Supercharging Fail while using Power Outlets

[LastCyberbeast2024FE]

You are wrong. The other posters are right. AC charging disables the outlets. DC charging does not. A Supercharger won’t impact them.

Not that it’s needed because this is so clearly documented, but one of the original posters linked a video right above to debunk your claim too.

Which is a click bait video as it doesn't show you the truck charging. Its ok, I'll record it and post the video showing the second the truck connects to supercharging, the outlets all automatically turn off, so ya'll can go complain to Tesla about it, and hopefully realize that wishful hoping that outlets have power while supercharging, is just that, wishful hoping.

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[mongo]

If it is a 400V Suoercharger, do the outlets drop out momentarily as the pack transitions from 800V to 400V mode?
That blip could cause issues with certain loads.

Charging with a side of outlets:

I just updated to 2024.14.11 this morning and happened to be on a road trip with an electric cooler plugged into one of the AC outlets. I noticed the cooler was still running while we are supercharging, so it seems they must have silently enabled this recently. Not sure if it was today’s update, but I don’t think this was working on the previous 2024.14.x builds.

Also, for anyone going to the Cybertruck meetup in Gatesville, TX tomorrow, the Abbot superchargers appear to be struggling. Multiple of us only getting 5-10kW charging speeds. :/

 

[LastCyberbeast2024FE]

Here, go argue with Grok.

The Cybertruck's onboard power outlets (including the 120V and 240V options in the cabin and cargo bed) are intentionally disabled by Tesla during Supercharging as a design choice related to the vehicle's power management architecture. This prevents simultaneous high-power DC input from the Supercharger (up to 350 kW for the Cyberbeast) and AC output through the onboard inverters, which could lead to electrical conflicts, overheating risks, or inefficient power routing. During Supercharging, the DC fast-charging bypasses the AC/DC conversion hardware that's needed to generate power for the outlets, effectively placing that system in a standby state to prioritize battery charging.
Key Reasons Based on Tesla's Design
Power Flow Prioritization: Supercharging delivers direct current (DC) straight to the high-voltage battery pack, bypassing the onboard inverters responsible for converting battery power to usable AC for outlets. Enabling outlets simultaneously would require splitting or rerouting power in a way that could compromise charging speed or efficiency.
Safety and Hardware Protection: The system avoids potential overloads on the inverters or ground fault circuit interrupter (GFCI) protections. Tesla's Powershare documentation explicitly states that bed and cabin outlets are disabled when charging via the charge port (including Superchargers), and vice versa—this is a mutual lockout to prevent backfeeding or electrical faults.
Not a Bug, But a Limitation: This behavior applies across all Cybertruck variants, including the Cyberbeast tri-motor model. It's consistent with Tesla's approach to bidirectional power features like Powershare (vehicle-to-home/load), which are restricted during any charging session to ensure stable operation.

 

[mongo]

Here, go argue with Grok.

The Cybertruck's onboard power outlets (including the 120V and 240V options in the cabin and cargo bed) are intentionally disabled by Tesla during Supercharging as a design choice related to the vehicle's power management architecture. This prevents simultaneous high-power DC input from the Supercharger (up to 350 kW for the Cyberbeast) and AC output through the onboard inverters, which could lead to electrical conflicts, overheating risks, or inefficient power routing. During Supercharging, the DC fast-charging bypasses the AC/DC conversion hardware that's needed to generate power for the outlets, effectively placing that system in a standby state to prioritize battery charging.
Key Reasons Based on Tesla's Design
Power Flow Prioritization: Supercharging delivers direct current (DC) straight to the high-voltage battery pack, bypassing the onboard inverters responsible for converting battery power to usable AC for outlets. Enabling outlets simultaneously would require splitting or rerouting power in a way that could compromise charging speed or efficiency.
Safety and Hardware Protection: The system avoids potential overloads on the inverters or ground fault circuit interrupter (GFCI) protections. Tesla's Powershare documentation explicitly states that bed and cabin outlets are disabled when charging via the charge port (including Superchargers), and vice versa—this is a mutual lockout to prevent backfeeding or electrical faults.
Not a Bug, But a Limitation: This behavior applies across all Cybertruck variants, including the Cyberbeast tri-motor model. It's consistent with Tesla's approach to bidirectional power features like Powershare (vehicle-to-home/load), which are restricted during any charging session to ensure stable operation.

