 
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slomo

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LOL Consensus! I think the CT will use 48v wiring! It is over of the MASSIVE cost saving measures to keep the price down!

IMHO (and, that of Sandy Monroe) - using 48V wiring will have a huge trickle down effect on production costs. So, Tesla would be stupid NOT to use 48V wiring.
The cost savings are not massive. Tesla will do 48V in the next gen car to use E-Brakes. There is little savings powering most accesories which are principally LEDs. Some saving are offset by a more expensive 48V battery or a step up converter. The reason cars first used 6V was battery cell count.
 

shaneaus

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The cost savings are not massive. Tesla will do 48V in the next gen car to use E-Brakes. There is little savings powering most accesories which are principally LEDs. Some saving are offset by a more expensive 48V battery or a step up converter. The reason cars first used 6V was battery cell count.

18:50 continues through 21:53 and beyond.

Wiring size being smaller equals weight savings. Smaller modules. Smaller wiring harnesses. No need for a 12v battery/conversion to 12v. Weights savings cascade to the requirements for the rest of the vehicle.
 


Bill906

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There is little savings powering most accesories which are principally LEDs.
Power Windows
Power locks
Power seats
Power tilt/telescope steering control. (Wheel/yoke)
Every computer module
HVAC blower(s)
wipers (BAW might be 1000V). :)
Tonneau cover
Power Frunk (?)
Heated seats
ventilated seats
Display screen(s)
Radiator fan(s)
Power steering (Including AP control)
Power brakes (Including AP control)
Rear window defroster (admit, probably not on CT)
Cameras
Radar
Outside audio “Horn” etc.
Inside audio
Electric door release
Power glove box release


Technically LED’s but high power LED’s that will benefit from 48V vs 12V:
Headlights
Fog lights
Light bar

What’d I miss?
 

firsttruck

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Power Windows
Power locks
Power seats
Power tilt/telescope steering control. (Wheel/yoke)
Every computer module
HVAC blower(s)
wipers (BAW might be 1000V). :)
Tonneau cover
Power Frunk (?)
Heated seats
ventilated seats
Display screen(s)
Radiator fan(s)
Power steering (Including AP control)
Power brakes (Including AP control)
Rear window defroster (admit, probably not on CT)
Cameras
Radar
Outside audio “Horn” etc.
Inside audio
Electric door release
Power glove box release


Technically LED’s but high power LED’s that will benefit from 48V vs 12V:
Headlights
Fog lights
Light bar

What’d I miss?
Heat pump
Octo-valve
windshield defrost/deice embedded wire heater

There are probably dozens of small comptroller/microprocessors but maybe the big computers should be listed separately:
MCU console & infotainment computer (AMD)
Autopilot/FSD computer

Might need wires for powered tailgate
Might need wires for optional accessories like winch
 

MiguelAznar

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Power Windows
Power locks
Power seats
Power tilt/telescope steering control. (Wheel/yoke)
Every computer module
HVAC blower(s)
wipers (BAW might be 1000V). :)
Tonneau cover
Power Frunk (?)
Heated seats
ventilated seats
Display screen(s)
Radiator fan(s)
Power steering (Including AP control)
Power brakes (Including AP control)
Rear window defroster (admit, probably not on CT)
Cameras
Radar
Outside audio “Horn” etc.
Inside audio
Electric door release
Power glove box release


Technically LED’s but high power LED’s that will benefit from 48V vs 12V:
Headlights
Fog lights
Light bar

What’d I miss?
But, other than that, what did the Romans ever give us?
 

charliemagpie

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And sense inside the truck ?
 


alan auerbach

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And sense inside the truck ?
How many models of cars and trucks are being made as we speak? (I'd guess over 100.)

What's a primary goal of every maker? (I'd guess cost-cutting in the manufacture.)

How many of those models use a 48v system? (I'd guess NONE.)

If my guesses are reasonably accurate, how would you account for the word in caps?
 

CyberGus

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How many models of cars and trucks are being made as we speak? (I'd guess over 100.)

What's a primary goal of every maker? (I'd guess cost-cutting in the manufacture.)

How many of those models use a 48v system? (I'd guess NONE.)

If my guesses are reasonably accurate, how would you account for the word in caps?
inertia
 

TyPope

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Most manufacturers use a 12V architecture because that's what all their suppliers use. Can you imaging Ford getting all their suppliers to switch to 48V architecture all at once?

Tesla does not have the same constraints as others because they are vertically integrated. If Tesla thinks making the switch will make things better and more efficient, they can just do it.

The CT will be 48V. The wiring can be thinner, motors will change for things like windows and door actuators but since Tesla controls all that, they can change all that.
 

JBee

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All of the semiconductors used for processing, be that MCU/CPU/GPU are all under 3V and typical off the shelf PC hardware is all 12V/5V. There's nothing that is 48V, and running a few hundred watts over 12V is easy and light enough that 48V won't make a difference for it.

The main items will be all the medium power consumption items, like HVAC compressor or accessories like winches etc. But I doubt we will see a 48V window or light, 12v works just fine for that as well.
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