Cybertruck with dead 48v battery = Bring a Trailer

[Keeney]

F150 Lightning to the rescue

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[Gigahorse]

Yea the 48 v runs the brains of the truck, if that goes dead nothing but plugging in for a while is going to get it going.
Still unsure of why some of the 48vs are lead acid and not all LithIon, would solve a lot of the issues, especially this early.

 

[Art138]

Did you get a warning when you reached 5percent or was it sudden?

 

[greggertruck]

This truck was used for a full battery range test, completely depleted to find it's full range.

Context.

 

[Keeney]

This truck was used for a full battery range test, completely depleted to find it's full range.
Context.

Yep, that is included in the tweet.

The more subtle point here is that the 48v battery was dead as well.
Else I would assume they could have just charged the CyberTruck from the Lightning (with the right 240v adapter and mobile Tesla charger) instead of having to load it on a trailer.

 

[CyberGus]

Driving a Tesla until the HV battery shuts off should not deplete the LV battery... ??!?

Regardless, a 9V battery would have solved the 48V issue.

 

[mark555055c]

Nice, so it appears when the main pack dies, the steer by wire doesn't fail immediately and send you off a cliff.....

weird... it's almost like Tesla thought of this in advance, who woulda thunk it.

 

[Keeney]

Curious as to what does the manual say about recharging the 48v battery?
The Out of Spec guys seemed to suggest they had to hotwire the frunk open to get to the battery...

 

[pricedm]

Easy-peasy



https://www.tesla.com/ownersmanual/modely/en_us/GUID-3567D5F4-A5F4-4323-8BE0-023D5438FFC6.html

 

[Keeney]

Yep, that is included in the tweet.

The more subtle point here is that the 48v battery was dead as well.
Else I would assume they could have just charged the CyberTruck from the Lightning (with the right 240v adapter and mobile Tesla charger) instead of having to load it on a trailer.

Reading some more about this, they loaded it on the trailer and brought it to the supercharger because that was going to be faster than waiting around charging it with the generator they had (and then still having to go to the supercharger).

 

[Crissa]

Driving a Tesla until the HV battery shuts off should not deplete the LV battery... ??!?

Regardless, a 9V battery would have solved the 48V issue.

Without the traction battery, all the systems have to run off of the 48v system.

9v battery only gets you into the frunk, I think.

-Crissa

 

[CyberGus]

Without the traction battery, all the systems have to run off of the 48v system.

9v battery only gets you into the frunk, I think.

-Crissa

Someone here quoted the manual, which states that the DC-DC converter shuts down when HV capacity drops to 3%. So the LV battery is running all non-propulsion systems for the last 3%.

Yes, a small battery like a 9v might pop the trunk but can’t provide enough power to jump-start.

 

[FarAway]

Watch this video, he does a great job of showing how to jump a dead CT.

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