Vivi MT20UL Portable Electric Bike 20" x3.0 Fat Tire Foldable E-Bike with 48V 499.2WH…
- Electric Bicycle
- 20 inches
- Electric Bike
- Rear
- Better rated than 73%
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How it ranks among the 478 electric bicycles we track
4.8★ across 8 Amazon ratings, Bayesian-smoothed toward the category average.
8 Amazon ratings, weighted on a log scale so huge counts don't drown everything.
Brand identity, imagery, description and spec coverage.
The ProductDome score is separate from the Amazon rating shown above: it combines the Bayesian-smoothed Amazon rating with evidence volume, tracked demand, and data quality across the 478 electric bicycles we track - how the scorecard works · full electric bicycles data report. Confidence: limited - limited rating history.Last refreshed Jun 21, 2026. Data-computed, not a hands-on test. Compiled by the ProductDome Research Team.
Overview
A foldable electric bike with 20x3.0 fat tires, a detachable 48V 499.2Wh battery and a 750W peak motor, certified to UL2849 safety standards.
Vivi pairs dual disc brakes with a front suspension fork and lists a range up to 50 miles in pedal-assist mode. The seat height and handlebar both adjust, and the frame folds down for trunk storage.
- 20x3.0 inch all-terrain fat tires
- 48V 499.2Wh detachable battery
- 750W peak motor, UL2849 certified
- Up to 50 miles range in pedal-assist mode
Who it's for
Suits adults and seniors wanting a comfortable, foldable commuter or recreational ebike, including riders with arthritis who benefit from the cruise control feature one reviewer mentioned. Less suited to riders chasing high top speed, since this model tops out at 20 mph.
What buyers say
From Amazon customer reviews.
Reviewers highlighted durability after roughly two years of regular use, responsive customer service when an issue came up, and a cruise feature that riders with arthritic hands found helpful, though one buyer noted the acceleration takes some adjustment.
Strengths and trade-offs
Drawn from this product's published specifications.
- Adjustable seat and handlebar suit different riders
- Folds for trunk storage or camping trips
- Cruise control eases use for riders with hand arthritis
- Top speed capped at 20 mph
- Quick acceleration takes some getting used to
Performance notes
The 500W motor (900W peak) combines with the detachable 48V 10.4Ah battery for 22-25 miles in pure electric mode or up to 50 miles with pedal assist, recharging in 4-6 hours. Dual disc brakes and the front suspension fork are meant to keep handling controlled on pavement and light off-road use.
Specifications
| Brand | Vivi |
|---|---|
| Dimensions & fit | |
| Wheel Size | 20 inches |
| Capacity & performance | |
| Number Of Speeds | 7 |
| Age Range Description | Adult |
| Construction & materials | |
| Frame Material Type | Aluminum |
| Color | DL-WHITE |
| Other details | |
| Bike Type | Electric Bike |
| Suspension Type | Rear |
| Additional Features | LCD-Display |
Other Vivi electric bicycles
How it compares
This product against the closest alternatives we track in electric bicycles.
| Product | Amazon rating | Ratings | ProductDome score |
|---|---|---|---|
| Vivi MT20UL Portable Electric Bike 20" x3.0 Fat Tire Foldable E-Bike with 48V 499.2WH…This product | 4.8 / 5 | 8 | 2.7 / 5 |
| Wooken Electric Bike for Adults with 500W MotorWooken | 4.4 / 5 | 312 | 4.1 / 5 |
| TotGuard Electric BikeTotGuard | 4.4 / 5 | 286 | 4.1 / 5 |
| ANCHEER 14" Folding Electric Bike for TeensAncheer | 4.2 / 5 | 329 | 4.0 / 5 |
| Gotrax 16" Folding Electric BikeBrand | 4.4 / 5 | 555 | 4.0 / 5 |
Similar electric bicycles from other brands
Questions about the Vivi electric bicycles
Common buyer questions answered straight from the product spec data - no fluff, no "it depends".
How far can the Vivi MT20UL travel on a charge?
Up to 22-25 miles in pure electric mode or 44-50 miles with pedal assist, per the listing.
Is this ebike foldable?
Yes, it folds down for storage in a car trunk or small space.
Is it safety certified?
Yes, it carries UL2849 certification (SGSNA/24/SZ/00183).