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Qualisports DOLPHIN Foldable Electric Bike, 48V/10.5Ah, 500W


Regular price
Price: $1,499.00
Regular price
List Price: $1,799.00
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Price: $1,499.00
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Estimated Arrival: Between Jul 22 and Jul 27. United States

Free Shipping in the U.S. (48 Contiguous States).


Qualisports bikes are designed to to enhance your daily commute and are constructed with durable components. They have a PAS (Pedal Assist System) that enhances the biking experience by allowing you to adjust and control the speed. You can also give yourself an extra boost with a press of the ergonomic lever. 

You'll find the Dolphin is the epitome of versatility and value. With its compact wheels and folding frame that can be stored in seconds, it's perfect for navigating through tight spaces, riding on the boardwalk, or taking with you on a camping trip.

Battery Type: Samsung Lithium-ion Battery
Battery Capacity: Dual Battery System.  Seat post battery 48V 10.5Ah; + Tube battery: 48V 7Ah (Optional)
Charging Time: 3-4Hrs/Dolphin; 4-4.5Hrs/Dolphin Plus
Motor Brand: 500W Qualisports USA Custom Manufactured
Motor Torque: 80 Newton meters
Max. Speed: 20 mph
Display Brand: KT-7 LCD Multifunctional Display with USB Charging Port
Drive Mode: Cadence Sensing Pedal Assist/Trigger Throttle (12 Magnet Sealed Sensor)-Normal Biking-Cruise-Walk Assist
Suggested Use: Urban, Travel, Commuting, RV, Aircraft, and Boats
Size: 63.50'' x 25'' x 44.09''
Folded Size: 33" x 14.5" x 28.5"
Net Weight: 51 lbs
Max. Load: 300 lbs
Frame Type: Mid-Step, Folding
Saddle: KNUS, Active
Seat Post: Custom, 57mm, Alloy (Contains the Battery)
Brake Details: Custom 2 piston Hydraulic Disc Brakes with power cutoff
Gearing Details: 7 Speed 1x7 Shimano Tourney Derailleur, MF-TZ500-7 14-28 Tooth Cassette
Cranks: Prowheel Forged Alloy, 170mm Length, 52 Tooth Chainring with Plastic Guard
Tire Brand: INNOVA, 20" x 2.30"
Bike Features


One 48V 10.5Ah lithium-ion battery, one 7Ah optional lithium battery, charging time of 4-6 hours, and a range of roughly 80+ miles.

The new Dolphin and Dolphin Plus have the same frame design, allowing it to be upgraded to a dual-battery version by purchasing a dual-battery kit.


Climb hills and traverse crossroads smoothly and efficiently, powered by the custom 500W motor from Qualisports USA, which is designed in-house to help you go steeper at a lower speed.


With fluid in the master cylinder, hydraulic brakes have a much more efficient braking mechanism to force the brake pads together when the lever is pushed. 

Multiplying the amount of effort put into the lever makes it easier to brake.


The LCD display lets you easily see some parameters like battery capacity, current speed, pedal assist level, and travel distance.

It has a USB port for phone charging.

Size and Fit
Folded Size: 33*14.5*28.5 in

1. Max Handlebar Height:39.76 in
2. Min Handlebar Height:32.48 in
3. Standover Height:21.50 in
4. Max Saddle Height:39.76 in
5. Min Saddle Height:32.00 in
6. Wheelbase:42.25 in
7. Reach: 22.50 in
8. Width: 25 in

What's in the box

Front and rear fender X 1
Kickstand X 1
Battery and charger X 1
Thumb throttle X 1
Front and rear light X 1
Tool bag X 1


Order Confirmation:

As soon as you place your order, you will receive an email confirming your order.  This means that we have received your order in our system and pre-authorized your credit card for the purchase.  As soon as we receive your order, we automatically reach out to our suppliers to confirm that your order is in stock and available for immediate shipment.  If your items are on backorder, or unavailable, we will void the pre-authorization and reach out to you via email. 

Order Shipment:

If your order is in stock and we process the charges to your credit card, it will ship within five business days from the date of your purchase.  We will send you tracking information within 24 hours of your order leaving the warehouse to the email address or phone number you provided when checking out.  If you do not receive tracking information from us within six business days, feel free to follow up with us at

Cancelations, Damages, and Refunds:

If for any reason you need to cancel your order, please contact us as soon as possible at  We cannot guarantee that we will be able to stop shipment before your bike leaves the warehouse. 

Please refer to our Manufacturer's Warranty and Return Policies page to learn how cancelations, damages, and refunds will be handled by the manufacturer of your particular product.  In all cases, the manufacturer's policy supersedes our own policies where there are differences. 

Warranty & Returns

We want you to be completely happy with your purchase.  

​If you are unsatisfied in any way with your order, please contact us as soon as possible at and we will do our best to ensure your satisfaction.

If you need to return your order, please refer to our Manufacturer Warranty & Return Policies page for details on the specific brand's policies for the product you have purchased. 

Please note that each brand carries its own policies.  If there are any differences between general Return Policy and that of the manufacturer, you should follow the manufacturer's Return Policy for the product you purchased. 

Customer Reviews

Based on 4 reviews
Robert Noordermeer

A Qualisports Dolphin honest review after 6 months and 500 miles. Here are few of my stats to give you a perspective on my riding. My average trip per ride on the Dolphin is 4 miles. My longest trip was 24.34 miles. The average speed is 11.6mph. I use the Dolphin as a car replacement so I mostly keep it in level five pedal assist and rarely use the throttle. I average about 25 to 30 miles on a charge and it takes around 6 hours to fully charge. The ride is good but bumpy because of the small wheelbase. The things I like about the Dolphin are that it is compact, solid, very utilitarian, has a locking seat clamp, has the option to add baskets and racks for storage, smooth acceleration, and great customer service. Some of the things I do not like about the Dolphin are the headlight (it is okay for being seen but not good to see), the fenders (I like that they are metal but the rear one bounces around and can rattle a bit), the brake calipers (they are not the best and can feel a little iffy when stopping. I replaced the rear caliper with a Shimano after the cable clamp stripped out and it has been much better). Over all I give the Dolphin a 5 star review. It is a fun bike to ride. The frame is well built with nice welds. The rack and accessories are well made. In general mostly good parts for the price range. And finally customer service is responsive and accommodating.

Ronald Gosbin

Great bike! This is our second Dolphin. Battery life is great and the bikes are very well built. Best bike for the money.

Mustafa Demiray

This model has the best range and I can say it lives up to it. Definitely a good value for the money. The only downside for me is a lack of suspension. Overall, a good entry level bike that is worth the price.


The bike rack for my Dolphin is great! perfect fit.