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Qualisports Dolphin Electric Bike

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Qualisports Dolphin Electric Bike

Feel the rush of an e-bike

Introducing Qualibike’s Dolphin: a powerful, long-range, and foldable electric bike. The Dolphin features a 14Ah Samsung battery, hidden in the seat post battery system, which is long lasting, efficient, and encased with full battery-cell protection sleeve. This e-bike will allow you to ride more than 50 miles with the pedal assist mode and 30 miles range on the throttle mode in a single charge. Its rear mounted 350W brushless geared motor has been recently re-engineered, in order to achieve a more powerful and efficient motor that will endure a longer lifespan.

The Dolphin electric bike folds to a compact size to easily fit in a car trunk or under a desk. It can conveniently fold down into 32.6 x18.9 x 27.5inch, which means it can be easily stored in tight out of the way places in your home, under your work desk, or on public transport. Additionally, weighing only 23kg, the Dolphin is a fantastic portable e-bike for urban commuters or students looking for a faster and more cost-efficient way of getting around.

Check out the Dolphin in action!

Product Specifications

  • Product name: Dolphin
  • Model name: QSEB 03
  • Size:62.9*23.3*44.1inch
  • Folding Size: 32.6*18.9*27.5inch
  • Wheelbase:43.5inch
  • Net weight: 50lbs
  • Range: 62.5Miles(PAS)
  • load: 300lbs
  • Charging time: 6~7 Hrs
  • Battery type: Samsung Lithium-ion
  • Battery capacity: 36V 14Ah
  • Noise : ≤ 62 dB(A)
  • Motor: MXUS Brushless geared DC motor
  • Rated output power: 350W
  • Motor efficiency: ≥85%
  • Rated RPM: 310±10r/min
  • Rated voltage: 48V
  • Max torque: 40N.m
  • Overcurrent protection: 15±1A
  • Low-voltage protection: 30±1V
  • Modes: 5 levels

Additional Specifications

  • Tire diameter: 20x2.35 Inch
  • Frame: 20 inch 6061 Al-Alloy Foldable
  • Front fork: 20 inch 6061 Al-Alloy
  • Brakes: 160mm disc brakes
  • Rim: 20 inch Al-Alloy 12G36H
  • Tire: 35"
  • Chain wheel: Prowheel 52T
  • Free wheel: Shimano 14-28T
  • Derailleur: Shimano 7 speed
  • Chain: KMC
  • Handle bar: Promax
  • Display: Kunteng LCD
  • Controller: Kunteng sine wave FOC
  • Brake levers: Al-Alloy e-bike lever
  • Saddle: KNUS
  • Pedal: Foldable Pedals

Refunds & Return Policy

  • If, at any point during the first 30 days after you receive your product, you feel that the bike does not match how it was described to you on our website or through any communications with us, please contact us and we can discuss a possible return.
  • 10% cancellation fee after 48 hours + any restocking fee's issued by Qualisports after shipment. 
  • Any return must be made in its original packaging and without any damage to the product.


  • Our warranty covers manufacturing and material defects, and does not cover normal wear and tear, damage/failure due to an accident, incidental or consequential damage, or any use of the product that's inconsistent with the operating instructions as laid out in our user manual.
  • All series products components and all electronics are warrantied for 1 year.
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