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Qualisports DOLPHIN Foldable Electric Bike (PRE-ORDER) - QSEB03

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Original price $1,499.00
Original price $1,499.00 - Original price $1,499.00
Original price $1,499.00
Current price $1,399.00
$1,399.00 - $1,399.00
Current price $1,399.00

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Qualisports folding structure makes the folding size only 830*480*700mm, weighs only 50lbs.

 It can easily fit in the back of an SUV, in the trunk of a car, RV and easily folds for ease of transportation.

The Dolphin features a 14Ah Samsung battery, hidden in our patented seat post battery system that lasts longer, is more efficient, and encased with a full battery-cell protection sleeve. This e-bike will allow Qualibikers to ride between 50-60 miles of utilizing the PAS (Pedal Assist) mode and 30 miles range on the throttle mode in a single charge.

The intergraded customized BMS system protects the battery from overcharging, overheating, stabilizes, and regulates the current output.

The Re-programmed FOC controller offers Quali-bikers a more enjoyable and comfortable riding experience. 

This is accomplished by the integration of our components mentioned above to provide a smoother fluid motor engagement.

We also intergraded a multi-function LCD display on board together with a 12 dots Cadence Sensor to help the riding experience more enjoyable. The LCD panel has the following visual indicators on it.  5 levels of PAS (Pedals Assist levels - 5 levels), battery level indicator, timer, speed, distance, average speed, trip distance, trip timer, ODO, max speed, battery voltage indicator, Lamp on/off, backlights, walking mode and cruise control mode.

The rear-mounted 350W brushless geared motor has been re-engineered from inside and out.  New material was utilized in the gears producing a stronger magnetic field is applied inside the motor which achieves a more powerful and efficient motor that will endure a longer lifespan.


  • Product name: Dolphin
  • Motor: MXUS Brushless geared DC motor
  • Brakes: 160mm disc brakes
  • Model name: QSEB 03
  • Rated output power: 350W
  • Rim: 20 inch Al-Alloy 12G36H
  • Size:62.9*23.3*44.1inch
  • Motor efficiency: ≥85% Tire: 20x2.35"
  • Folding Size: 32.6*18.9*27.5inch
  • Rated RPM: 310±10r/min
  • Chain wheel: Prowheel 52T
  • Wheelbase:43.5inch
  • Rated voltage: 48V
  • Free wheel: Shimano 14-28T
  • Net weight: 50lbs Max torque: 40N.m
  • Derailleur: Shimano 7 speed
  • Range: 62.5Miles(PAS)
  • Overcurrent protection: 15±1A Chain: KMC
  • Max. load: 300lbs Low-voltage protection: 30±1V
  • Handle bar: Promax
  • Max. speed: 20MPH Kwh: ≤1.2Kw.h
  • Display: Kunteng LCD
  • Charging time: 6~7 Hrs
  • Modes: 5 levels
  • Controller: Kunteng sine wave FOC
  • Battery type: Samsung Lithium-ion
  • Tire diameter: 20x2.35 Inch
  • Brake levers: Al-Alloy e-bike lever
  • Battery capacity: 36V 14Ah
  • Frame: 20 inch 6061 Al-Alloy
  • Foldable Saddle: KNUS
  • Noise: ≤ 62 dB(A)
  • Front fork: 20 inch 6061 Al-Alloy
  • Pedal: Foldable Pedals