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Addmotor Citytan M-315 750W vs Viribus ST1 FoldingCitytan M-315 750W vs ST1 Folding

Both checked Sep 2026 against manufacturer pages
+ Add a third model
AddmotorAddmotor
Citytan M-315 750W
Model page Where to buy Remove Addmotor Citytan M-315 750W
ViribusViribus
ST1 Folding
Model page Where to buy Remove Viribus ST1 Folding
Key differences

What actually differs

Same 750W motor, both fold.
Folded size
Viribus folds smaller
Addmotor
46.9 cu ft
Viribus
25.9 cu ft
41.3 × 43.3 × 45.3″ vs 38.2 × 28.7 × 40.9″
Total load
Viribus carries 190 lb more
Addmotor
310 lb
Viribus
500 lb
Rider plus cargo.
Battery
Viribus has 16% more
Addmotor
~648 Wh
Viribus
~749 Wh
Addmotor figure calculated from 48V × 13.5Ah. Viribus figure calculated from 48V × 15.6Ah.
Verdict

Which one for you

  • Smallest storage space
    Viribus ST1 Folding
    Folds about 21 cu ft smaller.
  • Longest rides
    Viribus ST1 Folding
    Larger battery. Both range claims are the brand's, not tested.
Full specs

Side by side

SpecAddmotor Citytan M-315 750WViribus ST1 Folding
Fit
Step-over height
14.1″
Not published by brand
Rider height
5′1″–5′9″
5′0″–6′3″
Seat height
28.7" (min) - 34.6" (max)
Not published by brand
Total load
310 lb
500 lbBetter
Seats
1 rider
Not published by brand
Motor
Rated power
750W
750W
Peak power
1,400W
1,300W
Torque
Not published by brand
85 Nm
Battery
Capacity
~648 Wh
~749 WhBetter
Voltage and amp-hours
48V · 13.5Ah
48V · 15.6Ah
Range and speed
Claimed range
50 Miles
Throttle range 50 miles; pedal assist range 75 milesBetter
Top speed
20 mph
20 mph
E-bike class
Not published by brand
Class 2 (not stated by brand)
Size and folding
Folds
Yes
Yes
Folded size
41.3 × 43.3 × 45.3″
38.2 × 28.7 × 40.9″Better
Weight
Not published by brand
106 lb
Wheels
20" X 3.0"
20"
Brakes and drivetrain
Brakes
Mechanical Disc Brakes On Each Wheel
Triple 180mm hydraulic disc brakes (one per wheel)
Parking brake
Yes
Yes
Gears
Shimano 7-Speed
7-Speed Shimano Derailleur
Rear differential
Yes
Yes
Reverse
No
Yes
Comfort and safety
Suspension
ADDSHOX Oil Spring Suspension Fork (front); feature tab: 80mm of travel
Front fork and seatpost
List price
Price
$1,499
$1,399Better

"Better" marks the stronger figure where one clearly exists. Range and battery claims are the brand's own. "~" means we calculated it. "—" means we haven't checked it yet. Sources and any conflicting figures are on each model page.