DOLPHIN STD/PLUS

$1,499.00

Color: Navy Blue
Style

Ship within 48 hours (Business Day) -- Except pre-order products

Dolphin STD/PLUS folding ebike
Front and rear fenders
Front and rear light
Battery and charger
Tool bag
Manual
Frame Battery Keys(Dual-Battery Version)

Medical Providers, Military, First Responders, Students, and Teachers receive 5% off.
--Click Verify Link

weight-icon

WEIGHT

45 lbs

TOP SPEED

20 mph

MOTOR

500 w

range icon

MAX RANGE

60/80 miles

Qualisports Dolphin Folding Elecric bike Review video

Long Range Folding Electric Bike for City & Beyond – Dolphin

Extended Battery, Powerful Motor & Foldable Design for Commute and Weekend Rides

Built for Longer Rides

Enjoy extended rides without worrying about battery life.

Perfect for weekend adventures and longer commutes

Ride comfortably with a stable and ergonomic design

Why Dolphin?

Dolphin is designed for riders who want more — more distance, more comfort, and more freedom.

It’s the perfect balance between performance and everyday usability.

Family with a dog using an dual-battery electric bike and trailer in a park

Dual-battery Design

Go further without compromise. The dual-battery system extends your riding range, giving you the freedom to travel longer distances with fewer stops. Perfect for daily commutes or weekend adventures, it keeps you powered all day.

Person riding a blue portable electric bike on a road with trees and a cabin in the background

750W Peak

Powerful Motor

Take on city streets and steep hills with confidence. The Dolphin’s powerful motor delivers smooth, consistent acceleration, making longer rides effortless. Whether commuting or exploring, enjoy a responsive ride that keeps up with your pace.

Man holding a folded blue portable electric bicycle next to an RV in a campground

Quick-Fold

Fold and go in seconds. The Dolphin’s quick-fold design makes it easy to store, carry, and transport wherever you need. Ideal for urban living, it fits seamlessly into your lifestyle—whether at home, in the office, or on the move.

Designed for Comfort

Enjoy a smoother ride with better posture, enhanced stability, and reduced fatigue. Perfect for riders who want a more relaxed and enjoyable cycling experience.

500W folding electric bike brushless motor with Qualisports logo

500W Motor

Velo saddle on the seatpost battery for folding electric bike

Thickened seat

Seatpost battery with height identifier

Adjustable seat

DOLPHIN E-BIke chain guard

Derailleur Guard

E-bike frame charge port

Convenient charging

electric bike Display with charge port

USB port

Riders Are Talking

See what top e-bike reviewers have to say about the Dolphin.

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❯
Electrek Review
▶
Electrek.co

Qualisports Dolphin Review: A compact folder with surprising power.

Ebike Escape Review
▶
Ebike Escape

How Much Battery Can You Pack Into That Ebike? Dolphin Plus Review!

Electrified Reviews
▶
Electrified Reviews

Qualisports Dolphin Plus Review: 500W Motor & Dual Battery Test.

Which Qualisports Bike is Right for Me?

Qualisports Volador folding e-bike with white color
VOLADOR

$1,199.00

Blue Qualisports Dolphin Folding Electric Bike
DOLPHIN STD/PLUS

From $1,499.00

Qualisports_nemo_folding_ebike-gray
NEMO

$999.00

Folded size

32.68" * 15.75" * 26.38"

Weight

41.2 lbs (18.7kg)

Motor

350W (500W Peak)

Max Speed

20Mph

Brake

Mechanical

View detail

Folded size

33.00" * 14.50" * 28.50"

Weight

STD--51.5 lbs (23.5kg)

Motor

500W (750W Peak)

Max Speed

20Mph

Brake

Hydraulic 👍

View detail

Folded size

29.30" * 15.75" * 25.20"

Weight

34.8 lbs (15.8kg)

Motor

250W (400W Peak)

Max Speed

16Mph

Brake

Mechanical

View detail
Compare More Specifications Compare More Specifications

Dolphin Specifications

Power Meets Versatility. Designed for the Long Haul.

