ECOTRIC BIKES UL Certified-Ecotric 20″ White Portable and Folding Fat Bike Model Dolphin

Foldable Power That Fits Your Life

Experience effortless adventure with the UL Certified Ecotric Dolphin—a foldable fat bike that combines playful agility with robust performance. Its 20-inch chubby tires and clever folding design deliver unmatched portability and shock absorption, making every ride smooth and spontaneous. Embrace the perfect blend of power and convenience, designed for those who demand premium quality in every journey.

Restaurant-grade performance — sear at 1,000°F+ with infrared burners
304 stainless steel construction — rust-resistant, built to last decades
Ships fully assembled — wheel it out, fire it up same day
10-year warranty standard — industry-leading coverage on all burners

$939.99

Out of stock

Placeholder
ECOTRIC BIKES UL Certified-Ecotric 20″ White Portable and Folding Fat Bike Model Dolphin
$939.99

Foldable Power That Fits Your Life

This UL-certified folding fat bike is a vetted addition to any garage. The 500W motor and 20-inch fat tires handle snow, sand, and pavement with equal confidence, while the foldable frame and removable battery make storage effortless. We curated this model for riders who want serious range—up to 48 miles in pedal assist—without sacrificing portability. It's an investment in daily mobility that earns its place every time you unfold it.

FREE SHIPPING30-DAY RETURNSEXPERT SUPPORTFREE SHIPPING30-DAY RETURNSEXPERT SUPPORTFREE SHIPPING30-DAY RETURNSEXPERT SUPPORTFREE SHIPPING30-DAY RETURNSEXPERT SUPPORTFREE SHIPPING30-DAY RETURNSEXPERT SUPPORTFREE SHIPPING30-DAY RETURNSEXPERT SUPPORT
UL Certified Safety
500W Geared Motor
Foldable Frame
Removable Battery
500W
Rear Hub Motor
45-48 mi
Pedal Assist Range
12.5AH
Lithium Battery

Fits Your Space

The Dolphin folds at the upper tube and handlebar, making it adaptable to compact storage situations most full-size e-bikes can't manage.

  • 20×4.0 fat tires fit standard fat bike racks and carriers
  • Removable 36V battery charges at any standard household outlet
  • Foldable frame stores in car trunks, closets, or RV compartments

Built For

From daily commutes to weekend trail rides, the Dolphin handles terrain that stops standard e-bikes cold.

Pavement Commuting
Snow & Sand Riding
RV & Camper Travel
Apartment Storage

Full specifications

At a glance

Compliance
UL Certified
Full specifications19 data points across 4 categories

Dimensions

Tire20" * 4.0 Anti-skidding,adapt to snow, sand and other complex topography
Inner tube20×4.0/4.9
Valve stemAmerican standard size

Power & Performance

MotorRear Hub 36V 500W
Battery36V 12.5AH
Charging Time6-8 Hours
DisplayEcotric M3 LCD display
SensorSpeed Sensor
Battery Life400-600 Cycles
FunctionsPedal Assist On-Demand Throttle
Speed25KM/H (According to the laws of the United States, we set the maximum speed at 25km/h, which can be adjusted according to the specific conditions of each state.)

Materials

FrameAluminum Alloy
Front BrakeMechanical Disc 160mm Rotor
Rear BrakeMechanical Disc 160mm Rotor
Derailleur7Speed SHIMANO
Tires20×4.0' Fat Tires
FendersIncluded, Front And Rear
Brake SystemLeft Brake For Rear/Right Brake For Front

Compliance & Warranty

CertificationUL Certified

The Volt Trek Promise

Every product on Volt Trek earns its spot. If the Dolphin doesn't meet your expectations, we make it right.

Free ShippingShips free to your door — no hidden freight charges.
30-Day ReturnsInvest once — if it's not right, send it back on us.
Expert ConsultationTalk to a real e-bike expert before you buy — phone, chat, or email.

Experience Unmatched Versatility with the ECOTRIC BIKES UL Certified Dolphin 20″ Folding Fat Tire E-Bike

Discover the perfect fusion of playful design and serious performance with the ECOTRIC BIKES UL Certified Dolphin 20″ Folding Fat Bike. Inspired by the dolphin’s chubby yet agile form, this portable e-bike combines a powerful 500W motor with robust 20″ x 4.0″ fat tires, offering exceptional shock absorption and stability on any terrain. Whether you’re navigating snowy paths, sandy beaches, or city streets, the Dolphin delivers a smooth, long-lasting ride. Its foldable frame and removable battery make it the ultimate companion for commuters, adventurers, and anyone seeking a premium, space-saving electric bike. Elevate your ride with UL certified safety and unmatched convenience.

