Rad Power Bikes RadWagon 4 Electric Cargo Bike – 750W, 48V 14Ah, 20 MPH
Versatile Low-Step Cargo E-Bike with 350 lb Payload Capacity and Long-Range Battery
The Rad Power Bikes RadWagon 4 is a versatile electric cargo bike designed to combine everyday practicality with comfortable, reliable performance. Built for families, commuters, errands, and hauling gear, it provides a substantial cargo platform while maintaining a stable and approachable riding design.
Powered by a 750W geared hub motor and a 48V 14Ah lithium-ion battery with Samsung cells, the RadWagon 4 offers a claimed range of up to 45 miles per charge and a top speed of 20 mph using pedal assist or the throttle.
Its low-step 6061 aluminum cargo frame makes mounting and dismounting easier, while the adjustable seat post and handlebars accommodate riders from 5’1″ to 6’4″. Wide 22 x 3-inch puncture-resistant tires, mechanical disc brakes with 180mm rotors, and a 350 lb total payload capacity make it a practical platform for carrying passengers, groceries, equipment, and other everyday cargo.
Key Features
750W Geared Hub Motor
The RadWagon 4 features a 750W geared hub motor designed to provide dependable assistance for commuting, errands, and loaded cargo riding.
48V 14Ah Samsung-Cell Battery
A 48V 14Ah lithium-ion battery provides 672Wh of energy capacity. The battery uses Samsung cells and supports a claimed range of up to 45 miles per charge.
Up to 45-Mile Range
The bike offers a claimed maximum range of 45 miles, with actual range varying according to rider weight, cargo load, terrain, riding conditions, and level of pedal assistance.
20 MPH Top Speed
The RadWagon 4 reaches a claimed top speed of 20 mph using either pedal assist or its twist throttle.
5 Pedal-Assist Levels + Twist Throttle
Five levels of pedal assistance allow riders to adjust the amount of electric support, while the twist throttle provides additional control when desired.
Low-Step Cargo Frame
The 6061 aluminum low-step frame provides easier mounting and dismounting while supporting the bike’s cargo-oriented design.
350 lb Total Payload
The RadWagon 4 has a stated 350 lb maximum payload capacity, including both the rider and cargo.
22 x 3-Inch Puncture-Resistant Tires
Custom 22 x 3-inch tires provide a broad contact area for stability while incorporating puncture-resistant construction.
Mechanical Disc Brakes
Mechanical disc brakes with 180mm rotors provide controlled stopping performance for everyday riding and cargo use.
7-Speed Shimano Drivetrain
The seven-speed Shimano drivetrain provides multiple gearing options for different riding conditions and load levels.
Adjustable Rider Fit
The seat post and handlebars are designed to accommodate riders between 5’1″ and 6’4″, providing a flexible fit for different body sizes.
Specifications
Motor & Performance
| Specification | Details |
|---|---|
| Motor Type | Geared Hub Motor |
| Motor Power | 750W |
| Top Speed | Up to 20 mph |
| Pedal Assist | 5 Levels |
| Throttle | Twist Throttle |
| Drive System | Electric Rear Hub |
Battery & Range
| Specification | Details |
|---|---|
| Battery Type | Lithium-Ion |
| Battery Voltage | 48V |
| Battery Capacity | 14Ah |
| Energy Capacity | 672Wh |
| Battery Cells | Samsung |
| Claimed Range | Up to 45 miles per charge* |
Brakes, Tires & Drivetrain
| Specification | Details |
|---|---|
| Brake Type | Mechanical Disc |
| Rotor Size | 180mm |
| Tire Size | 22 x 3 inches |
| Tire Construction | Puncture-Resistant |
| Drivetrain | 7-Speed Shimano |
Frame & Capacity
| Specification | Details |
|---|---|
| Frame Material | 6061 Aluminum |
| Frame Design | Low-Step Cargo Frame |
| Payload Capacity | 350 lbs |
| Bike Weight | Approximately 76.7 lbs |
| Recommended Rider Height | 5’1″ – 6’4″ |
Included Equipment & Accessories
- Integrated Rear Rack
- Front Light
- Rear Light
- Kickstand
- Fenders
- Twist Throttle
- Adjustable Seat Post
- Adjustable Handlebars
Cargo & Utility Design
Integrated Rear Rack
The integrated rear rack provides a dedicated platform for carrying compatible cargo and accessories, making the RadWagon 4 suitable for errands and everyday transportation.
Stable Cargo Platform
The low-step cargo frame and wide tires are designed to provide a stable riding platform, including when carrying a substantial load within the stated payload capacity.
Everyday Convenience
Fenders, integrated lighting, and a kickstand add practical functionality for commuting and daily errands.
Ideal Applications
The RadWagon 4 is well suited for:
- Family transportation
- School drop-offs
- Grocery shopping
- Daily commuting
- Urban transportation
- Carrying recreational equipment
- Hauling everyday cargo
- Errands and local trips
- Replacing some short car trips
- General cargo-bike use
Rider & Cargo Safety
- Always wear a properly fitted helmet and appropriate protective equipment.
- Never exceed the 350 lb total payload capacity, including rider and cargo.
- Secure all cargo before riding and distribute weight evenly.
- Inspect the brakes, tires, wheels, drivetrain, and battery connections before each ride.
- Use additional caution when riding with a heavy or unevenly distributed load.
- Allow additional stopping distance when carrying heavier cargo.
- Use the integrated lights in low-light conditions.
- Follow all applicable local regulations governing electric bicycles and throttle-assisted riding.
Performance & Range Note
The stated 45-mile maximum range and 20 mph top speed are manufacturer-provided specifications. Actual range and performance can vary based on rider weight, cargo weight, terrain, weather, tire pressure, riding style, assist level, battery condition, and other factors.
Why Choose the RadWagon 4?
The Rad Power Bikes RadWagon 4 combines a 750W geared hub motor, 48V 14Ah Samsung-cell battery, 672Wh capacity, 20 mph top speed, 45-mile claimed range, seven-speed Shimano drivetrain, mechanical disc brakes, and 22 x 3-inch puncture-resistant tires in a purpose-built cargo-bike platform. With its low-step aluminum frame, 350 lb payload capacity, integrated rear rack, lights, fenders, and adjustable rider fit, it is designed for practical everyday transportation and cargo hauling.











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