Jetson Warren Folding Fat Tire Electric Bike
- Class 2
- 401-600 Wh
- 26-40 mi claimed
- 251-300 lb max load
SVT Score, Lower
A folding 20 x 4 in fat-tire e-bike with a removable 468 Wh battery, five assist levels and IPX5, at 63.3 lb.
$1,500
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Usability
3.7 out of 10- Range: up to 37 miles on pedal assist claimed
Better on batteryHeybike Ranger 3.0 Pro e-bikeThe Ranger 3.0 Pro carries a 720 Wh battery. $1,399Scores 9.0- Sensor: cadence-based pedal assist
Better on ride hardwareRide1Up Portola 02 Lite Folding E-BikeDual-piston hydraulic discs with 180 mm rotors. $895Scores 10.0
- Searched: SGS UL Certipedia Intertek TÜV SÜD CPSC Health Canada
- Record: SGS, UL 2849 (SGS prints no standard; eBikes category), Ebikes (Product name: Jetson Warren All Terrain Folding E-Bike, Grey) WARREN (JWRNFT-GRY), WARREN(JWRNFT-), WARREN, JWRNFT-GRY, TruRide Tech LLC
- Record: UL Product iQ, UL 2849 (QGNS), (none on the public page) - 'JWRNFT' / 'JWRNFT-GRY' return QGNS.E538551, public page omits Warren, TruRide Tech LLC
- Peak: 750 W, labelled peak power in the manual; no rated figure or torque published
Strengths
- Fat tires for sand and gravel
- Battery lifts out to charge
- Five levels of pedal assist
- Stated IPX5 splash rating
- Frame folds for car transport
Drawbacks
- Owners report weak brakes
- Heavy to lift
- No taillight fitted
- Motor rating published only as peak
- Gear count stated two ways
- Only one year on battery and motor
A folding fat-tire bike for mixed ground, but heavy with weak brakes
Specs
- TypeFolding
- E-Bike ClassClass 2
- Battery401-600 Wh
- MotorHub
- Top SpeedUp to 20 mph
- Claimed Range26-40 mi
- Weight56-70 lb
- Max Rider Load251-300 lb
- BrakesMechanical disc
- SuspensionNone
- FoldingFolds
- CertificationsUL 2849 listed
- Warranty1 Year
Not checked: The motor's rated output, which Jetson does not publish
At a glance
- Built-in horn
- Magnets hold the fold
- Tires run at low pressure
A USPTO assignment recorded in May 2024 transferred the JETSON trademark filings to Jetstream Brands LLC of New Castle, Delaware.
- Jetson sells its electric bikes in the US through its own store at ridejetson.com, which ships from US West Coast warehouses to the contiguous US.
- The store's terms and privacy policy name TruRide Tech LLC d/b/a Jetson, PO Box 461, Jersey City, New Jersey, as its operator.
- Its store sells adult e-bikes from compact 14-inch commuters to folding 20-inch cruisers and fat-tire bikes.
- Jetson also runs an official Amazon store, which lists its Bolt and Axle X lines and accessories.
- US big-box retailers carry the range as well.
- Walmart sells only the J5 among Jetson e-bikes as the seller, and none of the eight major US retailers sells the OTG Elite, Shadow, Venture, Universe or Warren as the seller (October 2026).
The Jetson Warren is a folding fat-tire e-bike whose frame folds in half at a latch, with a removable 46.8 V, 10 Ah lithium-ion battery (46.8 V × 10 Ah = 468 Wh; the store page prints 48 V, 10 Ah) and a hub motor that Jetson's manual lists at 750 W peak power, with no rated output or torque published.
It has front and rear disc brakes, 20 x 4 in tires run at 20 psi, front and rear mudguards and a cadence-based pedal sensor; no suspension is published. It weighs 63.3 lb and carries a 300 lb rider limit for ages 14 and older.
Five pedal assist levels run from 8 to 20 mph and the throttle reaches 20 mph, and Jetson claims up to 37 miles on pedal assist and 27 on the throttle. It comes with a high-beam headlight, a horn, an LCD screen, a stated IPX5 rating, a keyed battery lock and magnets that hold the folded wheels together.
The manual lists 7 gears, while the store's spec table prints 21-speed.
Compared in
Questions answered from our data
How much does an electric bike cost?The 326 electric bikes we list run from $750 to $12,500, with a median of $1,800.
Are electric bikes UL certified?105 of the 326 electric bikes we list carry a UL 2849 listing we could look up by model.
How far can an electric bike go?260 of the 326 electric bikes we list claim 41 miles or more on a charge, each on its maker's own basis.
Which electric bikes have a battery over 1,000 Wh?18 of the 326 electric bikes we list have a battery over 1,000 Wh, as their makers rate it.
