Qualisports Dolphin QSEB03 350W 36V Folding Electric Bike

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The Qualiports Dolphin Folding Electric Bike comes with a stronger 350W 36V rear-hub mounted motor so it is powerful enough to handle your daily commute. The battery is conveniently hidden in the sliding seat post.

This commuter bicycle easily folds down for convenient transportation. You can even walk it when it is folded, allowing you to navigate busy city streets and public transportation. Take this versatile sleek electric bicycle with you on your next trip!


Qualisports folding structure makes the folding size only 830*480*700mm, weights only 47 lbs. 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 is 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 over charging, over heating, stabilizes and regulates 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-fuction 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, back lights, 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.


The Dolphin has been crafted and tested under our strict guidelines and procedures. The frame is made of 6061 Aluminum which is an industry standard known for its lightweight and strength, allowing our bikes to appeal and support heavier heavier cyclists.

    Qualisports Folding Electric Bike Authorized Dealer

    QUALISPORTS Dolphin QSEB03 350W 36V Folding Electric Bike Specifications

    Product Name: Dolphin
    Model Name:


    Size: 62.9*23.3*44.1 inch
    Folding Size: 32.6*18.9*27.5 inch
    Wheelbase 43.5 inch
    Net weight 47 lbs
    Range 62.5Miles(PAS)
    Max. Load: 300lbs
    Max. Speed: 20 Miles / Hour
    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±10 r/min
    Rated Voltage: 36V
    Max Torque: 40 N.m
    Overcurrent Protection: 15±1A
    Low-voltage Protection 30±1V
    Kwh: ≤ 1.2Kw.h
    Modes: 5 Levels + Throttle + Walk Assist + Cruise
    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: 20x2.35"
    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 Ebike Lever
    Pedal Foldable Pedals
    Saddle: KNUS


    QUALISPORTS Dolphin QSEB03 350W 36V Folding Electric Bike Owner's Manual


    Unboxing Video

    QualiSports comes with a One year warranty against manufacturing defects and workmanship. Please click on the link for the QualiSports warranty details.

    Customer Reviews

    Based on 2 reviews
    Brent Jackson

    Very good bike. The motor is smooth and very pleasant, it helps a lot without being too much. The wheels and tires are not small at all and make the ride more trustable. Battery life is great and the bikes are very well built which gives you comfort.

    Julie Sherman

    This bike is absolutely stunning, It was made very well and the front and tail lights very helpful. The bike is super fast and very comfortable. This is the most fun I have ever had riding an e-bike.