Tamobyke TB20 Moped-Style Fat-Tire Electric Bike
The Tamobyke TB20 electric bike is a moped-style fat-tire e-bike built for riders who want a large battery, full suspension, and connected access features. Its 1,500W motor, 48V 25Ah removable battery, long bench-style seat, and compact 20-inch wheels give it a heavier, more substantial riding feel than a conventional bicycle.
Hydraulic disc brakes, full suspension, and wide anti-puncture tires support riding across paved streets, gravel roads, and other suitable mixed surfaces. NFC unlocking and app connectivity provide additional ways to access and monitor the bike.
Manufacturer-listed speed and range figures are based on specific test conditions and are not guaranteed during everyday riding. Actual results depend on rider and cargo weight, speed, pedal-assist level, throttle use, hills, surface conditions, wind, temperature, tire pressure, battery condition, and maintenance.
The listed top speed may exceed common US e-bike class limits. Check state and local requirements covering assisted speed, motor output, road access, bike lanes, trails, registration, licensing, insurance, and private-property use before riding.
Key Specifications
| Feature | Specification |
|---|---|
| Motor | 1,500W motor |
| Torque | Up to 80 Nm |
| Top Speed | Manufacturer-listed speed of up to 35 mph |
| Battery | Removable 48V 25Ah battery |
| Pedal-Assist Range | Manufacturer-listed maximum of up to 124 miles |
| Throttle Range | Manufacturer-listed maximum of up to 62 miles |
| Charger | 54.6V 3A |
| Charging Time | Approximately 7 to 8 hours |
| Pedal Assist | Five assistance levels with a cadence sensor |
| Suspension | Full-suspension system |
| Tires | 20 × 4-inch anti-puncture fat tires |
| Brakes | Front and rear hydraulic disc brakes |
| Drivetrain | Shimano 7-speed |
| Display | Detachable digital LCD display |
| Smart Features | App support and NFC locking and unlocking |
| Throttle | Twist throttle |
| Frame | Carbon-steel frame |
| Rims | Magnesium-alloy rims |
| Water Resistance | IPX5 |
| Bike Weight | Approximately 100 lb with the battery |
| Payload Capacity | 330 lb |
| Recommended Rider Height | Approximately 5’5″ to 6’5″ |
Motor and Performance
The 1,500W motor delivers up to 80 Nm of torque. It provides support for acceleration, hills, and mixed-surface riding while carrying the additional weight of the moped-style frame and large battery.
Tamobyke lists a maximum speed of up to 35 mph. Actual speed depends on battery charge, rider weight, terrain, tire pressure, wind, and riding conditions.
The bike’s weight and acceleration require more care than a lightweight commuter e-bike. New riders should become familiar with the throttle, brakes, steering, and low-speed balance in a controlled area before riding near traffic or at higher speeds.
Battery and Range
The removable 48V 25Ah battery provides 1,200Wh of listed capacity. It can be removed for indoor charging or charged while installed on the bike.
Tamobyke lists:
- Up to 124 miles in pedal-assist use
- Up to 62 miles in electric or throttle-powered use
These are manufacturer-listed maximums rather than typical guaranteed distances. Higher speeds, frequent acceleration, heavy throttle use, hills, cold temperatures, added cargo, low tire pressure, and a heavier rider can reduce range substantially.
The 124-mile figure is best treated as a low-assistance test result for comparison with other models, not as an expected distance for every ride.
Charging
The TB20 is supplied with a 54.6V 3A charger, and Tamobyke lists an approximate charging time of 7 to 8 hours.
Charging time may vary with the remaining battery level, temperature, battery age, and charging environment. Use the supplied charger in a dry, ventilated location and inspect the battery, charging port, cables, and charger housing before use.
Do not charge a battery that is swollen, cracked, leaking, water-damaged, unusually hot, or producing an unfamiliar odor.
Full Suspension
The full-suspension system helps reduce vibration and impacts from rough pavement, gravel, and uneven surfaces.
Suspension can improve comfort and control, but it does not make the TB20 suitable for every off-road trail, jump, or technical route. Riding speed and tire pressure should be adjusted for the surface and conditions.
Fat Tires and Handling
The 20 × 4-inch anti-puncture fat tires provide a broad contact area for added grip and stability on paved roads and suitable mixed surfaces.
The compact wheels, long seat, and approximately 100 lb bike weight create a different feel from a standard bicycle. Steering may feel heavier, especially at low speeds or when carrying additional weight.
Allow extra space for turning, braking, parking, and maneuvering the bike in confined areas.
Hydraulic Brakes
Front and rear hydraulic disc brakes provide controlled braking for the bike’s weight and listed speed.
Stopping distance still varies with speed, surface conditions, tire grip, rider weight, brake adjustment, and weather. Brake pads and rotors should be inspected regularly, particularly when the bike is used at higher speeds or on hills.
Drivetrain and Pedal Assistance
A Shimano 7-speed drivetrain provides gearing for climbing, cruising, and pedal-assisted riding.