Electronic System
Motor500W (750W Peak) Rated Geared Hub Motor
Battery48V 10.5Ah / + 48V 7Ah (Plus Version)
DisplayLCD-7 with USB Port
ThrottleThumb Throttle
(Left Side)
Assist TypeCadence 12-magnet Sensor
Range45 - 70+ Miles
Top Speed20 Mph
Charger54V 3A Fast Charger
Free AccessoriesF & R Fenders,
F & R Lights included
Bicycle Components
Frame6061 Aluminum Alloy Folding Frame
Tires20" x 2.3"
BrakesHydraulic Disc Brakes
DerailleurShimano 7-Speed
FreewheelShimano MF-TZ500 14-28T Thread
ForkRigid Aluminum Alloy
CranksetProwheel 52T 165mm w/ Plastic Guard
SaddleErgonomic Comfort Saddle
Geometry & Dimensions
Unfolded Size63" x 23.6" x 44.5"
Folded Size33" x 14.5" x 28.5"
Weight (w/ Battery)51.5 lbs (STD)
/ 55.8 lbs (Plus)
Max Payload300 lbs
Recommended Height5'2" - 6'2"
Wheelbase41.73"

Real Rider Reviews

The Dolphin+ is incredibly solid and well built. Easily one of the most reliable fat tire folding electric bikes I’ve owned.

Great quality overall. The ride is stable and comfortable, especially on rough roads. Perfect all-terrain folding e-bike.

I use it for daily errands and weekend rides. It’s a folding electric bike with fat tires that handles everything.

Battery life and ride comfort are excellent. Slightly heavier, but that’s expected for a fat tire e-bike with this power.

Super stable and confidence-inspiring. This all-terrain e-bike performs great on gravel, pavement, and even light trails.

I upgraded a few parts, but overall this is a durable folding electric bike that holds up really well over time.

If you want comfort over speed, this is it. The fat tire design makes every ride smoother, especially in the city.

Great value for the price. A powerful folding e-bike that feels sturdy and reliable for everyday riding.

FAQ

Dolphin folding electric bike frames with UL certification marks

Yes, Dolphin is certified to UL 2849 and UL 2271. The unit features a certification sticker and a QR code.

Once your order is received, a confirmation will be sent by email or text, it takes us 48 hours to prepare your order, and you will be notified as soon as it ships.

Orders placed on weekend will be arranged on next business day.

Pickup available at Ontario Warehouse and usually ready in 24 hours.(Buniness Day)

When you receive the pickup email or text message, please go to the warehouse during the time slot indicated in the message. Bring your order information and a valid ID to complete the pickup.

1. Plan your trip and duration of stay in advance, Qualisports supports shipping schedule based on your trip plan (extended shipping time is supported)

West 1-3 days; Central 3-5 days; East 5-7 days

2. Find a Qualisports dealer or FedEx site at your destination and we will set up a pickup location based on your plans. (Address changes supported for extended shipments)

--Add your desired time in the notes when ordering or contact us directly!
Email: Support@Qualisports.us
Text: +1 (909) 268 7487

Notice: Three charging methods

1. Seat post battery charging port charging (only for seat post battery charging)

2. Frame battery charging port charging (only for frame battery charging)

3. Frame bottom charging port charging (can charge two batteries, charging order: first frame battery then seat post battery)

Distance differs on the terrain, weight of the cyclist, and the power mode you are using (pedal only, full Throttle, or pedal assist).

For a Single-battery Dolphin: The range is about 25 to 60 miles on a single charge using primarily electric power.
For a Dual-Battery Dolphin: The range is about 40 to 80 miles on a single charge using primarily electric power.
If you use the PAS, mileage can increase.  Some riders can achieve over 60/80miles when cycling in pedal-assist mode.

You may refer to this video: https://youtu.be/iy6plC161mU

95% of the bikes are pre-assembled, with detailed installation videos for the front and rear fenders.