Harvester Gas-Powered Range Extender for Cybertruck

[Hunky Dory]

This is 170 lbs and can produce 7000 max running watts which could provide full power to the onboard charger. Obviously a purpose built fixed generator could be lighter and quieter than this, but it gives you an idea of the cost. Double or triple for detailing for sound and vibration mitigation. Delete the wheels, handle plugs, dedicate shipping etc. The tank would be remote to further reduce the volume. In a 10 hour driving day this could supplement 200 miles of range.

Tesla won't do it, but some EE just needs to hack the charger, computer, wiring harness and thermal management loop.

A very solid option. I'm doing something very similar for some trips with a dual fuel generator. Great way to achieve semi hybrid operation with any pickup type EV. It is removable so you don't have t haul it around all of the time.

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[Tinker71]

A very solid option. I'm doing something very similar for some trips with a dual fuel generator. Great way to achieve semi hybrid operation with any pickup type EV. It is removable so you don't have t haul it around all of the time.

Do share. On the CT I was envisioning a intake/exhaust board that the tonneau could interface with. You would hardly see it at all.

 

[Hunky Dory]

Do share. On the CT I was envisioning a intake/exhaust board that the tonneau could interface with. You would hardly see it at all.

I do not charge while underway so I just open the tonneau while parked. I am using a Duromax 4850 currently and I am modifying the ground neutral bonding on my 7500 watt Champion generator so I can use it in the near future.

 

[Tinker71]

Onblard charger can do 48A, 11.5kW. The mobile connector is limited to 32A, 7.7kA.
Pairing a 12kW generator to a Wall Connector would give the maximum charge rate.

That would work but the connector won't let the vehicle move and I don't want to have a plug draped over the side of the truck. I believe that safety is hard circuitry. It would need to be tricked somehow. You should be able to bypass the connector and wall charger all together.

 

[mongo]

That would work but the connector won't let the vehicle move and I don't want to have a plug draped over the side of the truck. I believe that safety is hard circuitry. It would need to be tricked somehow. You should be able to bypass the connector and wall charger all together.

Ok... then you would still be working with the 11.5kW onboard charger. Wall and mobile connectors are just smart GFCI switches.

 

[Woodrick]

No, the EPA numbers assume a speed of 50mph, and haven't been updated in decades.


But they're not small. And can be 'bricked' just like any other if the low voltage system fails.

-Crissa

You may want to do a little homework. EPA numbers are not 50 mph and they have been updated many times, even this year.

 

[MeadowShade]

So, if you have a 7kw generator, which is more than I can lift up into the bed, that give you about what a wall charger give you, right?

If it is an inverter, then the power should be clean enough but does it have to go through a mobile charger?

Is there such a thing as a DC charger? Wouldn't that be a better option? I think arc welders are DC output?

FS

 

[mongo]

So, if you have a 7kw generator, which is more than I can lift up into the bed, that give you about what a wall charger give you, right?

Wall Connector does up to 12.5kW, mobile connector is 7.6kW (charger is part of the truck)

If it is an inverter, then the power should be clean enough but does it have to go through a mobile charger?

Power waveform may not be super clean. Mechanical AC output might work better with the power factor correction (PFC) front end.
It doesn't "need" to go through a mobile connector, if you control the software. Normal operation does require a connector to communicate with.

Is there such a thing as a DC charger? Wouldn't that be a better option? I think arc welders are DC output?

Home fast DC chargers aren't a big industry.
Welders are high current near zero voltage (basicallya short circuit). For 10kW a Cybertruck needs roughly 25 amps at 400V or 12.5A at 800V

 

[Crissa]

So, if you have a 7kw generator, which is more than I can lift up into the bed, that give you about what a wall charger give you, right?

If it is an inverter, then the power should be clean enough but does it have to go through a mobile charger?

Is there such a thing as a DC charger? Wouldn't that be a better option? I think arc welders are DC output?

FS

Great point.

Yes, you wouldn't use a Wall Connector or Mobile Connector because that connects to the onboard charger. The onboard charger is used by the vehicle to provide onboard 240v power, and only works from the side inlet.

There are such things as chargers because the onboard charger is one. So you would also need your own charging circuitry to take the power from the generator to put it into the traction battery.

Then you could run the generator while the truck is in motion. And the truck would get very confused why the battery never completely discharges, but mostly wouldn't care. A few others have done this.

But you also have to futz around with 400v/800v circuitry.

-Crissa

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