Grok is wrong. The AC junction box allows the inverter to output to the outlets while supercharging without conflict.

 

[REM]

LOL, except they don't show you the truck charging. Classic click bait...

bruh. just take the L

 

[CT_AZ_4x4]

Grok is wrong. The AC junction box allows the inverter to output to the outlets while supercharging without conflict.

Mongo is correct.

But AC outlet use was not ALWAYS possible when DC supercharging. There was a software update that enabled it some time ago.

It is true that there is no AC outlet capability whenever the truck is charging off of AC.

Mongo probably knows as much or more about the Cybertruck than the next dozen service center advisors. The dude is an encyclopedia of information!

 

[LastCyberbeast2024FE]

Grok is wrong. The AC junction box allows the inverter to output to the outlets while supercharging without conflict.

If you are so sure, then why does it shut them all off the moment I plug into supercharger? And turns them right back on the moment I unplug?
And i am on update 2025.32.3.1, VIN 38k+

It's not that I doubt your knowledge, but your knowledge is not applying to my truck.

So either the rule is that tesla shuts down all outlets while super charging, and the exception may be that a few trucks here and there somehow have their outlets working while supercharging.

Or the rule is that outlets do work while supercharging and the exception is that there are a few trucks here and there that have outlets being disabled while supercharging.

Either way, Grok and Tesla service centers both are proving me with the same information and they have my truck to prove it with.

 

[mongo]

If you are so sure, then why does it shut them all off the moment I plug into supercharger? And turns them right back on the moment I unplug?
And i am on update 2025.32.3.1, VIN 38k+

It's not that I doubt your knowledge, but your knowledge is not applying to my truck.

So either the rule is that tesla shuts down all outlets while super charging, and the exception may be that a few trucks here and there somehow have their outlets working while supercharging.

Or the rule is that outlets do work while supercharging and the exception is that there are a few trucks here and there that have outlets being disabled while supercharging.

Either way, Grok and Tesla service centers both are proving me with the same information and they have my truck to prove it with.

I get that it's not working on your truck and that service people told you it is expected behavior, but that is not the way it's supposed to be.

Not sure if this applies (I haven't dealt with the outlets while Supercharging personally):
Are you re-enabling the outlets after you park and get out of the truck? Alternatively, do you have "keep outlets on", or "Enable Cabin Outlets on Entry" enabled?

Check the service menu for alerts regarding the PCS, outlets, and ACDC converter.

 

[CT_AZ_4x4]

Mongo is correct.

But AC outlet use was not ALWAYS possible when DC supercharging. There was a software update that enabled it some time ago.

It is true that there is no AC outlet capability whenever the truck is charging off of AC.

Mongo probably knows as much or more about the Cybertruck than the next dozen service center advisors. The dude is an encyclopedia of information!

I have extensively Supercharged while using the AC outlet for running my Starlink and fridge. The software change that allowed this usage was a big deal to me because it meant that I didn’t need to haul my Bluetti battery to keep Starlink and my fridge powered while Supercharging. Starlink while Supercharging is often used as we are all checking social media or email when parked to charge on our roadtrips.

 

[LastCyberbeast2024FE]

I get that it's not working on your truck and that service people told you it is expected behavior, but that is not the way it's supposed to be.

Not sure if this applies (I haven't dealt with the outlets while Supercharging personally):
Are you re-enabling the outlets after you park and get out of the truck? Alternatively, do you have "keep outlets on", or "Enable Cabin Outlets on Entry" enabled?

