• Welcome to Tesla Roadster Forum! If you're joining us from Cybertruckownersclub.com, then you may already have an account here.

    If you were registered on the Cybertruck forum as of September 18, 2026 or earlier, then you can login here with the same username and password.

    If you wish, you can remove your account here.

Portable generator as "Range Extender"

YDR37

Well-known member
Joined
Dec 29, 2023
Threads
18
Messages
995
Reaction score
507
Location
California
Vehicles
Tacoma
Country flag
Not really surprising that it can be done, but maybe interesting to see someone actually using this approach.

So this guy carries a Predator 9500 generator (9500W, $2,300 at Harbor Freight) in the back of his CT when he goes camping in the snow.

The generator apparently supplies a Tesla connector. He was able to charge at about 11 miles/hr. Took about 14 hours (overnight) to go from 12% to 100%. Burned about 15 gallons of gasoline.

So it can be done, but there are some obvious downsides. You can’t charge while driving, so you’ll probably want to charge overnight. But that’s probably also when you'll want to sleep, and then the generator is noisy.
 
Last edited:

Jedi2155

Well-known member
Joined
Apr 13, 2020
Threads
2
Messages
126
Reaction score
58
Location
Southern California
Vehicles
2024 Model Y AWD | FS Cybertruck AWD + FUSC
Occupation
Engineer
Country flag
Saw that, 15 mpg isn't horrible for a vehicle of this size.
 
OP
OP

YDR37

Well-known member
Joined
Dec 29, 2023
Threads
18
Messages
995
Reaction score
507
Location
California
Vehicles
Tacoma
Country flag
Also note that Predator 9500 is rated for 7600W continuous, or just about 31A@240V.
And also, a stock Predator 9500 only has a 6.6 gallon fuel tank. So if he burned through 15 gallons overnight, seems like he must have gotten up during the night to refuel. Or else he paid extra for an additional fuel tank and some sort of extended run time kit.
 

cybercricket

Well-known member
Joined
Oct 31, 2024
Threads
10
Messages
576
Reaction score
389
Location
Oregon
Vehicles
Cybertruck
Country flag
And also, a stock Predator 9500 only has a 6.6 gallon fuel tank. So if he burned through 15 gallons overnight, seems like he must have gotten up during the night to refuel. Or else he paid extra for an additional fuel tank and some sort of extended run time kit.
I am also wondering... would it be possible to attach a hose to divert the exhaust form the generator under the vehicle to use waste heat for keeping the battery warmish ?
 

NotMyTruck

Well-known member
Joined
Oct 4, 2024
Threads
11
Messages
135
Reaction score
110
Location
Mid Atlantic
Vehicles
none
Country flag
That’s like buying a portable nuclear reactor, then attaching it to a back pressure turbine and saying you power your house off the grid.
 

Crissa

Well-known member
First Name
Crissa
Joined
Jul 8, 2020
Threads
133
Messages
17,100
Reaction score
11,179
Location
Santa Cruz
Vehicles
2014 Zero S, 2013 Mazda 3
Country flag
I am also wondering... would it be possible to attach a hose to divert the exhaust form the generator under the vehicle to use waste heat for keeping the battery warmish ?
Sounds like something my spouse would do.

-Crissa
 
OP
OP

YDR37

Well-known member
Joined
Dec 29, 2023
Threads
18
Messages
995
Reaction score
507
Location
California
Vehicles
Tacoma
Country flag
That’s like buying a portable nuclear reactor, then attaching it to a back pressure turbine and saying you power your house off the grid.
I've been meaning to get one of those portable nuclear reactors from Harbor Freight
 
Last edited:

bosshog

Well-known member
First Name
roardog
Joined
Dec 7, 2024
Threads
2
Messages
327
Reaction score
123
Location
canada
Vehicles
Cyber truck , Maserati ,Mercedes
Country flag
lol I was always thinking about a portable generator for camping as lots of drain of battery when camping as well .
Kettle lights etc
 

yippie

Banned
Well-known member
Banned
Joined
Jul 25, 2024
Threads
0
Messages
212
Reaction score
204
Location
MA
Vehicles
Cybertruck
Country flag
Not really surprising that it can be done, but maybe interesting to see someone actually using this approach.

So this guy carries a Predator 9500 generator (9500W, $2,300 at Harbor Freight) in the back of his CT when he goes camping in the snow.

The generator apparently supplies a Tesla connector. He was able to charge at about 11 miles/hr. Took about 14 hours (overnight) to go from 12% to 100%. Burned about 15 gallons of gasoline.

So it can be done, but there are some obvious downsides. You can’t charge while driving, so you’ll probably want to charge overnight. But that’s probably also when you'll want to sleep, and then the generator is noisy.
we got idiots trading their trucks for a new truck after 1 year or less, so I'm not suprised that people do this foolishness either
 

bosshog

Well-known member
First Name
roardog
Joined
Dec 7, 2024
Threads
2
Messages
327
Reaction score
123
Location
canada
Vehicles
Cyber truck , Maserati ,Mercedes
Country flag
Maybe instead of gas use a propane generator .As the propane can be used for other camping activities .

I don’t think it’s that foolish . Camping in wild places and off road to get there can use a lot more power than expected …
 

yippie

Banned
Well-known member
Banned
Joined
Jul 25, 2024
Threads
0
Messages
212
Reaction score
204
Location
MA
Vehicles
Cybertruck
Country flag
Why so angry ? :)
because stuff like this just makes us look like even bigger idiots. "Hey did you see that guy why carries a gas generator with him so he can charge his truck" because no one ever reads past the headline or reports the situation truthfully.
 

yippie

Banned
Well-known member
Banned
Joined
Jul 25, 2024
Threads
0
Messages
212
Reaction score
204
Location
MA
Vehicles
Cybertruck
Country flag
Maybe instead of gas use a propane generator .As the propane can be used for other camping activities .

I don’t think it’s that foolish . Camping in wild places and off road to get there can use a lot more power than expected …
Then maybe an electric truck isn't for you ... bringing your gas generator with you to charge your truck when your camping IS foolish.
 
 
Top