The cadence sensor activates motor assistance when it detects crank movement. Five assistance levels allow the rider to adjust how much support the motor provides.
Because cadence-based assistance may continue briefly after pedaling begins or stops, riders should become familiar with its response before riding in crowded areas.
NFC and App Connectivity
The TB20 supports smartphone app functions and NFC locking and unlocking. Tamobyke states that the NFC feature can still be used to unlock the bike when the connected phone has no battery power.
App features may depend on the current application version, phone compatibility, permissions, Bluetooth availability, and manufacturer support.
Electronic access controls can add convenience, but they do not replace a strong physical lock or secure storage.
Display and Controls
The detachable digital LCD display shows riding information such as speed, battery status, trip data, and system information.
The bike also includes a twist throttle and five pedal-assist levels. Riders should review the control layout and display instructions before the first ride.
Avoid changing advanced settings unless the adjustment is supported by the manufacturer and permitted under state and local regulations.
Size and Weight
The TB20 weighs approximately 100 lb with the battery and supports a listed maximum payload of 330 lb. Payload includes the rider and anything carried on the bike.
Tamobyke’s size guide lists a recommended rider height of approximately 5’5″ to 6’5″. The product summary shows a slightly narrower range, so riders near either end should review the bike dimensions carefully.
The bench-style seat does not provide the same fit adjustment as a conventional bicycle saddle. Rider leg length, reach, and preferred seating position should be considered alongside overall height.
Its weight should also be considered when planning:
- Stair access
- Indoor storage
- Vehicle transport
- Maintenance
- Bike-rack compatibility
- Low-speed maneuvering
Any vehicle rack used with the TB20 must be rated for the bike’s full weight.
Recommended Use
The Tamobyke TB20 may suit:
- Riders who prefer a moped-style seating position
- Longer recreational rides
- Daily trips where a large battery is useful
- Paved roads and suitable mixed surfaces
- Riders who want full suspension and fat tires
- Buyers interested in NFC access and app functions
- Riders comfortable handling a heavy e-bike
It may be less practical for buyers who need a lightweight commuter, frequent stair carrying, compact storage, or the pedaling position of a conventional bicycle.
Before You Order
Review the selected color, current specifications, package contents, rider fit, bike weight, and local riding laws before placing your order.
For questions about the selected configuration, fit, shipping, or current specifications, contact America E Bikes before completing the purchase.
Frequently Asked Questions
Is the Tamobyke TB20 designed for long-distance riding?
Its 48V 25Ah battery provides a large listed energy capacity, and Tamobyke advertises up to 124 miles of pedal-assist range under its test conditions.
That figure should not be treated as a typical guaranteed distance. Real-world range varies with speed, assistance level, throttle use, terrain, rider weight, cargo, temperature, wind, and tire pressure.
What is the throttle-only range?
Tamobyke lists up to 62 miles in electric or throttle-powered use.
Actual throttle range may be lower when riding at higher speeds, climbing hills, accelerating frequently, carrying added weight, or riding in cold weather.
What is the riding position like?
The TB20 uses a long moped-style seat with compact 20-inch wheels. The seating position feels different from a conventional bicycle with an adjustable saddle.
Review the dimensions and recommended rider-height range carefully, particularly if you are near the lower or upper end of the listed fit range.
Is the TB20 legal at 35 mph?
A maximum assisted speed of 35 mph may exceed standard Class 1, Class 2, or Class 3 e-bike limits in many locations.
Legal use depends on state and local rules, speed settings, motor output, required equipment, and the type of road, bike lane, park, or trail. Higher-speed use may be restricted to private property or approved areas.
How long does the battery take to charge?
Tamobyke lists a charging time of approximately 7 to 8 hours with the supplied 54.6V 3A charger.
Charging time can change with the battery’s starting level, temperature, age, and condition.
Can the battery be removed?
Yes. The official product information lists the battery as removable, allowing it to be charged separately from the bike.
Confirm that the battery is locked securely into position before riding.
Does the TB20 use a torque sensor?
No. The official specification lists a cadence sensor.
A cadence sensor detects crank movement and activates assistance based on the selected support level rather than directly measuring how hard the rider presses the pedals.
How much does the Tamobyke TB20 weigh?
The listed net weight is approximately 100 lb with the battery.
Consider this weight before purchasing if the bike will need to be lifted, carried upstairs, loaded into a vehicle, or placed on a transport rack.
What maintenance does the TB20 require?
Check the tire pressure, hydraulic brakes, brake pads, rotors, chain, drivetrain, fasteners, suspension, electrical connectors, and battery condition regularly.
Tamobyke recommends inspecting the brakes, tires, chain, and battery condition monthly. Arrange professional service when components are worn, damaged, loose, or not working correctly.
Do the NFC and app features prevent theft?
No. They can provide access control and connected functions, but they cannot physically prevent the bike from being taken.
Use a high-quality lock and secure storage in addition to the electronic features.
Reviews
There are no reviews yet.