Check the service menu for alerts regarding the PCS, outlets, and ACDC converter.

Yep, since i was on a 2k mile trip 1 week ago, I have outlets on, outlets on on entry AND outlets permanently on for 12 hours.

And every single time I plugged to charge, my starlink would shutdown, fridge would beep into off mode, scooter and bike would stop charging and all outlet selections inside the menu become grayed out. As soon as I unplug, everything is re-enabled, starlink turns on, fridge beeps on, and scooter and bike continue charging.

I've had the reset outlets message popped up a few times, actually while not using any of the outlets and just entering the car in the morning. I'll say that happens once a week on any regular day, not during road trip. I just press reset and message goes away, and outlets working fine.

 

[mongo]

Yep, since i was on a 2k mile trip 1 week ago, I have outlets on, outlets on on entry AND outlets permanently on for 12 hours.

And every single time I plugged to charge, my starlink would shutdown, fridge would beep into off mode, scooter and bike would stop charging and all outlet selections inside the menu become grayed out. As soon as I unplug, everything is re-enabled, starlink turns on, fridge beeps on, and scooter and bike continue charging.

I've had the reset outlets message popped up a few times, actually while not using any of the outlets and just entering the car in the morning. I'll say that happens once a week on any regular day, not during road trip. I just press reset and message goes away, and outlets working fine.

Something isn't right then. What current do you AC charge at?

 

[TwiztOG43]

Yep, since i was on a 2k mile trip 1 week ago, I have outlets on, outlets on on entry AND outlets permanently on for 12 hours.

And every single time I plugged to charge, my starlink would shutdown, fridge would beep into off mode, scooter and bike would stop charging and all outlet selections inside the menu become grayed out. As soon as I unplug, everything is re-enabled, starlink turns on, fridge beeps on, and scooter and bike continue charging.

I've had the reset outlets message popped up a few times, actually while not using any of the outlets and just entering the car in the morning. I'll say that happens once a week on any regular day, not during road trip. I just press reset and message goes away, and outlets working fine.

I have had this happen until I started to receive a multitude of errors resulting in the PCS being replaced.

But you are wrong. AC outlets are indeed available when DC fast charging. I have 3 dogs that ride in the vault and I have a camera, ecoow wave 2, LED lighting. They do shut off for a second or so, but once the charge rams up the AC outlets become available.

 

[REM]

I have had this happen until I started to receive a multitude of errors resulting in the PCS being replaced.

But you are wrong. AC outlets are indeed available when DC fast charging. I have 3 dogs that ride in the vault and I have a camera, ecoow wave 2, LED lighting. They do shut off for a second or so, but once the charge rams up the AC outlets become available.

Dude has everyone telling him that his PCS has an issue, but he doesn't want to listen lol

 

[mongo]

Dude has everyone telling him that his PCS has an issue, but he doesn't want to listen lol

I think the issue is more that their service center is misinformed and one would expect them to be a knowledgeable authority.

 

[hemiarch]

you are incorrect, I've had an entire discussion/complaint with Tesla service center, as I believe it to be ridiculous you can't use the outlets while charging the truck.

So go argue with them, but the vehicle WILL DISABLE all outlets automatically the moment you connect any charger to the truck.

I just went on a 2k mile trip from San Diego to Idaho and back, supercharged 8 times, and I wanted to charge my Stark Varg on 240v and a scooter on 120v I had on the bed while I was supercharging, and the answer is NO, you can't.

If you disagree as to why you can't, fine by me, I ain't a cybertruck engineer, but regardless as to why, again, the answer is NO, you can't.

I’m genuinely not trying to stir the pot here but I did this very thing just yesterday. Charged my Ecoflow power station while charging the car at the supercharger. I’ll grab you a video when I’m off work. The nice thing is you should be able to see the input displayed on the Ecoflow screen.
I’m not sure why that didn’t work for you. Was the plug maybe tripped by the stark varg or the scooter or both? Did you try check the outlets and mods screen for the reset?

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