SMARTRAVEL DK400 Electric Bike 1000W
- Maximum Weight Recommendation: 330 pounds
- Wheel Size: 20 inches
- Size: 20 Inches
- Lithium Battery Energy Content: 720 Wh
Last refreshed Jun 21, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A capable fat-tire e-bike on paper, with real ride quality reported by several buyers, but recurring reports of motor faults and unresponsive customer service after the first few months of ownership.
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ASIN: B0BNMBSJHZModel: DK400Category: Electric Bicycles
Overview
The SMARTRAVEL DK400 is a 1000W peak motor electric bike with a removable 48V/15Ah battery, 20x4.0 fat tires and Shimano 7-speed gearing, built for commuting or off-road riding at speeds up to 28+ MPH.
The bike arrives 85 percent pre-assembled, needing only the front wheel, fender, kickstand, handlebars and pedals attached before its first ride, and it is UL2849 certified for battery safety.
- 1000W peak motor, up to 28+ MPH
- 26+ mile range electric-only, 45+ miles with pedal assist
- 20x4.0 fat tires with front and rear suspension
- UL2849 certified battery
Who it's for
Works for riders who want a fat-tire commuter or trail e-bike at a mid-range price and are comfortable troubleshooting minor assembly issues themselves.
Pros and cons
- Removable 48V/15Ah battery for easy charging
- Dual mechanical disc brakes with motor cutoff
- Front and rear suspension smooths rough terrain
- Arrives 85% pre-assembled
- Multiple reports of motor failing after several months
- Customer service described as hard to reach
- Top speed fell short of claims for heavier riders
- Some assembly fit issues, like misaligned rack holes
Specifications
| Brand | Smartravel |
|---|---|
| Model | DK400 |
| Dimensions & fit | |
| Maximum Weight Recommendation | 330 pounds |
| Wheel Size | 20 inches |
| Size | 20 Incheslower than 55% of 98 electric bicycles |
| Wheel Width | 4 inches |
| Capacity & performance | |
| Number Of Speeds | 7 |
| Bicycle Drivetrain Type | Hub Drive |
| Bicycle Gear Shifter Type | Trigger |
| Age Range Description | Adult |
| Power & efficiency | |
| Lithium Battery Energy Content | 720 Wh |
| Wattage | 720 wattslower than 66% of 197 electric bicycles |
| Power Source | Rechargeable Battery |
| Construction & materials | |
| Frame Material Type | Carbon Steel |
| Wheel Material | Carbon Steel |
| Color | Black |
| Warranty & support | |
| Warranty Description | 2 years |
| Warranty Type | Limited |
| Other details | |
| Electric Assist Type | Throttle and Pedal Assist |
| Brake Style | Disc |
| Suspension Type | Dual |
| Is Assembly Required | Yes |
| Model Year | 2024 |
Closest rivals on specs
Frequently asked questions
How far can the SMARTRAVEL DK400 go on a charge?
The listing states 26+ miles in pure electric mode and 45+ miles in pedal-assist mode, though actual range depends on rider weight and terrain.
Does the DK400 arrive fully assembled?
It ships about 85 percent assembled, with the front wheel, fender, kickstand, handlebars and pedals left for the buyer to attach.