Key Features

  • 500W Brushless Geared Motor: Enjoy reliable, high-torque performance from a rear hub motor designed for efficiency and power.
  • 20″ x 4.0″ Anti-Skid Fat Tires: Conquer snow, sand, gravel, and complex topography with superior traction and stability. Inner tube size: 20×4.0/4.9. Equipped with an American standard valve stem and valve cap.
  • 36V 12.5AH Removable Lithium Battery: Travel up to 18-23 miles in pure electric mode or 45-48 miles in pedal-assist mode. Charge at home or the office in approximately 6-8 hours. Battery life spans 400-600 cycles, featuring both battery and power lock functions for security.
  • Upgraded M3 LCD Display with Headlight Switch: The C-NDOL20LED-WB model features an enhanced M3 meter that integrates a headlight switch function for improved visibility and control.
  • Dual Disc Brake System: Mechanical disc brakes with 160mm rotors (front and rear) work in conjunction with an outage braking system for secure, responsive stopping power.
  • 7-Speed Shimano Drivetrain: Seamlessly shift gears with a reliable 7-speed system, offering pedal assist and walk assist modes for effortless riding.
  • Foldable Aluminum Alloy Frame: The lightweight, durable 20″ alloy frame folds compactly for easy storage in your trunk, elevator, or subway. Frame specifications include a 50*50*120L head tube and heterotypic pipe 27.4*2.2T*420L.
  • UL Certified for Safety & Longevity: With over 125 years of industry leadership, UL certification ensures rigorous safety standards, quality assurance, and peace of mind for insurance and daily use.

Specifications

MODEL SIZE 1780 x 620 x 1120 mm
WEIGHT CAPACITY 200 lbs
WEIGHT WITH BATTERY 55 lbs
BATTERY 36V 12.5AH
MOTOR Rear Hub 36V 500W
CHARGING TIME 6-8 Hours
DISPLAY Ecotric M3 LCD Display
SENSOR Speed Sensor
BATTERY LIFE 400-600 Cycles
FUNCTIONS Pedal Assist & On-Demand Throttle
SPEED 25 km/h (Adjustable per state regulations)
FRONT BRAKE Mechanical Disc 160mm Rotor
REAR BRAKE Mechanical Disc 160mm Rotor
DERAILLEUR 7-Speed SHIMANO
FRAME Aluminum Alloy
TIRES 20 x 4.0″ Fat Tires
FENDERS Included, Front and Rear
BRAKE SYSTEM Left Brake for Rear / Right Brake for Front

Why Choose ECOTRIC BIKES UL Certified-Ecotric 20″ White Portable and Folding Fat Bike Model Dolphin

Choosing the ECOTRIC BIKES Dolphin means investing in a ride that prioritizes safety, portability, and performance without compromise. Our UL certification—a hallmark of electrical product safety for over 125 years—demonstrates our unwavering commitment to your security and the longevity of your e-bike. This certification not only ensures rigorous testing but also provides essential peace of mind for insurance purposes. The Dolphin’s foldable design and removable battery redefine convenience, allowing you to store it effortlessly and charge anywhere. With its powerful 500W motor, extended 45-48 mile pedal-assist range, and fat tires that glide over any surface, this e-bike is built for the modern explorer. From daily commutes to weekend adventures, the ECOTRIC Dolphin delivers a premium, reliable, and enjoyable riding experience that stands apart.

Packing List

  • 1 x UL Certified Ecotric 20″ White Portable and Folding Fat Bike Model Dolphin
  • 1 x Lithium-Ion Battery
  • 1 x Kit Box
  • 2 x Pedals
  • 1 x Display
  • 2 x Keys
  • 1 x Tool Kit
  • 2 x Reflectors
  • 1 x Owner’s User Manual

Reviews

There are no reviews yet.

Be the first to review “ECOTRIC BIKES UL Certified-Ecotric 20″ White Portable and Folding Fat Bike Model Dolphin”

Your email address will not be published. Required fields are marked *

About ecotric bikes Electric Bikes

ecotric bikes is a trusted manufacturer of premium electric bikes. VoltTrek is an authorized dealer offering the full ecotric bikes lineup with free delivery, price match guarantee, and expert support.

View all ecotric bikes products →

Related Categories

Join the Grill Island Community

Expert Picks, Straight to Your Inbox

No spam. Just the gear worth knowing about.

No spam. Unsubscribe anytime.